Core i7 xvid+x264 benchs?

[Penecho]

Hi, does anyone aleady have a Core i7 and can post some benchmarks on how it performs during the xvid and x264 encoding process!?


Cu


Penecho

[Sharktooth]

x264 devs had made some optimizations for core i7 and there is indeed a performance boost (IIRC it was about 20-25% at the same clock frequency compared to core2 CPUs - Dark Shikari or Akupenguin will surely have more accurate info)

[nurbs]

concerning x264:
Anandtech did a comparison (http://www.anandtech.com/cpuchipsets/intel/showdoc.aspx?i=3448&p=18) which shows the core i7 about 45 - 50% faster at the same clock speed (compared to a core2) on the second pass of a 2 pass encode, but they don't give settings. Also I don't know if the x264 version they used already had the optimisations for core i7. Dark Shikari posted a chart (http://i38.tinypic.com/16adzlj.png) on his blog (http://x264dev.multimedia.cx/) that shows by how much the different functions in x264 are accelerated, but that won't tell you much about the actual speed gain. For that read the comments in the corresponding blog post.

[Atak_Snajpera]

Anandtech did a comparison which shows the core i7 about 45 - 50% faster at the same clock speed (compared to a core2) on the second pass of a 2 pass encode, but they don't give settings.

you've got everything on website. Look!
Nehalem is happiest in 3D rendering applications, but video encoding is a close second place. Our first video encoding test is Tech ARP's x264 HD benchmark (http://www.techarp.com/showarticle.aspx?artno=520), which does a test encode of a 720p source file using the x264 codec. We're reporting results from the 0.59.819 version of x264.

[nurbs]

I read the article when it came out and now just linked to it and wrote text from memory. I completely forgot that they use that benchmark. Anyway since they are using rev819 and the nehalem optimisations were added after rev1000 it should be a little faster than what they show in the comparison.

OT: The Tech ARP site hardly ever works for me.

[Shinigami-Sama]

hit up #x264 @ freenode and ask dark yourself?