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Old March 11, 2010, 12:00 PM
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Default 920 D0 stepping overclocking

Looking for some thoughts on this topic. My 920 D0 CPU is running @ 3.8 ghz at a voltage setting of 1.17. I changed no other setting in the bios other than 1.3 V for the IOH(heard you needed to do that).
The cpu runs folding@home 24/7 and has a loaded temp of 48 C on high end air cooling. I'm looking for other peoples thoughts on the topic of clocking it higher. Looking for results with other peoples overclocking...and it has to be 24/7 stable loaded.
The reason behind the question is the low voltage and low temps.....makes me think there is more head room.....but I would still like to hear what other people have achieved with D0 stepping CPUs before I run off and start cranking up voltages.
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Old March 11, 2010, 12:35 PM
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I've reached 4.4 but I am using TEC cooling but 3.8 at that voltage is very respectable. Typically people expect to reach 4 nowadays with good cooling on those DO steppings but that is usually with more voltage than you have. If I were you and using the CPU for folding, I would leave it right there because its a good 24/7 OC. But if you're just folding on Your GPU. I would see if bumping the voltage to 1.25 did for your max stable.
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Old March 11, 2010, 12:56 PM
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which board are you using Wi-Fuzzy? that is a very nice OC!
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Old March 11, 2010, 01:50 PM
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Quote:
Originally Posted by Babrbarossa View Post
I've reached 4.4 but I am using TEC cooling but 3.8 at that voltage is very respectable. Typically people expect to reach 4 nowadays with good cooling on those DO steppings but that is usually with more voltage than you have. If I were you and using the CPU for folding, I would leave it right there because its a good 24/7 OC. But if you're just folding on Your GPU. I would see if bumping the voltage to 1.25 did for your max stable.
Folding 24/7 on the CPU...this comp has a $28 video card in it If I do try 1.25v I'll post my results
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Old March 11, 2010, 01:51 PM
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Quote:
Originally Posted by ADay2Long View Post
which board are you using Wi-Fuzzy? that is a very nice OC!
The cheapest one I could find, MSI X58M. Seems solid so far. You do have to "manufacture" a chipset cooler though....a old cpu fan works well.
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Old March 11, 2010, 02:26 PM
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Also...after reading some threads here. I think I may need to change some BIOS settings. I have C1E enabled. I always wondered why my voltages always bounced around between 1.6 and 1.7v...I think I now know why....any thoughts on dissableing this setting?
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Old March 11, 2010, 06:24 PM
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I figured I would try cranking it up a little....ooops...bad idea. Spent 1/2 hour trying to get it to fold again. i will try again...but I'll waite till it is done a bigadv, not mess with it when it is 85% done.
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Old April 6, 2010, 10:47 AM
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I've got 4.0ghz on my D0 920 with 1.29v, which I think is pretty good. Passed a 24 hour prime95 blend test. Wondering why/where you heard to have the IOH at 1.3v? Mines at 1.1
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Old April 26, 2010, 04:25 PM
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Quote:
Originally Posted by rogueblade View Post
I've got 4.0ghz on my D0 920 with 1.29v, which I think is pretty good. Passed a 24 hour prime95 blend test. Wondering why/where you heard to have the IOH at 1.3v? Mines at 1.1
People tend to recommend intel burn test instead of prim95 for testing i7 stability. Apparently, it loads it a lot more and your 24hr prime95 settings could be unstable on IBT. For 1.29 though, you could probably push it to 4.1-4.2.
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Old April 30, 2010, 12:18 PM
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My 920 D0 is at 21 x 191 (4 Ghz) using 1.21 vcore. Asus P6X58D - Premium mobo, and CM Hyper 212+ cooler. Not the best cooler out there, and my load temps can get into the mid 70's. Hyperthreading is enabled, could probably shed some heat during Prime95 if I disabled Hyperthreading, but I figure what the heck, it is stable. I'll probably throw more cheap fans into the case to improve the thermals. Lots of good O/C tips for the 920 here:

--The Asus P6X58D Premium & E Thread-- - Overclock.net - Overclocking.net

See second post by Xmisery.
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