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Old 9th Oct 2012, 19:37   #41
Ben Lamb
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Quote:
Originally Posted by Slowlemon View Post
Hi Coolamasta

I have lost two 8101s as early unit end so I think my setup is not 100% stable at 104MHz. For now I have backed it down to 102MHz. You can adjust Vcore and VSA in the BIOS, I have played around with the voltages a bit but I have not done any proper testing. More work is needed.
I have had similar problems - if you are loosing the units when they end and are getting ready for upload then you need a small core voltage tweak eg. +0.02v. Linux runs the cpus at high turbo multis eg. 28x when running one or two cores which you will be at unit end when the work is done. This spike in frequency can cause a crash if core voltage is too low. If you are getting random restarts when the cpu is at full load then memory voltage can be the culprit and a small +0.02v bump can help here, try to run all the memory at the same voltage reported by the bios monitor which may mean tweaking one bank a bit higher than the other. Increasing VSA can increase unstability and I find it runs well at a low 1.010 to 1.020v.

We must have 104mhz !!!!
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Old 1st Nov 2012, 17:01   #42
sean86
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What coolers are you using? I'm building a rig similar and was looking at the corsiar h80. can you recommend any others?

Thanks
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Old 10th Nov 2012, 11:01   #43
Tattysnuc
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It's no wonder your Nas build is coming along so slowly:

http://forums.overclockers.co.uk/sho...8453923&page=2

didn;t realise you had two builds on the go simultaneously!!!

You mentioned you got 178000 out of the rig... What's the PPD and PPD per watt settled out at over a longer period? I'm guessing you've got other rigs folding as well as this...?
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