x4 or x16 slot critical with cuda?

Questions and Answers : GPU applications : x4 or x16 slot critical with cuda?

Author	Message
Chuck Gorish Send message Joined: 19 Jun 00 Posts: 156 Credit: 29,344,292 RAC: 861	Message 920481 - Posted: 22 Jul 2009, 22:56:00 UTC
	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? ____________
	ID: 920481 ·

Volunteer tester Send message Joined: 9 Apr 02 Posts: 12012 Credit: 19,604,076 RAC: 43,525	Message 920545 - Posted: 23 Jul 2009, 2:54:33 UTC - in response to Message 920481.
	No, it is not critical. In fact, tests in Number Crunching have shown the PCIe speed to make very little difference. ____________
	ID: 920545 ·

Chuck Gorish Send message Joined: 19 Jun 00 Posts: 156 Credit: 29,344,292 RAC: 861	Message 920608 - Posted: 23 Jul 2009, 8:10:24 UTC - in response to Message 920545.
	thank you! makes life much simpler now. ____________
	ID: 920608 ·

TCP JESUS Send message Joined: 19 Jan 03 Posts: 205 Credit: 1,248,845 RAC: 0	Message 920895 - Posted: 24 Jul 2009, 1:42:51 UTC Last modified: 24 Jul 2009, 1:44:40 UTC
	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.
	ID: 920895 ·

Questions and Answers : GPU applications : x4 or x16 slot critical with cuda?