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More GPUs For Folding

Poll Results: Which GPU(s)?

 
  • 0% (0)
    Dual Radeon 7770 running seperate WU
  • 87% (7)
    Radeon 7870
  • 12% (1)
    GTX 570
  • 0% (0)
    Radeon 6950
  • 0% (0)
    Radeon 6970
8 Total Votes  
post #1 of 7
Thread Starter 
Hey guys, I'm looking to use the spare slots/power in my rig for folding - first question is:

Do the x16 slots have to be at x8 or x16 to use a GPU? I believe my motherboard can go to x16/x8/x8 with the first three slots, and the fourth is in x4 mode. If I get an additional card, I will need to place my current card in the second slot, as the aftermarket fan makes it triple slot. I do have the Corsair Obsidian 650D now, so if there is a way to use a PCIe riser and keep the additional GPUs in place, then I can do this easily.

Next thing is: I'm seeing some 570's on eBay for a nice price, and they look like they perform similarly in benchmarks compared to a 660, but how are they for folding? Even if they aren't that great, I don't have much money, and I would rather get that SSD I've been wanting - so I wouldn't care for 30k PPD on these things for the price I'm seeing. Since I would be getting a couple for a good price, I wouldn't mind OC'ing them and giving some cheap aftermarket coolers.

Lastly: I've looked around and couldn't find any info on this but - I would like to constantly fold on one GPU while the others only fold while the computer is idling. How would I be able to configure this?

Also: What other cards would be good for folding from NVidia, and what cards would be good from AMD? This is very budget oriented.

EDIT: New poll: Could use some help deciding. It's all about the WU, not PPD. And also, wouldn't mind a few °C for a few extra $. Note: The dual 7770 option would be bought from a friend
Edited by AcEsSalvation - 7/27/13 at 3:12am
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post #2 of 7
1. PCI speeds shouldn't affect folding production. x4 is fine.
2. There are PCIe extenders if that is what you are asking--but they are pricey last time I checked. Ebay is the best bet.
3. I know the 6xx series cards are much better on core17 then the previous gen. Specifically the 660v570 I couldn't tell you. My 660ti obliterates my 560ti 448 on core17 (70k v 35k) but they are approx the same on core15 (30-35k).
4. The only thing I can think of to fold on only one GPU is to set priority very low. Or manually pause that client when gaming.


As for which cards to pick I think 660ti is the best ppd/$ Nvidia right now (it's about 200$ used). Though that depends on the WU and could always change if stanford changes the QRB algorithm. ATI I am under the impression the 7970 at ~100k ppd and ~300$ used is the best ppd/$. Though I don't know much about the other cards performance in ATI's line-up.

Good luck!
post #3 of 7
Thread Starter 
Thanks for the info. I didn't know if having one on the x4 slot was possible - at least not having the motherboard throw a fit about it. I've found some risers for about $10. I don't actually care about PPD that much, more about WU completed. If I can get a core15 done faster than a core17, but lose 20k PPD, I'm fine with that.

That sucks about manually managing your client... I know I will end up forgetting to activate the paused slots tongue.gif
I know in order to fold on the GPU while the computer is in use you have to set on full. I could just pause my CPU and main GPU, but like I said - I'm going to forget. biggrin.gif

EDIT: Added new poll. Help me out please!
Edited by AcEsSalvation - 7/27/13 at 3:11am
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Some 2.5in 1TB drive Stock Windows 7 Home Premium 64bit Corsair TX850 
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Cooler Master HAF 
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i7-960 Gigabyte X58 ADATA 2x2GB 1600C9 1.65V-1.5V Generic DVD 
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post #4 of 7

The 69xx ATI/AMD series still isn't great for folding.  With Kepler's PPD being so much higher (and power usage being so much lower) than Fermi cards on Core 17, it's hard to recommend a 570 as well. 

 

I voted 7870 as that is the card with the PPD of the given selections.

 

HD 69xx still do ~15k PPD AFAIK

GTX 570 would be ~ 30-35k PPD

I believe I've seen users reporting ~ 20k on 7770s, I could be wrong though.

I have seen users post in the core 17 thread 7870s getting ~60-65k PPD.

 

Hope that helps.

post #5 of 7
I agree with mrwesth regarding the Nvidia GTX660Ti, it's probably the best from the green team if you have power consumption and price to think about. Unfortunately it doesn't have a counterpart in the 700-series (yet) and is EOL soon (afaik), but that could mean there are some sort of discounts to be had.

Out of those listed in the poll I'd go with 7870, it performs well and doesn't cost an arm and a leg.


My 6970 at stock gets me 17k on P8900. Probably hard to one above 20k on a consistent basis. It also draws about 230W with the rest of the (low-end) PC is idling.



Measuring performance according to how many WU's you can complete is a difficult measure because of the vast differences between the size of WU's, both between CPU and GPU units but also between certain CPU units. If you really wanna complete a lot of WU's, get a 4P and hammer out regular SMP units.
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post #6 of 7
Voted 7870 (7870 XT if you can manage). If you choose to buy one make sure you get a good overclocking version with unlocked voltage.
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post #7 of 7
I'd recommend a 7950 if possible. They can be found fairly cheap today, and even less used. I got a used Gigabyte 7950 for $200 and it's great, quiet and very powerful! If you don't want a 7950, then I'd get the 7870 instead.
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Rosewill HIVE 750W Rosewill Blackbone 
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500 GB Seagate Barracuda Stock Windows 7 LG 20" 900p display 
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