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will this work

Win Vista/7 had issues with more than 7 GPUs

I have no clue if that is the case now.

Also with that amount of money spent a SMP rig will do way more work and get better ppd. Also much lower hat and power use.
 
Kendrak said:
Win Vista/7 had issues with more than 7 GPUs

I have no clue if that is the case now.

Also with that amount of money spent a SMP rig will do way more work and get better ppd. Also much lower hat and power use.
Click to expand...

this folding machine is a gpu based one. may sound dumb but i want 1 Gpu based folding machine. i have plans for a 4cpu folding beast
 
Filter said:
this folding machine is a gpu based one. may sound dumb but i want 1 Gpu based folding machine. i have plans for a 4cpu folding beast
Click to expand...

/shrug

Do 3 of them and see how that works, then add the 4th for giggles if you want.
 
Filter said:
this folding machine is a gpu based one. may sound dumb but i want 1 Gpu based folding machine
Click to expand...

I can understad your decision to do this. A little diversity in projects is a good thing.
 
Dealing with the heat all these GPUs will produce is far more trouble than it's worth. If you need that much GPU power, I would suggest putting together two separate machines with two cards each rather than a single one with four cards. It'll be easier to manage and far more reliable.
 
Zero82z said:
Dealing with the heat all these GPUs will produce is far more trouble than it's worth. If you need that much GPU power, I would suggest putting together two separate machines with two cards each rather than a single one with four cards. It'll be easier to manage and far more reliable.
Click to expand...
I don't know. I ran three 9800gx2 back in the day and they were hot but manageable.

These dual 460 cards appear to have superior cooling.
 
jebo_4jc said:
I don't know. I ran three 9800gx2 back in the day and they were hot but manageable.

These dual 460 cards appear to have superior cooling.
Click to expand...
Four dual-460 cards will produce considerably more heat than three 9800GX2s, no question about it.
 
I also ran 3x 9800gx2 cards.

Boxfan is your friend.
 
ive had 4 460 o/c at 850+ mHz with a typhoon 5200rpm sitting on them and they stayed nice and cool at 70c i don't think ill have an issue keeping them cool

and i want to see if i can get the record for most ppd on a single socket system.
 
IIRC those dual 460's show up for ~$250 periodically on EVGA b-stock.
 
R-Type said:
IIRC those dual 460's show up for ~$250 periodically on EVGA b-stock.
Click to expand...
yeah, i was thinking that myself, but they aren't there ATM.

B stock is such a crap shoot though.
 
Zero82z said:
Four dual-460 cards will produce considerably more heat than three 9800GX2s, no question about it.
Click to expand...

might want to get a open chassis from spot using pcie ribbon cables...
 
The ribbon risers are great, and you would only need 2 (~$25) to improve cooling significantly. I have a couple of double-decker rigs here for bitcoin. You can actually learn a lot and get some great ideas from the bitcoin crowd for multiple GPU rigs. I'll try to get some screenshots of my setups. The simplest one involves a motherboard tray cut out of an old case and a couple piece of cheap wood from you local Home Depot/Lowes/Mennards.

I'd probably worry about power myself - 8 of those suckers have to pull at least 1200W from the wall, plus everything else to run the system. I have been stopping at 3 cards/machine, which keeps me at something a 750W PSU can supply (no CPU involved to speak of) and is one heck of a lot easier to manage.
 
i have a lian li tech bench and 4 460gtx in it before. all cards were at 70c.

i have decided im just going with 4 560ti. they produce about 14-15kppd. at 950mhz.
reason im going this route is i think the 8 gpu's would of been too much for the 1200 corsair. and didn't want to dable with a dual psu setup atm.
 
the 560ti is a winner. Let me know what you end up with. I'm in the market myself.
 
jebo_4jc said:
the 560ti is a winner. Let me know what you end up with. I'm in the market myself.
Click to expand...

i bought 1 to test with a while ago. and getting 14.7k at 950mhz nice and cool so far im pressed with it so i will be getting 3 more in the future.
 
Would GTS 450's be off the table? I know there are some mobo's with 6-7 x16 slots. Thought those things did 8-10k ppd each. You can get them for under $100 now I believe.
 
I really don't think 560 ti's are worth the price premium for the ppd, particuarly when you can get 460's below $100 on a regular basis.
 
For pure folding the 768mb 460 probably is still the best bang for buck.

I need gaming performance though so the 1gb 460 and the 560 are more appealing.
 
jebo_4jc said:
For pure folding the 768mb 460 probably is still the best bang for buck.

I need gaming performance though so the 1gb 460 and the 560 are more appealing.
Click to expand...

My experience with 460's led me to believe gaming and performance are mutually exclusive terms with those cards. Granted I was on a 775 system which are prone to DPC latency spikes with them but going to a GF100 gpu from a GF104 unit was night and day in terms of fluidity.
 
R-Type said:
My experience with 460's led me to believe gaming and performance are mutually exclusive terms with those cards. Granted I was on a 775 system which are prone to DPC latency spikes with them but going to a GF100 gpu from a GF104 unit was night and day in terms of fluidity.
Click to expand...
were you using using 768MB versions? They can be limited by VRam pretty quickly.
 
seeing how my 460 768meg is seeing worse performance on the new wu is what me try the 560ti.
 
Would GTS 450's be off the table? I know there are some mobo's with 6-7 x16 slots. Thought those things did 8-10k ppd each. You can get them for under $100 now I believe.
Click to expand...
With the new series of GPU3 work units, the 762X series, GTS 450 production took a big hit. The new work units require higher shader counts, as the modeled protein molecules are more complicated (excuse the simplified explanation). In practical terms, going from the previous generation of work units to the present, my GTS 450s went from an average of 8500-9000PPD down to 7400PPD. Additionally, the cards are running about 6C higher temps. The good news is that the Folding GPU core that processes the new units, Core 2.20, allows much more efficient operation, in that the CPU resources are drawn upon very little. My Folding boxes each run 3 X GPU (GTS 450s) and and 8-thread CPUs (Lynnfield I7s and 2600Ks). I am now able to run all these machines' SMP2 bigadv clients now set at -SMP 8, and still multi-task and still run a GPU3 client for each GPU. (Right, that's 3 X GPU3 client for each machine, with no CPU core allocated for the video cards!) So, the CPU production increase compensated for the GPUs (GTS 450) decline.

If I were purchasing new video cards where Folding was to be the primary requirement, I'd be looking at GTX 560ti. The Nvidia cards with higher shader counts than the 450s haven't experienced the big drop in production. 560ti is, IMO, the best bang for the buck. You'd need two GTS 450s to equal it.

Caveat - it remains to be seen if the 762X work units are the template for the future GPU Folding. It's not a given, but just about.
 
Kendrak said:
Win Vista/7 had issues with more than 7 GPUs

I have no clue if that is the case now.

Also with that amount of money spent a SMP rig will do way more work and get better ppd. Also much lower hat and power use.
Click to expand...

its not the gpu's windows 7 has a problem with, its that it only supports up to 8 displays.. typically dual gpu cards = 3 displays, single gpu cards = 2 displays (yes they support more than 3 and 2 displays but thats how windows see's it.

windows xp on the other hand doesn't have the 8 display limit but does have an 8 gpu limit.
 
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