mersenneforum.org  

Go Back   mersenneforum.org > Great Internet Mersenne Prime Search > Hardware > GPU Computing

Reply
 
Thread Tools
Old 2014-07-12, 21:05   #1
TheMawn
 
TheMawn's Avatar
 
May 2013
East. Always East.

11·157 Posts
Default 5+ GPU support

Hi, folks.

I've been reading about hardware lately and the things people are saying seem to be conflicting, so I've come here to see if anyone can help clear up my confusion.

Whenever someone asks about support for more than four GPU's, 95% people say it isn't possible right away because they assume that everybody running multiple GPU's is running SLI or CrossFireX.

Some of the BitCoin miners or people running Folding@Home were seen using three GTX 295's which makes six GPU's total, so once the gamers stopped trying to hijack the compute discussions, the consensus was that it was at least possible for NVidia cards, but a lot of people were maintaining that Windows cannot support more than four AMD GPU's.

I have also read that Windows cannot run more than 8 GPU's period, and in a situation where someone is running 4 dual-card GPU's, for example, the onboard graphics, if any, must be disabled (because that would make nine).


Can anyone substantiate any of these claims?

Last fiddled with by TheMawn on 2014-07-12 at 21:07
TheMawn is offline   Reply With Quote
Old 2014-07-13, 02:12   #2
Mark Rose
 
Mark Rose's Avatar
 
"/X\(‘-‘)/X\"
Jan 2013

3×977 Posts
Default

This thread has a lot of insight: http://devgurus.amd.com/thread/158863
Mark Rose is offline   Reply With Quote
Old 2014-07-13, 02:29   #3
nucleon
 
nucleon's Avatar
 
Mar 2003
Melbourne

5·103 Posts
Default

I currently have

PC name: G7
2x 7990s (dual gpu card)

PC name: G3
2x 7990s (dual gpu card)

PC name: G6
1x GTX 580

PC name: MC
1x GTX 580

PC name: G4
1x Titan Black
1x GT750 TI

Total: 12 GPUs.

Across 5x PCs.

I have 2x 7990s in one machine (total=4GPUs) but heat is a real problem. I can't imagine 3x 7990s in the one machine without some creative clocking/exotic cooling/psu. Even if the OS can handle that much.

As it is G7 is cooled by a 50cm fan, and still the GPUs are running 80degC+

Aside from theoretical knowledge, there are a few hardware obstacles before you get to 5+ GPUs..


-- Craig
nucleon is offline   Reply With Quote
Old 2014-07-13, 02:31   #4
kracker
 
kracker's Avatar
 
"Mr. Meeseeks"
Jan 2012
California, USA

32·241 Posts
Default

Try "6 gpu mining rig"
http://img209.imageshack.us/img209/8125/miningrig.jpg
kracker is offline   Reply With Quote
Reply

Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Support Organizations xilman Soap Box 3 2017-04-27 08:13
Crowdfundings we support. chappy Lounge 0 2017-02-18 01:18
AMD Linux support fivemack GPU Computing 1 2015-12-11 03:28
Support AVX Unregistered Information & Answers 5 2011-07-05 17:12
Athlon64 support? JuanTutors Software 1 2004-06-04 02:46

All times are UTC. The time now is 12:19.

Sun May 16 12:19:41 UTC 2021 up 38 days, 7 hrs, 0 users, load averages: 2.23, 2.44, 2.25

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.

This forum has received and complied with 0 (zero) government requests for information.

Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation.
A copy of the license is included in the FAQ.