[RC5] stream vs cuda rates

bert bertodell at suddenlink.net
Sat Dec 12 20:47:19 EST 2009


Lars Sahlmann wrote:
> Hi Bert,
>
> it is true. ATI streamcabable cards are real monsters doing rc5 cracking.
> Nvidia cards suffered from a compiler error reducing their speed by 50%. This has been fixed with cuda >=2.2.
>
> I couldn't find an up-to-date benchmark list, but can provide you with some data.
>
> ATI 5870  ~1250 Mkeys/s @850MHz 1600 streamcores ~ 25K WUs/day 
> ATI 4850  ~514 Mkeys/s @665MHz 800 shaderuntis ~ 10K WUs/day
> NV  GT285 ~310 Mkeys/s @1436MHz (shaders) 240 cores ~ 6K WUs/day
>
> you won't gain any speed increase if ram is faster. 
>
> you can say roughly 100 Mkeys/s result in 2000 statunits a day.
>
>
>
>   
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Just looking back on this the ATI 5970 that's coming out has 3200 
streamcores,so it's possible it's double what the 5870 can do meaning 
maybe 50K WUs a day lol?


Bert


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