Advanced Benchmark v.2 for H264, H265, AV1 and H266 - Page 5

Asmodian · 27th April 2025, 20:05

9950X3D
PBO enabled

32 Threads

Code:

|-----------------------------------------------------------------|-------------------------------------------------- 
| CPU                                                             |  Ryzen 9 9950X3D 16-Core Processor                            
|-----------------------------------------------------------------|-------------------------------------------------- 
| H264 - x264 - 1080p - HDR - Multipart encoding - 1611 frames    |  27.028 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H265 - x265 - 1080p - HDR - Multipart encoding - 1611 frames    |  35.195 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| AV1 - SVT-AV1 - 1080p - HDR  - Multipart encoding - 1611 frames |  41.492 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H266 - VVEnc - 1080p - HDR  - Multipart encoding - 1611 frames  |  68.491 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| Overall - 1080p - HDR  - ABR Ladder encoding - 1611 frames      |  195.762 s                
|-----------------------------------------------------------------|--------------------------------------------------

16 Threads (SMT Off)

Code:

|-----------------------------------------------------------------|-------------------------------------------------- 
| CPU                                                             |  Ryzen 9 9950X3D 16-Core Processor                            
|-----------------------------------------------------------------|-------------------------------------------------- 
| H264 - x264 - 1080p - HDR - Multipart encoding - 1611 frames    |  33.098 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H265 - x265 - 1080p - HDR - Multipart encoding - 1611 frames    |  41.913 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| AV1 - SVT-AV1 - 1080p - HDR  - Multipart encoding - 1611 frames |  49.684 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H266 - VVEnc - 1080p - HDR  - Multipart encoding - 1611 frames  |  77.733 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| Overall - 1080p - HDR  - ABR Ladder encoding - 1611 frames      |  197.154 s                
|-----------------------------------------------------------------|--------------------------------------------------

benwaggoner · 2nd May 2025, 01:35

Quote:

Originally Posted by GeoffreyA

I think the cores and threads are just not being fully saturated.

Testing 2160p 10-bit would be a broader stress test these days. A lot more for cores to do on a single encode with modern encoders. x265 and SVT-AV1 are particularly good at splitting a single encode across multiple threads at higher resolutions, with frame-threading and intra-frame-threading (WPP and columns)

huhn · 2nd May 2025, 11:29

eco 65 watt:

Code:

|-----------------------------------------------------------------|-------------------------------------------------- 
| CPU                                                             | AMD Ryzen 7 9800X3D 8-Core Processor                             
|-----------------------------------------------------------------|-------------------------------------------------- 
| H264 - x264 - 1080p - HDR - Multipart encoding - 1611 frames    |  64.568 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H265 - x265 - 1080p - HDR - Multipart encoding - 1611 frames    |  82.549 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| AV1 - SVT-AV1 - 1080p - HDR  - Multipart encoding - 1611 frames |  93.218 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H266 - VVEnc - 1080p - HDR  - Multipart encoding - 1611 frames  |  152.390 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| Overall - 1080p - HDR  - ABR Ladder encoding - 1611 frames      |  384.597 s                
|-----------------------------------------------------------------|--------------------------------------------------

jpsdr · 14th June 2025, 13:02

CPU: 7975WX (AVX512 & HT enabled in the BIOS) => 32 physical cores (64 logicals).
Motherboard: ASUS Pro WS WRX90E-SAGE SE
Memory CORSAIR CMA128GX5M8B5600C40(Ver 5.43.01) 8x 16GB

I've made a Windows 10/Windows 11 dual boot.
PC is totaly offline, a lot of services disabled, so it's doing "almost" nothing else and so there is "almost" no waste of time.

Windows 10

Code:

|-----------------------------------------------------------------|-------------------------------------------------- 
| CPU                                                             | AMD Ryzen Threadripper PRO 7975WX 32-Cores                       
|-----------------------------------------------------------------|-------------------------------------------------- 
| H264 - x264 - 1080p - HDR - Multipart encoding - 1611 frames    |  21.721 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H265 - x265 - 1080p - HDR - Multipart encoding - 1611 frames    |  28.248 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| AV1 - SVT-AV1 - 1080p - HDR  - Multipart encoding - 1611 frames |  32.781 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H266 - VVEnc - 1080p - HDR  - Multipart encoding - 1611 frames  |  65.163 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| Overall - 1080p - HDR  - ABR Ladder encoding - 1611 frames      |  199.641 s                
|-----------------------------------------------------------------|--------------------------------------------------

