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Which card for more PPD - Page 2

post #11 of 21
Quote:
Originally Posted by HobieCat View Post
Isn't that a 460 SE though? Don't they have less processor cores than a regular 460? Would that make it worse than a regular 460 at folding, I'm not sure but I think this might be the case.
Yes, this is true. A regular 460 has 336(I think) processing cores, which is a substantial jump.

That still being said, if you DON'T want to overclock--those cards would be fairly similar in PPD, and if you're buying 4 of them--you'll get the last GTS 450 for almost "free" (in comparison to the cost of 4x 460s). Something to consider.

If you will O/C, the 460 has a lot of O/C headroom. I'm running the cheap Palit GTX 460 (768mb) versions at 855 core(forgot what the shader is, but its linked so you can figure it out) for folding for a week now and no issues at all. They average 12k PPD each with a 2600k folding on all 8 cores in the same machine. If you get those 900 point WU's, they get about 15k PPD.

I don't know how dead set you are on that specific GTX 460, but there are definitely better deals--especially considering (I assume, since you can't QuadSLI 460s) you're doing this mainly for folding.

One way(just an example) is to use http://www.ebillme.com/ and get 10% cashback (which I think is 20% on Tuesdays if I remember correctly?) at mwave.com and buy their Palit GTX 460 (768mb) cards. They're $129 out the door, plus the cashback you would be in great shape.

I hope this helps! Always looking forward to more folding power at OCN
post #12 of 21
Quote:
Originally Posted by ACharmingQuark View Post
460 still - even if it is an SE model.

The GTX460 SE has a wider data path for memory, 8 more ROPS, and 256MB more memory and so it would be be faster than the GTX460 768MB. the 768MB card has more cores, but it has less memory, ROPS and data path.

Compare:

GTX460 SE.............288 cores, 256bit memory, 32 ROPs
GTX460 768MB........336 cores, 192bit memory, 24 ROPs
GTX460 1GB............336 cores, 256bit memory, 32 ROPs

*The text in Italics above is cribbed from the EVGA forums - credit where credit is due.*

ACQ
The memory bandwidth and the size of the memory have no affect on folding performance. The 768mb version gets the exact same PPD as the 1GB version. So I was wondering if the processors cores have something to do with it, and if the 460 SE's fewer processor cores would mean it's worse at folding than a regular 460?
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post #13 of 21
Quote:
Originally Posted by HobieCat View Post
The memory bandwidth and the size of the memory have no affect on folding performance. The 768mb version gets the exact same PPD as the 1GB version. So I was wondering if the processors cores have something to do with it, and if the 460 SE's fewer processor cores would mean it's worse at folding than a regular 460?
Correct, sir.
post #14 of 21
Quote:
Originally Posted by HobieCat View Post
The memory bandwidth and the size of the memory have no affect on folding performance. The 768mb version gets the exact same PPD as the 1GB version. So I was wondering if the processors cores have something to do with it, and if the 460 SE's fewer processor cores would mean it's worse at folding than a regular 460?
Good point - my bad. The focus is folding here and more Cuda cores should equal better folding performance. Therefore one should expect 460-1GB & 460-768KB > 460SE-1GB, at least in terms of PPD. How much I don't know but if it is based on simple percentage of cores one would expect up to 15-18% more PPD from the non-SE 460's.

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post #15 of 21
I'm also looking to purchase a new gpu for folding. The 460 seems nice, any other better ones for $250?

I've got an ati board, whats a good gpu in the $250 range to fold on?

read about an issue with ati cards, can they still fold? whats the deal
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post #16 of 21
470s are under $250. That'll get you about 14-15k depending on the units.

To the OP, the SE probably has a bit of an advantage over the 450, but there's no data for it in the PPD list to compare numbers with. It would be neat if you could get the SE, just so we could have some data for it, lol.
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post #17 of 21
Quote:
Originally Posted by SgtHop View Post
470s are under $250. That'll get you about 14-15k depending on the units.

To the OP, the SE probably has a bit of an advantage over the 450, but there's no data for it in the PPD list to compare numbers with. It would be neat if you could get the SE, just so we could have some data for it, lol.
I didn't post it, but I used to have a 460 SE. I was getting about 10.5k PPD oppose to my current 12k with the non SE editions. I think those numbers were on a p6801 unit.
post #18 of 21
So, aye, a bit higher than the 450s. Not much though. What were your clocks with the SE, Hoth?
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post #19 of 21
I think about 900. I don't remember the clocks, but I know it was the max overclock the card could handle on stock cooling. I think I have a saved screen shot of hfm, I'll see if I can find it.

edit:

I only have a screen shot of them at stock. But now I can tell you they were p6800 units at the time. I know I broke 10k with the max overclock, but not by much. I do remember now, one didn't break 10k.



Okay, now I know this is the breakdown for me:
8.5k 450s
9.8-10.5k 460 SE
11.7-12.3k 460 768mb
12.5k 460 1gb
all on either p6800 or p6801
Edited by hoth17 - 2/1/11 at 1:21am
post #20 of 21
Interesting. I'd say go with the 460SE then, it's not that much more.
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