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Thread: Death Star Build Log (name explained below) |
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Thread Status: Active Total posts in this thread: 65
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Mamajuanauk
Master Cruncher United Kingdom Joined: Dec 15, 2012 Post Count: 1900 Status: Offline Project Badges: 
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Now, that's better O/C'd to 3.5 just by changing the CPU frequancy the result is a good start. CPU temps have gone up, but will be looking at moving the pc to a cooler location before increasing any more...
----------------------------------------Thu 26 Dec 2013 12:51:10 GMT | | Benchmark results: Edit - added benchmark results
Mamajuanauk is the Name! Crunching is the Game!
----------------------------------------  [Edit 1 times, last edit by Mamajuanauk at Dec 26, 2013 1:03:26 PM] |
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widdershins
Veteran Cruncher Scotland Joined: Apr 30, 2007 Post Count: 677 Status: Offline Project Badges:
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Do you have one of those little plug in power meters? What's the power consumption like? How many WCG points per watt are you getting?
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Mamajuanauk
Master Cruncher United Kingdom Joined: Dec 15, 2012 Post Count: 1900 Status: Offline Project Badges:
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Do you have one of those little plug in power meters? What's the power consumption like? How many WCG points per watt are you getting? As I run my systems off UPS' I can't easily tell what a specific machine is using. However, I will be looking at moving this off the UPS for exactly this reason - to look at consumption - and report back during the weekend, most likely on Sunday...
Mamajuanauk is the Name! Crunching is the Game!
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Mamajuanauk
Master Cruncher United Kingdom Joined: Dec 15, 2012 Post Count: 1900 Status: Offline Project Badges:
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Do you have one of those little plug in power meters? What's the power consumption like? How many WCG points per watt are you getting? I've managed to get a chance to check the power consumption of this beast!Running the default CPU speed of 2.67 it uses around 270 watts Running o/c'd to 3.5 it uses around 445 watts Running the default CPU speed returns around 50k ppd I have no stats on the returns for o/c'd running at this stage Can someone do the sums please, I have no idea how to work out the PPW from the above, let me know if you need any other info...
Mamajuanauk is the Name! Crunching is the Game!
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ryan222h
Senior Cruncher Joined: Sep 4, 2006 Post Count: 425 Status: Offline |
Can someone do the sums please, I have no idea how to work out the PPW from the above, let me know if you need any other info... Its as easy as 50,000 ppd /270 watt = 185 points per watt. If your overclock is 100% efficient it will yield 3.5ghz/2.67 ghz = 1.31 X 50,000ppd = 65,500 points per day. 65,500 ppd / 445 watts = 147 points per watt. So its more efficient to leave it at stock speeds but the most work gets done with the overclock. Hope this helps!  [Edit 1 times, last edit by ryan222h at Dec 28, 2013 7:18:43 PM] |
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Mamajuanauk
Master Cruncher United Kingdom Joined: Dec 15, 2012 Post Count: 1900 Status: Offline Project Badges:
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Can someone do the sums please, I have no idea how to work out the PPW from the above, let me know if you need any other info... Its as easy as 50,000 ppd /270 watt = 185 points per watt. If your overclock is 100% efficient it will yield 3.5ghz/2.67 ghz = 1.31 X 50,000ppd = 65,500 points per day. 65,500 ppd / 445 watts = 147 points per watt. So its more efficient to leave it at stock speeds but the most work gets done with the overclock. Hope this helps! I was thinking more complicated, like working out how many watts or Kw's per day then divide by the ppd. you way is way easier... I'm going to look at other o/c speeds to see if I can find a happy medium i.e a better balance of ppd/watts as MCM does not like this system, some take almost 20 hours to complete. Thanks again
Mamajuanauk is the Name! Crunching is the Game!
