Questions and Answers :
GPU applications :
x4 or x16 slot critical with cuda?
Message board moderation
Author | Message |
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Chuck Gorish Send message Joined: 19 Jun 00 Posts: 156 Credit: 29,589,106 RAC: 0 |
all things being equal and speaking only about cuda processing and nothing else, with a gtx285 will there be a noticable difference in wu production whether it is in a x16 or a x4 slot? |
OzzFan Send message Joined: 9 Apr 02 Posts: 15691 Credit: 84,761,841 RAC: 28 |
No, it is not critical. In fact, tests in Number Crunching have shown the PCIe speed to make very little difference. |
Chuck Gorish Send message Joined: 19 Jun 00 Posts: 156 Credit: 29,589,106 RAC: 0 |
thank you! makes life much simpler now. |
TCP JESUS Send message Joined: 19 Jan 03 Posts: 205 Credit: 1,248,845 RAC: 0 |
I 'modified' a few x1 slots and ran some tests. I compared two IDENTICAL cards, 1 running in an x16 slot and the second card running in an x1 slot (at the same time) and there was essentially NO difference when comparing WU results and running time. The cards were Geforce 9600 GSO 768 MB DDR2 cards. I am reluctant to say if the same will ring true with GTX 200 series cards, but I can't see why not. The thread I started.... http://setiathome.berkeley.edu/forum_thread.php?id=54467 I am TCP JESUS...The Carpenter Phenom Jesus....and HAMMERING is what I do best! formerly known as...MC Hammer. |
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