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post #61 of 581
One thing to look at is the PPW(Points Per Watt). The 4P 6172 rig will give you 439K PPD -- 708 PPW vs 218k PPD -- 484 PPW(it does not change with x 2 SR-2 rigs). Interlagos showed 451k PPD roughly at a PPW 670 on 6274's. All this info comes from H forum. To me it looks like AMD is still the better solution unless Im looking at this info the wrong way. If thats the case please someone explain this to me.
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post #62 of 581
Quote:
Originally Posted by Desert Rat View Post

One thing to look at is the PPW(Points Per Watt). The 4P 6172 rig will give you 439K PPD -- 708 PPW vs 218k PPD -- 484 PPW(it does not change with x 2 SR-2 rigs). Interlagos showed 451k PPD roughly at a PPW 670 on 6274's. All this info comes from H forum. To me it looks like AMD is still the better solution unless Im looking at this info the wrong way. If thats the case please someone explain this to me.

You are correct that the Opterons are the more efficient solution. The 6100's are a little better than the 6200's as well.
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post #63 of 581
Quote:
Originally Posted by Grandpa_01 View Post

And those that are lucky enough to have the AMD ES chips are getting 20% to 30% on them and if I remember correctly they were getting 13 min frame times on 6904's on the higher clocked ones.

I don't think sfield is getting 13min ... I know there are a few other nuts that have them clocked at ~2.8 but to my knowledge no one other than me has a 4p @3ghz.... I doubt you will see sub 14min from their rigs... not sure if I can get mine sub 14min... I lost a few vrm heatsinks in my travels so I need to replace those before I fire it back up. but 14:40 is what I was doing and thats 770k ppd.

and 2 chips were 1.7 the other 2 2ghz....thats >50% avg thanks thumb.gif

yall can talk to tear... He has been walking a few through the SM bus oc process ...
It is quote a bit more complex than a flashed bios... but he has been working on some tools to make it a touch easier.
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post #64 of 581
So what would be the best multiprocessor setup to maximize PPD for around $2K? 2P SR-2 or 2P AMD IL/MC?
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post #65 of 581
Thread Starter 
Quote:
Originally Posted by musky 
$1500-$2000 gets you into the 4p realm - at least for a motherboard. The nice thing about the 4p boards is that you can run them with any number of procs, so you wouldn't need the huge investment up-front. The down-side is that they are significantly more expensive.

Should you buy chips off eBay? Yes, you should. If you are patient, you can usually find some good deals.

CPUs - anywhere from a 6164HE to a 6180, depending on what you want to spend. I would go with 12 core chips myself, although you could go 8 core for quite a bit less (sub-@$200 each.) I would not go with Interlagos - they are more power-hungry than the Magny Cours chips. 6172/6174 may be the sweet spot price/performance. 6166HEs can usually be found for around $300 each, and are not bad at all (370K ppd in a 4p configuration stock with lousy memory.) Again, it is all about how patient you are. You could most likely buy 6174s today for $500 each, or you can sit on auctions and try to snipe them for $400 or less. Just let us know what you are trying to get, as many of us watch everything on eBay and try to snipe them ourselves...

Board - depends on your cooling plans. SuperMicro is the way to go if at all possible. The newer version can be had for $635 or so new, but the socket layout is horrible. The older ones have a more reasonable socket layout, but are also around $75 more expensive. Look on the SuperMicro site for one with the features you need, then check for the best price. Note that you will most likely have to wait a couple weeks, as most (all?) places actually drop-ship from SM. SM will allow you some overclocking (12.5% is fairly common.)

Memory - 1333 CAS 8 or 7, 1.5V. The big things are 1.5V or less and as tight timings as you can find/afford. 1333 CAS 7 and 1600 CAS 8 are pretty common. You do not need ECC memory.

Cooling - Dynatron A5 or A6, CoolerMaster Hyper 212+, water. Choices are limited, and it all depends on your noise tolerance. You are also more limited with the newer SM boards because of the socket layout - CM 212+'s will not work on them. The CM 212+'s will need to be modded regardless if you use them - R-Type has a nice write-up somewhere on how to mod them.

Final investment - depends completely on what CPUs you get and how patient you are. It also depnds on whether or not you absolutely have to overclock - I'll have a Tyan board for sale shortly in the $500 range. The range would be roughly $1500 (low end 8-core MC chips, a used/open box Tyan board, and cheap 1333 CAS 9 memory) to well over $3000 (high end 12-core chips and nice memory) or well over that if you find ES chips.

source

Normally I wouldn't outsource a post, but in this instance, there is not point in re-inventing the wheel. thumb.gif
Edited by hoth17 - 12/16/11 at 10:18pm
post #66 of 581
Thread Starter 
I just got a pm asking about SB-E vs. Interlagos vs. Magny Cours, and it was a long enough answer that I figure I might as well post it here:

Well, I had a 3930k, and sold it quite quickly. Not a great folding option, and not a great gaming/folding option. I say this because to really get your money's worth, you should be in Linux 24/7, so, not great for gaming. Not great for folding because it will suck up 350w, require nice cooling and still net you < 150k for about $1k.

As for MC vs. IL, I'm still MC (I bought 4 6174s). I'm sure you have read the MC IL debate over at [H], if not, off you go, http://hardforum.com/showthread.php?t=1652213. However, I'm sure you have, so here is my take on it.

A 6272 will perform about 25 seconds faster than a 6174, that will be about 15k faster. Now, if you were planning on buying your chips retail regardless of price, IL all the way. However, because a 6174 can be had on ebay for ~450 (I just bought 4 [auctions] that averaged out to $450 each), you are saving $400 dollars over IL. That, and it will consume 100+ watts less, MC is the right choice. Even at $525, 15k PPD is not worth the extra watts, if you are paying for it.

Now, if you are not paying for your own electricity, and you don't want to wait for and 6174 auctions to come up, then IL is the way to go.

Having said all of that, there is a fourth option. Right now, I think it is the best option. Buy a 4p board and 4 x 6128s. This will cost about $1300. That is about the cost of a 2p board and two MC or IL chips (maybe slightly more). It will net you 260k PPD, which is far more than the 180ish you can expect form a 2p IL or MC setup. Then, over time, as auctions come up, you can upgrade to MC or IL. And better yet, used IL may start cropping up for < $400.
Edited by hoth17 - 12/16/11 at 11:53pm
post #67 of 581
off to a good start.... but 6128s are MC just octos... but I agree its a good idea to start with quad octos over dual dodecas (12) unless of course you can afford to start with quad dodecas.
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Harbringer
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post #68 of 581
So I have on order an SR-2, an ASUS 2p intel board, a G34 2p board, and a G34 4P board. I have processors coming for them all as well. Going to do some testing and post results here to get a definitive set of numbers. Mostly because I wanted to see them all for myself as well.

Will see what happens I guess.
    
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post #69 of 581
Thread Starter 
Good man. thumb.gif
post #70 of 581
Buckwheet: I'm waiting with anticipation. biggrin.gif
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