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captainjack
Advanced Cruncher Joined: Apr 14, 2008 Post Count: 147 Status: Offline Project Badges: 
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Mamajuanauk,
In the first post in this thread, you wrote: Then installed (in this order) 2 x CPU's - Xeon X5650 @ 2.67GHz 2 x 8Gb RAM (2x4 in each bank, one bank for each CPU) 2 H100's for cooling the CPU's 1 x HD7770 GPU If I am reading this correctly, it says that you installed 2 sticks of memory for each CPU. If that is true, you might want to know that the Xeon processor that you are using supports triple channel memory. Meaning that it will run better if you have 3 identical sticks of memory for each CPU. Hope that helps, captainjack |
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Mamajuanauk
Master Cruncher United Kingdom Joined: Dec 15, 2012 Post Count: 1900 Status: Offline Project Badges:
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Mamajuanauk, Many thanks Captainjack, yes, that is correct. I'll give 3 sticks per bank/CPU a try.In the first post in this thread, you wrote: Then installed (in this order) 2 x CPU's - Xeon X5650 @ 2.67GHz 2 x 8Gb RAM (2x4 in each bank, one bank for each CPU) 2 H100's for cooling the CPU's 1 x HD7770 GPU If I am reading this correctly, it says that you installed 2 sticks of memory for each CPU. If that is true, you might want to know that the Xeon processor that you are using supports triple channel memory. Meaning that it will run better if you have 3 identical sticks of memory for each CPU. Hope that helps, captainjack And report back...
Mamajuanauk is the Name! Crunching is the Game!
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widdershins
Veteran Cruncher Scotland Joined: Apr 30, 2007 Post Count: 677 Status: Offline Project Badges:
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Can someone do the sums please, I have no idea how to work out the PPW from the above, let me know if you need any other info... Its as easy as 50,000 ppd /270 watt = 185 points per watt. If your overclock is 100% efficient it will yield 3.5ghz/2.67 ghz = 1.31 X 50,000ppd = 65,500 points per day. 65,500 ppd / 445 watts = 147 points per watt. So its more efficient to leave it at stock speeds but the most work gets done with the overclock. Hope this helps! Well to be more accurate you'd need to divide by 24 because it's 50,000ppd and the power consumption is 270w/h so actual figures are 7.71 points per w/h. Assuming 65,500 ppd @445w/h = 6.13 ppw/h So now, if you need to, you can multiply the figures by 1,000 to get the points per KW/hr and see how much your crunching is costing in your electricity bill. My plug in power meter allows me to enter the cost of electricity and it works it out but yours may be different. Not bad figures for a complete system though. From a cost effectiveness POV it'd appear OC'ing isn't worth it due to the increase in energy use being greater than the increase in points. To put this in perspective though, I got around 12 ppw/h from a stripped down xeon dual proc server with no oc. But that had no HDD, and no graphics card, purely a test to see how efficient it could possibly be. |
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Mamajuanauk
Master Cruncher United Kingdom Joined: Dec 15, 2012 Post Count: 1900 Status: Offline Project Badges:
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Can someone do the sums please, I have no idea how to work out the PPW from the above, let me know if you need any other info... Its as easy as 50,000 ppd /270 watt = 185 points per watt. If your overclock is 100% efficient it will yield 3.5ghz/2.67 ghz = 1.31 X 50,000ppd = 65,500 points per day. 65,500 ppd / 445 watts = 147 points per watt. So its more efficient to leave it at stock speeds but the most work gets done with the overclock. Hope this helps! Well to be more accurate you'd need to divide by 24 because it's 50,000ppd and the power consumption is 270w/h so actual figures are 7.71 points per w/h. Assuming 65,500 ppd @445w/h = 6.13 ppw/h So now, if you need to, you can multiply the figures by 1,000 to get the points per KW/hr and see how much your crunching is costing in your electricity bill. My plug in power meter allows me to enter the cost of electricity and it works it out but yours may be different. Not bad figures for a complete system though. From a cost effectiveness POV it'd appear OC'ing isn't worth it due to the increase in energy use being greater than the increase in points. To put this in perspective though, I got around 12 ppw/h from a stripped down xeon dual proc server with no oc. But that had no HDD, and no graphics card, purely a test to see how efficient it could possibly be. It would be interesting to see how these numbers compare to other crunching machines...
Mamajuanauk is the Name! Crunching is the Game!
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