What's the advantage of cce 2.5 on AMD systems?

[elwoodps]

Hi All,

I've been lurking here for quite a while and it's really been interesting reading. This is my first thread and I don't have any complaints or problems; curiosity has just gotten the best of me.

A number of posters on this forum have mentioned that they use DVD-RB with cce 2.5 on amd CPUs and a later version on pentiums. Others have said that cce 2.5 is faster on AMDs than the current version.

I'm currently running the latest version of DVD-RB Pro with cce basic 2.7 something on a dual Athlon system and I'd like to know:

What actually is/are the advantage(s) of cce 2.5 over later versions on AMD systems, and how great is this/are these advantage(s)?

Thanks for taking the time to read my question and any info you can share on the topic will be most appreciated.

Elwood

[writersblock29]

@elwoodps

I'm not really sure if there's a true advantage combining AMD with CCE 2.5. I've always done it because not only do I favor AMD processors over Pentium, I shelled out major money for CCE 2.5 for professional video work. I've heard others post that 2.5 runs faster on AMD than Pentiums... but I really can't touch that since I've never tried running CCE on Intel. I know that I average speeds with CCE 2.5 of around 2.7-2.8X real time with an Athlon 64 3200+, without overclocking (depending on filters used in Avisynth). Since the architecture of an AMD 64 is hard to match with a Pentium, it'd be tough to do a neck-and-neck comparison.

[jdobbs]

It's definitely a fact. On my AMD Athlon XP 3200+ I get about speeds of 2.9x using v2.50 and around 2.5x on v2.70. I believe the newer CCE versions use extended instructions that aren't available on the AMD XP -- that's why the new versions run faster than v2.50 on Athlon64 and newer Intel chips.

[Boulder]

Yes, the later versions are more Intel-friendly. At least 2.70 uses SSE2, don't know if AMD's SSE2-capable processors benefit much from that though. Maybe Cinema Craft used Intel's compiler :D

[elwoodps]

Thanks for all the information guys.

@jdobbs: Special thanks for quantifying the difference for me. The ~%15 speed gain you're seeing with 2.5 vs 2.70 is certainly a significant advantage, but probably not great enough to justify my hunting for the older version. Also MANY THANKS for your great program.

Elwood