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Old Yesterday, 04:07   #1  |  Link
johnvick
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Hardware HEVC encoding

Hi all,

I have a GeForce 1660 Turing card and Ryzen 2400G CPU. I use Staxrip to encode 1080 TV rips using NVENC HEVC 10 bit and usually opt for 2 channel audio. I get good results with file sizes of around 800-1000 MB per hour of TV. Encoding runs at 166 fps with the GPU running at 100% and the CPU about 60% on 8 threads.

I am thinking of upgrading the CPU to a Ryzen 3600 or 3700x (probably the former as it is well priced just now).

My question is, will I get much if any fps increase in encoding speed? Not crucial as 166 fps is quick anyway but any info to help my buying decision is welcome.

John
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Old Yesterday, 04:12   #2  |  Link
videoh
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It depends on whether you also decode in HW, and whether you have CPU intensive filtering in your scripts.
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Old Yesterday, 04:44   #3  |  Link
johnvick
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I'm not that sophisticated - I pretty much use Staxrip defaults or recommended settings. I use VBR HQ 10-bit and avisynth defaults otherwise haven't touched the more exotic settings.
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Old Yesterday, 06:23   #4  |  Link
RanmaCanada
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You probably won't see any appreciable gain as these are similar speeds that people are getting with a 2080Ti

FPS for SD channel.
for 720 divide by 2, for 1080 divide by 4

GPU DEC H264 H265 POSTPROCESSING
GTX 1070 2600 2600 1800 5000
GTX 1080 2600 5200 2600 10000
GTX 1080 TI2600 5200 2600 10000
RTX 2080 5800 1700 600 5800
RTX 2080 TI5800 1700 600 5800


https://devtalk.nvidia.com/default/t...c-in-turing-/2
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Old Yesterday, 23:04   #5  |  Link
johnvick
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Just installed Ryzen 3600 and as predected no change in fps with NVENC. Handbrake fps have more then doubled for 1080 10 bit HEVC software encoding.

Hope this info is useful to someone else and thanks for the help.

John
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Old Today, 03:39   #6  |  Link
osgZach
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Quote:
Originally Posted by johnvick View Post
Just installed Ryzen 3600 and as predected no change in fps with NVENC. Handbrake fps have more then doubled for 1080 10 bit HEVC software encoding.

Hope this info is useful to someone else and thanks for the help.

John
Well that's about what you would expect, seeing as you upgraded your CPU and not your GPU. NVENC is executed on the GPU through a dedicated chip, your CPU wouldn't really change any performance unless it had previously been unable to supply the GPU with frames fast enough to keep up with its ability to process them.
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Old Today, 05:51   #7  |  Link
RanmaCanada
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Quote:
Originally Posted by osgZach View Post
Well that's about what you would expect, seeing as you upgraded your CPU and not your GPU. NVENC is executed on the GPU through a dedicated chip, your CPU wouldn't really change any performance unless it had previously been unable to supply the GPU with frames fast enough to keep up with its ability to process them.
And that is what OP was wondering. They were wondering if their "underpowered" CPU was limiting their performance. By upgrading to something considerably faster, they've proven that the CPU is not really the limit when it comes to NVENC. The only way speeds will increase is with new ASICS. The current gen of ASICS on Turing brought visual performance increases at the cost of speed. Next gen might increase both, or just speed, pending on what Nvidia wants to do. Hardware AV1 would be great :P
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