Sandy Blitz is here
13 Jan 2011 10:32:24 UTC
Topic 195576
(moderation:
Yesterday I have build my new rig which should replace my current workhorse. The old one is a Q6600 @ 3.6GHz running for over 3 years now. The new one is a i7 2600K. Right now everything is on stock (3.4GHz) and it is tempting to overclock this beast but I would like to run some comparison tests before.
For the Global Correlation app the speed up is insane (for me). Even by using HT the runtime is lower (17k s) than the Q6600 (19k). I haven´t measured the power consumption so far but the cpu is totally cold under full load and the power should be significant lower than the 270W (cpu only, 500W with gpus) from the Q6600 .
Next runs will be without HT and than look how high the cpu clocks.
Sandy Blitz is here
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Very Nice !
Keep us informed on your overclocking )
Bill
Ok, power consumption @ 4GHz
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Ok, power consumption @ 4GHz is 130W, idle @ 60W. This includes a ATI HD3850. So far no need to increase the stock voltage (1.2V).
RE: Ok, power consumption @
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Very nice. I have heard of some people going as high as 5.1 GHz on air with the 2600k although that may be too extreme for 24/7 load depending on where the voltage and temps are.
RE: Ok, power consumption @
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Is that the power consumption for the full system at the wall socket? And running what load? 4x Einstein on nHT? 8x Einstein on HT? Something else?
And what motherboard do you have in there? It must be lower power than my X58 Extreme 3 or I don't think you could get a system idle down to 60W. My system idle is a bit over 100W with a Westmere E5620 at 1.15V and a graphics card I think lower power than your HD3850 (I only have 80 stream processors compared to your 320).
This is the power from the
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This is the power from the wall for the full system:
ASUS P8P67EVO
i7 2600K
2x2GB @1.6V
ATI HD 3850
WD 2.5" 500GB
Seasonic S12II 380W (80plus)
Load is 8x Einstein. Idle power is outstanding, even if you overclock the cpu.
8x Einstein @ 4GHz-> 130W; idle 60W
8x Einstein @ 4.6GHz-> 192W; idle 66W
I will test performance without HT the next days.
RE: This is the power from
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Wow. I've been thinking my next build--thinking summer 2011--needs to be Sandy Bridge and worrying about whether motherboards available will deliver the potential power savings.
Your solution sure looks a lot better than mine. Great.
First numbers without HT. i7
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First numbers without HT.
i7 2600K @ 4.6 GHz, 1600DDR3
4xEinstein (nHT) 8700s, 165W
8xEinstein (HT) 13400s, 192W
This is hardly a statistic just the first results.
I've got a stock i7 2600
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I've got a stock i7 2600 running DDR3 1333 CL9. With HT on an 8 Einstein tasks (a mix of GC and BRPS) it takes ~17150 s for each GC WU. The Gigabyte board measures power consumption of the CPU alone: maximum 66W with short fluctuations donwwards.
MrS
Scanning for our furry friends since Jan 2002
My board also shows 66W @
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My board also shows 66W @ 4GHz full load. Sounds reasonable because idle is 66W and 66W+(66W [CPU] /0.8 [PSU efficency])=149W and that is the value I see with my power meter.
For now I settle back with stock Vcore. Temperature is really a problem @ 4.6 GHz. I was hitting mid 70C @ 8x Einstein. I need a better cooler before I go higher. I am not afraid of voltage but of temperature.
May I ask what that system
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May I ask what that system cost to put together?
I just built an AMD Phenom II x6 which does 6 Einstein GC WUs in about 18,000 sec (no GPU). System has 8GB 1600MHz DDR3, 1.5 TB Barracuda for right around $700. Running full bore it is 186W (average over 10 days). It's running stock 3.2GHz
The Binary Pulsar search takes right around 60,000 sec (CPU).
Not a fan boy of either manufacturer but I will probably need another system in a month or so and I'm trying to decide between an I7 and another Phenom.
Thanks,
Joe