Windows 11

Code:

|-----------------------------------------------------------------|-------------------------------------------------- 
| CPU                                                             | AMD Ryzen Threadripper PRO 7975WX 32-Cores                       
|-----------------------------------------------------------------|-------------------------------------------------- 
| H264 - x264 - 1080p - HDR - Multipart encoding - 1611 frames    |  23.230 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H265 - x265 - 1080p - HDR - Multipart encoding - 1611 frames    |  33.054 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| AV1 - SVT-AV1 - 1080p - HDR  - Multipart encoding - 1611 frames |  35.382 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H266 - VVEnc - 1080p - HDR  - Multipart encoding - 1611 frames  |  95.966 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| Overall - 1080p - HDR  - ABR Ladder encoding - 1611 frames      |  291.563 s                
|-----------------------------------------------------------------|--------------------------------------------------

Emulgator · 15th June 2025, 21:03

Yee-ha !

benwaggoner · 19th June 2025, 18:11

I'm surprised that these latest test don't show bigger differences in encoding speed; SVT-AV1 should be at least several times slower than x264. Perhaps it's being Amdahl''s Law'ed by a read or preprocessing operation?

Going straight from a .y4m or .yuv file on SSD storage is generally the cleanest way to test just encoder performance.

Z2697 · 20th June 2025, 10:32

Quote:

Originally Posted by benwaggoner

I'm surprised that these latest test don't show bigger differences in encoding speed; SVT-AV1 should be at least several times slower than x264. Perhaps it's being Amdahl''s Law'ed by a read or preprocessing operation?

Going straight from a .y4m or .yuv file on SSD storage is generally the cleanest way to test just encoder performance.

That's gonna depend on the presets and other settings.
I didn't read the entire script word by word, but from a glance it uses veryslow for x264 and "4" for SVT-AV1.

GeoffreyA · 20th June 2025, 11:52

Quote:

Originally Posted by benwaggoner

I'm surprised that these latest test don't show bigger differences in encoding speed; SVT-AV1 should be at least several times slower than x264. Perhaps it's being Amdahl''s Law'ed by a read or preprocessing operation?

Going straight from a .y4m or .yuv file on SSD storage is generally the cleanest way to test just encoder performance.

Above the slower presets, SVT-AV1 gets surprisingly fast, reaching x264's speed. On slower presets, it starts returning to that sluggish libaom territory.

EDIT: Very unscientifically, using default settings for a short 1080p clip, SVT-AV1-PSY (preset 8) ends with 56 fps and x264 (medium) with 42 fps. This is on a 6-core CPU.

Asmodian · 23rd June 2025, 18:05

Quote:

Originally Posted by jpsdr

CPU: 7975WX (AVX512 & HT enabled in the BIOS) => 32 physical cores (64 logicals).

I think there are scheduling issues with your Windows 11 install. Do you have NUMA enabled? Are AMD's drivers installed?

Your Windows 11 result for Overall is significantly worse than my result with only 16 cores and two CCDs (also in Windows 11), while the other tests are quite a bit faster.

jpsdr · 23rd June 2025, 20:03

How do i check if NUMA is enabled ? I think so, but don't remember specificaly in my BIOS investigation.
About AMD Drivers, i installed what there was on ASUS web site for my motherboard : AMD_Chipset_Driver_V5.06.13.252_WIN10_WIN11_64-bit.
Is it what you were thinking about ?

Edit:
This was what ASUS provided.
I found on AMD website AMD_Chipset_Software_6.10.17.152, i'll try to install there and re-check, but it will have to wait a few days, i'm running an encode...

Edit2:
It took me a little time, but i've finaly found the proper AMD link to up to date drivers for my chipset (amd_chipset_software_7.06.02.123). I don't know if it will have a significant effect, but indeed drivers provided by ASUS are a little outdated.
Also, x265 logs enumerate NUMA, i don't know if it meens or not that NUMA are enabled.

benwaggoner · 24th June 2025, 17:45

Quote:

Originally Posted by Z2697

That's gonna depend on the presets and other settings.
I didn't read the entire script word by word, but from a glance it uses veryslow for x264 and "4" for SVT-AV1.

Ah, the eternal philosophical question about what are the "fair" settings for an apples-to-kumquants comparison across different codecs.

Equivalent quality?

Equivalent performance on a particular reference platform?

Convex hull on BD-RATE for the best available metric?

"Standard" use (good luck defining that).

