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Old 2008-02-20, 20:10   #12
Andi47
 
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I will do some additional benchmarks on a core 2 duo tonight.
Benchmark on a Core 2 Duo @ 2 GHz:

13e: 0,36703 sec/rel., yield: 547
14e: 0,36638 sec/rel., yield: 1097
15e: 0,54333 sec/rel., yield: 2207
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Old 2008-02-22, 05:41   #13
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Off-topic: Earlier in the thread, there were reports of a Pentium D and a Prescott being put on this project. Might I suggest selling these things and buying a new computer for crunching? The ratio of crunching to power usage is so abysmal that the idea of these things crunching 24/7 is abysmal to me.

Maybe you should give it someone who WON'T use it for Distributed Computing and buy something, ANYTHING else.

I'm sorry if this post is offensive to either of the two posters, but, well...WOW!!! Even if you don't believe in global warming, running these things 24/7 is a bit like poisoning a kitten because you'll get paid for the act.
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Old 2008-02-22, 06:02   #14
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Off-topic: Earlier in the thread, there were reports of a Pentium D and a Prescott being put on this project. Might I suggest selling these things and buying a new computer for crunching? The ratio of crunching to power usage is so abysmal that the idea of these things crunching 24/7 is abysmal to me.

Maybe you should give it someone who WON'T use it for Distributed Computing and buy something, ANYTHING else.

I'm sorry if this post is offensive to either of the two posters, but, well...WOW!!! Even if you don't believe in global warming, running these things 24/7 is a bit like poisoning a kitten because you'll get paid for the act.
Hmm...I beg to differ. Pentium D's and Prescotts are still quite viable for distributed computing/prime searching in general (though maybe not so much so for factoring in particular), and as such still represent quite a good crunching/power usage ratio. I mean, really, how long would it take you to pay for the cost of upgrading your computer (which, in the case you described, isn't that old anyway) with the power savings?
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Old 2008-02-22, 06:03   #15
Andi47
 
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Quote:
Originally Posted by jasong View Post
Off-topic: Earlier in the thread, there were reports of a Pentium D and a Prescott being put on this project. Might I suggest selling these things and buying a new computer for crunching? The ratio of crunching to power usage is so abysmal that the idea of these things crunching 24/7 is abysmal to me.

Maybe you should give it someone who WON'T use it for Distributed Computing and buy something, ANYTHING else.

I'm sorry if this post is offensive to either of the two posters, but, well...WOW!!! Even if you don't believe in global warming, running these things 24/7 is a bit like poisoning a kitten because you'll get paid for the act.
My Prescott is NOT running 24/7 just because it consumes so much power (and the fan is damn loud because the CPU is producing lots of heat).

And yes, I am planning to replace my Prescott by a Core 2 Duo or quad based on 45 nm technology.

According to wikipedia, the Q9550, which will come out around Feb - Mar 2008 (hopefully) will use 95W, so it is probably best bang per kilowatt (with the exception of more expensive laptops).

Last fiddled with by Andi47 on 2008-02-22 at 06:04
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Old 2008-02-22, 06:06   #16
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My Prescott is NOT running 24/7 just because it consumes so much power (and the fan is damn loud because the CPU is producing lots of heat).

And yes, I am planning to replace my Prescott by a Core 2 Duo or quad based on 45 nm technology.

According to wikipedia, the Q9550, which will come out around Feb - Mar 2008 (hopefully) will use 95W, so it is probably best bang per kilowatt (with the exception of more expensive laptops).
Are Prescotts generally heavy on power consumption, or something like that?
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Old 2008-02-22, 06:20   #17
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Are Prescotts generally heavy on power consumption, or something like that?
Prescotts with 3,4 or 3,6 GHz, yes. (and a Core 2 Duo or quad has more throughput than a prescott)
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Old 2008-02-22, 06:27   #18
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Prescotts with 3,4 or 3,6 GHz, yes. (and a Core 2 Duo or quad has more throughput than a prescott)
Ah, I see. I used to have a P4 3.2Ghz in my primary machines--would that be considered a Prescott? (I think it was a Prescott, if memory serves.) The whole machine collectively used about 2.4 amps of power (besides the CPU, the machine contained a stock 450W power supply, two 5400RPM hard drives, two optical drives, and a somewhat-lousy graphics card).
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Old 2008-02-22, 06:39   #19
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A P4 3,2 GHz could either be Prescott, Prescott 2M or Cedar Mill.

I haven't measured the power consumption of my PC, but I see it producing damn much heat when crunching - temps around 60°C with the fan running at maximum speed (and thus being loud!!! A Core 2 Duo is much more quiet when crunching).
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Old 2008-02-22, 06:57   #20
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A P4 3,2 GHz could either be Prescott, Prescott 2M or Cedar Mill.

I haven't measured the power consumption of my PC, but I see it producing **** much heat when crunching - temps around 60°C with the fan running at maximum speed (and thus being loud!!! A Core 2 Duo is much more quiet when crunching).
Okay. I bought it around the end of summer 2005, if that helps.

And as for temperature/noise levels: yes, I agree, my computer got a lot quieter when I upgraded my P4 (probably Prescott) to a Core 2 Duo 2.2Ghz recently. However, some of that might be due to the fact that I got a new, better power supply to replace the stock one (which was somewhat noisy) during the upgrade.

As for power consumption, I probably should check my machine again now that I've got a Core 2 Duo, to see how much better it's gotten.
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Old 2008-02-22, 08:22   #21
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Quote:
Originally Posted by Andi47 View Post
A P4 3,2 GHz could either be Prescott, Prescott 2M or Cedar Mill.

I haven't measured the power consumption of my PC, but I see it producing damn much heat when crunching - temps around 60°C with the fan running at maximum speed (and thus being loud!!! A Core 2 Duo is much more quiet when crunching).
Up here in the sub-arctic I have to heat my house most months of the year anyway. Makes relatively little difference to my energy bill whether the heat comes from electrical fan heaters or not. If the fan heaters assist my hobby, so much the better.


Paul
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Old 2008-02-22, 16:54   #22
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Up here in the sub-arctic I have to heat my house most months of the year anyway. Makes relatively little difference to my energy bill whether the heat comes from electrical fan heaters or not. If the fan heaters assist my hobby, so much the better.


Paul
Yeah, I couldn't agree more--I keep my primary machine in my bedroom, thus it helps keep me warm on cold winter nights.
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