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Old 2012-03-30, 01:05   #12
bcp19
 
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Quote:
Originally Posted by Dubslow View Post
That's 'cause yours is at like 4.2 or 4.5 GHz, right? That's a bit more than 'slightly' OCd.

(I used 3.6 GHz, as you can see by the last 8 or so characters of the first link.)
Yeah, it's 4.327 according to CPUz with memory slightly overclocked to 824Mhz. But that is what the motherboard bios chose when I selected performance instead of balanced(I really don't know much about overclocking). I remember the system restarting around 10 times after I selected that, and wondering what the heck was wrong with it. It's stable though, I have 15 DC's with matching residues so far.
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Old 2012-03-30, 02:28   #13
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Over a 3-4Y life time running P95 at full load 24/7, the electricity consumption will be a significant part of the total cost. For the same amount of work done, having the latest generation hardware saves enough on the power bill to make up for slightly more expensive hardware.
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Old 2012-03-30, 02:52   #14
kladner
 
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Quote:
Originally Posted by db597 View Post
Over a 3-4Y life time running P95 at full load 24/7, the electricity consumption will be a significant part of the total cost. For the same amount of work done, having the latest generation hardware saves enough on the power bill to make up for slightly more expensive hardware.
Ain't it the truth! If I had taken that into account I might have an i5 or i7 now instead of a Phenom II. There are performance reasons, too. Otherwise Dubslow might not be kicking my butt in P-1 now. And, I might be saving some money on the electric bill.

Last fiddled with by kladner on 2012-03-30 at 02:53 Reason: electric bill comment!
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Old 2012-03-30, 03:01   #15
Dubslow
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Quote:
Originally Posted by kladner View Post
Ain't it the truth! If I had taken that into account I might have an i5 or i7 now instead of a Phenom II. There are performance reasons, too. Otherwise Dubslow might not be kicking my butt in P-1 now. And, I might be saving some money on the electric bill.
Heh, but your total throughput is so much higher than me. (I think that's because you use more than one mfaktc for the 460, 'cause with 1 I only get ~85% usage [which also means an extra P-1 worker].)

(There's also the AVX thing to consider. And it would be even more if I had faster memory! I've already said how mfaktc takes a hit with P95/S2 going.)


Edit: The best part is I'm at a dorm, with a fixed price, so I don't pay for my energy!

Last fiddled with by Dubslow on 2012-03-30 at 03:02
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Old 2012-03-30, 03:30   #16
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(I think that's because you use more than one mfaktc for the 460, 'cause with 1 I only get ~85% usage [which also means an extra P-1 worker].)
It is true. But I don't get much more usage out of two instances. In fact, in the last few days, I cut back one mfaktc and added a P-1 in the interest of adding CuLu. But you were already on track to sail past me. You've just got a better CPU. No way around it. Waah!

Last fiddled with by kladner on 2012-03-30 at 03:31
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Old 2012-03-30, 03:35   #17
LaurV
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Originally Posted by joblack View Post
I'm planing to buy a second PC for playing around with Linux. So I'm thinking about getting one which performs well with Prime95, too. :)

Which one gives best 'bang for my bucks' experience (for 2 and 4 cores)? I suspect Sandy Bridges but is a Celeron the best choice?
Forget Celerons, they are half cheap but quarter performers. The best output for the money you pay is reached for a SB 2x00y, with x=5,6 (don't go for 7, you pay more and the only difference is that you can overclock it a bit higher), y=k or space, to which you eventually add 2 gtx560 top overclocked (like the one with 950MHz, or 1G). For these two together you pay as much as for a 580, but the output is higher then a single 580. In fact, if you can afford a good big mobo, I would fill it with 4 or 6 or 7 (there are intel boards with 7 pci-e slots with enough distance between them) gtx560, hehe.
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Old 2012-03-30, 10:34   #18
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Originally Posted by cheesehead View Post
It seems to me that GPU L-L software testing is proceeding well. Might not any graphics card purchased now have a substantial chance to reliably contribute L-L during its lifetime?
If anyone ever develops OpenCL-Lucas!
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Old 2012-03-30, 21:49   #19
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The 'a compatible motherboard' part was by some way the largest expense when I built in early 2010 the dual-quad-Opteron that I've since sold to xilman - the RAM and the CPUs came from ebay, the case from a machine that was being thrown out at work, but dual-processor motherboards aren't that commonly found second-hand and cost three to five hundred pounds.
That is often true, but this case is more favorable.

About $200 for a dual LGA1366, easy to find. As low as $150 or lower if you look harder.

It is easier to find a motherboard for Westmere processors, since all LGA1366 motherboards that support the older generation Nehalem also work with the Westmeres I recommended.
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Old 2012-03-31, 22:41   #20
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Yes it's primarily about LL work.

Thanks for your enlightening answers so far.
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Old 2012-03-31, 23:37   #21
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What I recommend is to stay away from AMD Bulldozers :)

If it's 24*7 operation, then power is going to be a fair chunk of the cost and not the hardware. Like what was said modern CPUs are more power efficient.

Depends what funds you have available.

Like what was said a CPU with AVX is what you're after. Depending on your budget, you'd be looking at i7-2500k (quad core), i7-3570k (not out yet), i73930k (hex core).

Also throw in a GTX580 (again if you have the budget).

It is really easy to go overboard with buying hardware for Gimps :)

For the record: I have i7-920, i7-930, bulldozer, 2600k, 3930k. I'd buy another 3930k in a heartbeat if I had the funds.

-- Craig
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Old 2012-04-01, 00:40   #22
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And how many GPUs in the lot, now, Craig?
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