RanmaCanada · 21st July 2025, 07:24

Code:

|-----------------------------------------------------------------|-------------------------------------------------- 
| CPU                                                             | Intel(R) Core(TM) Ultra 7 265T                  
|-----------------------------------------------------------------|-------------------------------------------------- 
| H264 - x264 - 1080p - HDR - Multipart encoding - 1611 frames    |  94.768 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H265 - x265 - 1080p - HDR - Multipart encoding - 1611 frames    |  134.187 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| AV1 - SVT-AV1 - 1080p - HDR  - Multipart encoding - 1611 frames |  157.324 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H266 - VVEnc - 1080p - HDR  - Multipart encoding - 1611 frames  |  230.701 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| Overall - 1080p - HDR  - ABR Ladder encoding - 1611 frames      |  602.443 s                
|-----------------------------------------------------------------|--------------------------------------------------

I don't think it understands how to use this processor..

And my new build that I finished today. Using a NH-D15S to keep it cool. (at peak 95C and 100% stock bios settings so 200w max)

Code:

|-----------------------------------------------------------------|-------------------------------------------------- 
| CPU                                                             |  Ryzen 9 9950X 16-Core Processor                              
|-----------------------------------------------------------------|-------------------------------------------------- 
| H264 - x264 - 1080p - HDR - Multipart encoding - 1611 frames    |  38.902 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H265 - x265 - 1080p - HDR - Multipart encoding - 1611 frames    |  39.921 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| AV1 - SVT-AV1 - 1080p - HDR  - Multipart encoding - 1611 frames |  50.546 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H266 - VVEnc - 1080p - HDR  - Multipart encoding - 1611 frames  |  78.146 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| Overall - 1080p - HDR  - ABR Ladder encoding - 1611 frames      |  218.687 s                
|-----------------------------------------------------------------|--------------------------------------------------

Sagittaire · 10th August 2025, 12:00

Quote:

Originally Posted by GeoffreyA

I think the cores and threads are just not being fully saturated.

Well my benchmark can easely saturate 64 thread. And at worst if you have not saturation, you lose simply SMT performance (~25% up) when you compare at 16C/32T CPU.

in fact the explanation is that Ryzen Threadripper 3970X is Zen2 architechture without AVX2 and AVX512 SMID.

If you compare 3900x (zen 2 12C/24T) and 9900X (zen 5 12C/24T) in stockfish benchmark (full saturation up to 1024 thread, AVX512 optimized benchmark):

3900X: 12.53 MN/s
9900X: 23.61 MN/s (+88%)

9950X (16C/32T) could be simply at same performance level that 3970X (32C/64T) in full satured CPU thread scenario at full power level ...

Sagittaire · 10th August 2025, 12:35

Possible to make this bench at stock 120W TDP?

The difference between 65W vs 120W is huge in stockfisch benchmark:

9700x 65W: 14.79 MN/s
9800x3D 120W: 17.29 MN/s (+17%)

Quote:

Originally Posted by huhn

eco 65 watt:

Code:

|-----------------------------------------------------------------|-------------------------------------------------- 
| CPU                                                             | AMD Ryzen 7 9800X3D 8-Core Processor                             
|-----------------------------------------------------------------|-------------------------------------------------- 
| H264 - x264 - 1080p - HDR - Multipart encoding - 1611 frames    |  64.568 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H265 - x265 - 1080p - HDR - Multipart encoding - 1611 frames    |  82.549 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| AV1 - SVT-AV1 - 1080p - HDR  - Multipart encoding - 1611 frames |  93.218 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H266 - VVEnc - 1080p - HDR  - Multipart encoding - 1611 frames  |  152.390 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| Overall - 1080p - HDR  - ABR Ladder encoding - 1611 frames      |  384.597 s                
|-----------------------------------------------------------------|--------------------------------------------------

Sagittaire · 10th August 2025, 12:40

Intel(R) Core(TM) Ultra 7 265T is 35W TDP CPU. At this power, you have really limited performance.

Intel® Core™ Ultra 7 265K at full power is 125W TDP CPU.

Quote:

Originally Posted by RanmaCanada

Code:

|-----------------------------------------------------------------|-------------------------------------------------- 
| CPU                                                             | Intel(R) Core(TM) Ultra 7 265T                  
|-----------------------------------------------------------------|-------------------------------------------------- 
| H264 - x264 - 1080p - HDR - Multipart encoding - 1611 frames    |  94.768 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H265 - x265 - 1080p - HDR - Multipart encoding - 1611 frames    |  134.187 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| AV1 - SVT-AV1 - 1080p - HDR  - Multipart encoding - 1611 frames |  157.324 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H266 - VVEnc - 1080p - HDR  - Multipart encoding - 1611 frames  |  230.701 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| Overall - 1080p - HDR  - ABR Ladder encoding - 1611 frames      |  602.443 s                
|-----------------------------------------------------------------|--------------------------------------------------

I don't think it understands how to use this processor..
[/CODE]

Sagittaire · 10th August 2025, 13:19

Your 7975WX is a monster.

