Re: difference between cuda and stream

Bert,

Having both ATI/AMD and Nvidia cards, there is no comparison between
the two for crunching RC5 as the ATI/AMD cards are much much
faster. The fastest nvidia I have is a 560ti, and the performance
of that card is matched by an AMD 6570 which costs much less and
consumes much less power and puts out basically no heat, where the
560ti sucks power and puts out much heat. An ATI/AMD 6770, using
the stream519 client on winXP32 will crunch a 32stats credit
workunit/block/whatever in 128 seconds, which works out to 21,600
points a day, which I think is what you are asking. While I don't
have a GTX 690, I would seriously doubt that it would match that in
points per day on RC5, and again, even if it did the heat generated
and power used would be in favor of the AMD card.

An other item for you to keep in mind is when you start using the
AMD 7770 cards or higher, you will have to be using the rc5 openCL
client as changes in the chip design put the stream client out of
business for that series. And also you need to make sure that the
motherboard PCI version will support the upper end AMD PCI card
software requirements.

On the other hand if you also crunch folding@home, the opposite is
true as nvidia totally outperforms the amd cards. So buy the card
for the predominant distributed computing project you intend to use
it mainly for.

On 1/7/2013 5:20 PM, bert wrote:

Would you know how much per day a 7970 does?

Bert
On 1/7/2013 8:02 PM, Joseph Kaye wrote:

On 1/7/2013 6:02 PM, bert wrote:

Since I don't own an AMD card and have been strictly NVIDIA brand,I've
been curious as to which is faster cuda based cards or stream based
cards. I have been looking at the GTX 690 and the ATI 7970(is this the
latest?) I'm thinking that a GTX 690 will do about 64k blocks a day,but
having never had a stream card I can't imagine what one would do in a
day. Thanks.

Bert
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Looking at the Client Speeds Database
( http://cgi.distributed.net/speed/query.php?cputype=all&arch=4&contest=rc572&multi=3 )
I'd say the DAMMIT (ATI/AMD) cards are much faster. An AMD Radeon HD
7970 is doing 3,600 Mkeys/sec.

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