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4P 8 core Opterons vs Tri GTX - Page 2

post #11 of 18
Quote:
Originally Posted by NBrock View Post

Not under water smile.gif 41*c folding 24/7
Doesn't really change the power draw/efficiency which tends to matter for high-end folding rigs (for the most part).
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post #12 of 18
Well for power efficiency go for a 2/4p. For better resale value and a winter heat go the GPU route.

99% certain a 4p with Hyper 212's will be much quieter than a 3 GPU rig. Actually no I'm totally certain on that.
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post #13 of 18
For sheer efficiency cam is right. Dual IVB-EP chips. For initial cost and flexibility 2x 780 or 3x 680.
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post #14 of 18
Thread Starter 
I'll fold on my 7870, 7850, 3770K, for now. (Got a GTX 280 coming thanks to an OCN seller biggrin.gif )

Let's just wait and see what the new Radeons can bring us

Besides, it's kinda cold here, so I don't mind the heat that much.
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post #15 of 18
280s have exceptionally bad performance /watt ratio. Like 240W for 11k PPD or so.
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post #16 of 18
Yeah I have a GTX 285 that I got for $5 (lol, made a thread here about it) and I tried folding on it but it literally screamed with coil whine so I stopped it just because it was so annoying.

But 7850's and 7870's are nice little performers. thumb.gif
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post #17 of 18
Quote:
Originally Posted by TheBlademaster01 View Post

7970 get 120-130k on core 17, they kind of suck heat and efficiency wise vs 680s and 780s though.

Indeed but they still pull ahead than a higher clocked 680. tongue.gif
Now I want a 780 to dedicate to folding. frown.gif

Or to build a 2P rig. Because I love those motherboards.

Or a 4P but it's too grand.
Meh! I need more money.
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post #18 of 18
Quote:
Right now I can get 4 6100 series 8 core Opterons from ebay....
Not all 61XX series 8-core processors are created equal. The 6136 processors are 2.4GHz default, versus 6128, which are 2.0GHz default. With the QRB dividend, that 0.4 GHZ makes a huge production difference, as measured by points per day. If your objective with the 8-core 61XX processors is as a place holder until you can afford more powerful CPUs, I understand. I would though, not look at 6136 or 6128 as permanent hardware. If you still want the 8-core models and don't anticipate upgrading within a few months, do not get the 6128s. The 6136s will significantly outperform the 28s, but should only cost about $100 more for set of four. The 6136s also tend be fairly consistent, good overclockers. I had mine running at 2.7GHz. (Since then I've upgraded to 12-core processors, Magny Cours also.)

Here is production data for one of my former 4X6136 rigs, work unit/time per frame/total average points, including Quick Return Bonus:
8101: 15:11, 293,603 PPD
8103: 11:10, 465,507 PPD
8104: 08:32, 460,523 PPD
8105: 11:10, 454,624 PPD

Power draw on that system was approximately 630W, full load, overclocked, in a case, with several 120mm fans. At default CPU frequency, it was about 475W, if I recall correctly.
    
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