I can write 8 encoding part version of this bench to fully saturate 64 threads if you want.

Quote:

Originally Posted by jpsdr

CPU: 7975WX (AVX512 & HT enabled in the BIOS) => 32 physical cores (64 logicals).
Motherboard: ASUS Pro WS WRX90E-SAGE SE
Memory CORSAIR CMA128GX5M8B5600C40(Ver 5.43.01) 8x 16GB

I've made a Windows 10/Windows 11 dual boot.
PC is totaly offline, a lot of services disabled, so it's doing "almost" nothing else and so there is "almost" no waste of time.

Windows 10

Code:

|-----------------------------------------------------------------|-------------------------------------------------- 
| CPU                                                             | AMD Ryzen Threadripper PRO 7975WX 32-Cores                       
|-----------------------------------------------------------------|-------------------------------------------------- 
| H264 - x264 - 1080p - HDR - Multipart encoding - 1611 frames    |  21.721 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H265 - x265 - 1080p - HDR - Multipart encoding - 1611 frames    |  28.248 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| AV1 - SVT-AV1 - 1080p - HDR  - Multipart encoding - 1611 frames |  32.781 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H266 - VVEnc - 1080p - HDR  - Multipart encoding - 1611 frames  |  65.163 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| Overall - 1080p - HDR  - ABR Ladder encoding - 1611 frames      |  199.641 s                
|-----------------------------------------------------------------|--------------------------------------------------

Windows 11

Code:

|-----------------------------------------------------------------|-------------------------------------------------- 
| CPU                                                             | AMD Ryzen Threadripper PRO 7975WX 32-Cores                       
|-----------------------------------------------------------------|-------------------------------------------------- 
| H264 - x264 - 1080p - HDR - Multipart encoding - 1611 frames    |  23.230 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H265 - x265 - 1080p - HDR - Multipart encoding - 1611 frames    |  33.054 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| AV1 - SVT-AV1 - 1080p - HDR  - Multipart encoding - 1611 frames |  35.382 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H266 - VVEnc - 1080p - HDR  - Multipart encoding - 1611 frames  |  95.966 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| Overall - 1080p - HDR  - ABR Ladder encoding - 1611 frames      |  291.563 s                
|-----------------------------------------------------------------|--------------------------------------------------

jpsdr · 11th August 2025, 17:42

Quote:

Originally Posted by Sagittaire

Your 7975WX is a monster.

Well... As by chance i had the money for, i build it to make 4k encodes.
On my other dedicated PC video, it takes 9 days for me to encode an 1h45 movie, now it takes 3 days to encode in parallel two 1h45 movies.

Honestly, i'm done with benchmark now...
There still this strange speed difference between Windows10/11, don't know why, but don't care, i'm using Windows 10 for now.

Sagittaire · 11th August 2025, 18:30

Quote:

Originally Posted by jpsdr

Well... As by chance i had the money for, i build it to make 4k encodes.
On my other dedicated PC video, it takes 9 days for me to encode an 1h45 movie, now it takes 3 days to encode in parallel two 1h45 movies.

Honestly, i'm done with benchmark now...
There still this strange speed difference between Windows10/11, don't know why, but don't care, i'm using Windows 10 for now.

well even with 2 parallel 4K movies, you can't saturate 64 threads (one 4K movie can't saturate CPU like 9950X with 16C/32T). Certainely that 9950X with PBO will produce better speed that your 7975WX to make that.

I can write for you profile to saturate at 100% your CPU with only one movie (4 or 8 multipart 4K can make that I think). I think that time will reduce at 1 day for 1h45 movie encoding.

Sagittaire · 16th August 2025, 15:40

Quote:

Originally Posted by jpsdr

How do i check if NUMA is enabled ? I think so, but don't remember specificaly in my BIOS investigation.
About AMD Drivers, i installed what there was on ASUS web site for my motherboard : AMD_Chipset_Driver_V5.06.13.252_WIN10_WIN11_64-bit.
Is it what you were thinking about ?

Edit:
This was what ASUS provided.
I found on AMD website AMD_Chipset_Software_6.10.17.152, i'll try to install there and re-check, but it will have to wait a few days, i'm running an encode...

Edit2:
It took me a little time, but i've finaly found the proper AMD link to up to date drivers for my chipset (amd_chipset_software_7.06.02.123). I don't know if it will have a significant effect, but indeed drivers provided by ASUS are a little outdated.
Also, x265 logs enumerate NUMA, i don't know if it meens or not that NUMA are enabled.

