[RC5] Stream rate

bert bertodell at suddenlink.net
Wed Nov 11 19:01:07 EST 2009


Randall Hose wrote:
>
> Hi Bert,
>
> FYI, I crunch with a lot of various cards, both Nvidias and ATIs.
>
> A Radeon 4770 (640 processors) runs around 9k blocks per day @ around 
> 465Mkeys/sec
>
> A Radeon 4890 (800 processors, faster GPU clock) runs around 13.5k 
> blocks per day @ around 680Mkeys/sec
>
> An Nvidia 9800GTX (128 processors) runs around 4k blocks per day @ 
> around 200Mkeys/sec
>
> An Nvidia 9800GT (112 processors, slower than 9800GTX) runs around 3k 
> blocks per day @ around 145Mkeys/sec
>
> I think your 260’s should be faster than 4k per day – are you using 
> the most optimal core?
>
> The ATIs seem to be faster simply because they have more processors. 
> On a per processor basis, the Nvidias are more efficient, it seems.
>
> I would expect the 5870 to be double the 4890 as the 5870 has 1600 
> processors and runs at a similar clock speed. If you check the bugs 
> section, a user has reported a 5870 benching at 1.3BKeys/sec
>
> Regards.
>
> Randall Hose
>
> ICT Manager, Colac Area Health
>
> South-West Alliance of Rural Health
>
> PH 03 5232 5310
>
> Mob 0428 300 360
>
> Email rdjhose at swarh.vic.gov.au
>
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>   
Randell,yes using the fastest core(9) on both.

Bert


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