Well I have recently speed problem in windows 11 24H2 certainely with default setting in new update. All external executable like ffmpeg.exe, x264.exe or x265.exe make now CLI execution at low priority by default. And low priority don't use CPU at 100% and don't saturate CPU speed at max possible power. It's really a problem because the encoding speed lowering is insane:

ffmpeg at default priority: CPU at 97% and 3.9 Ghz

Code:

|-----------------------------------------------------------------|-------------------------------------------------- 
| CPU                                                             |  Ryzen 9 7940HS w/ Radeon 780M Graphics                       
|-----------------------------------------------------------------|-------------------------------------------------- 
| H264 - x264 - 1080p - HDR - Multipart encoding - 1611 frames    |  98.035 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H265 - x265 - 1080p - HDR - Multipart encoding - 1611 frames    |  116.327 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| AV1 - SVT-AV1 - 1080p - HDR  - Multipart encoding - 1611 frames |  143.142 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H266 - VVEnc - 1080p - HDR  - Multipart encoding - 1611 frames  |  206.817 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| Overall - 1080p - HDR  - ABR Ladder encoding - 1611 frames      |  549.100 s                
|-----------------------------------------------------------------|--------------------------------------------------

ffmpeg at high priority: CPU at 100% and 4.55 Ghz

Code:

|-----------------------------------------------------------------|-------------------------------------------------- 
| CPU                                                             |  Ryzen 9 7940HS w/ Radeon 780M Graphics                       
|-----------------------------------------------------------------|-------------------------------------------------- 
| H264 - x264 - 1080p - HDR - Multipart encoding - 1611 frames    |  80.118 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H265 - x265 - 1080p - HDR - Multipart encoding - 1611 frames    |  96.132 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| AV1 - SVT-AV1 - 1080p - HDR  - Multipart encoding - 1611 frames |  116.769 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| H266 - VVEnc - 1080p - HDR  - Multipart encoding - 1611 frames  |  176.120 s                
|-----------------------------------------------------------------|-------------------------------------------------- 
| Overall - 1080p - HDR  - ABR Ladder encoding - 1611 frames      |  468.583 s                
|-----------------------------------------------------------------|--------------------------------------------------

jpsdr · 17th August 2025, 10:28

Quote:

Originally Posted by Sagittaire

Well I have recently speed problem in windows 11 24H2 certainely with default setting in new update. All external executable like ffmpeg.exe, x264.exe or x265.exe make now CLI execution at low priority by default.

Is there a setting somewhere to change ?

15th June 2025, 21:03	#85 \| Link
Emulgator Big Bit Savings Now ! Join Date: Feb 2007 Location: close to the wall Posts: 2,037	Yee-ha ! __________________ "To bypass shortcuts and find suffering...is called QUALity" (Die toten Augen von Friedrichshain) "Data reduction ? Yep, Sir. We're that issue working on. Synce invntoin uf lingöage..."

19th June 2025, 18:11	#86 \| Link
benwaggoner Moderator Join Date: Jan 2006 Location: Portland, OR Posts: 5,134	I'm surprised that these latest test don't show bigger differences in encoding speed; SVT-AV1 should be at least several times slower than x264. Perhaps it's being Amdahl''s Law'ed by a read or preprocessing operation? Going straight from a .y4m or .yuv file on SSD storage is generally the cleanest way to test just encoder performance. __________________ Ben Waggoner Principal Video Specialist, Amazon Prime Video My Compression Book

23rd June 2025, 20:03	#90 \| Link
jpsdr Registered User Join Date: Oct 2002 Location: France Posts: 2,638	How do i check if NUMA is enabled ? I think so, but don't remember specificaly in my BIOS investigation. About AMD Drivers, i installed what there was on ASUS web site for my motherboard : AMD_Chipset_Driver_V5.06.13.252_WIN10_WIN11_64-bit. Is it what you were thinking about ? Edit: This was what ASUS provided. I found on AMD website AMD_Chipset_Software_6.10.17.152, i'll try to install there and re-check, but it will have to wait a few days, i'm running an encode... Edit2: It took me a little time, but i've finaly found the proper AMD link to up to date drivers for my chipset (amd_chipset_software_7.06.02.123). I don't know if it will have a significant effect, but indeed drivers provided by ASUS are a little outdated. Also, x265 logs enumerate NUMA, i don't know if it meens or not that NUMA are enabled. __________________ My github. Last edited by jpsdr; 24th June 2025 at 08:49.

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