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2 Weeks Ago
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#1 (permalink) | |||||||||||||
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Overclocker
 
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I7 Ram stability help
Sig isn't updated yet.. so I'll just say it here.
On my new rig, evga 4 way sli classified D0 i7 920 H20 cooled 2000mhz (rated) 8-8-8-21 Gskill perfect storm (6gb) I have been having an issue getting my ram stable at 2ghz when my cpu is running a large overclock. I have no issues getting cpu to 4.2 stable (21x multi) 201 bclk with my ram running slightly over 1600mhz at the above timings (Vdim 1.65v) When I bump the ram to 2000mhz however, It becomes very hard to stabilize. Vcore doesn't help.. I have tried raising VTT and Vdimm, however even large boosts ( like +350mV VTT and 1.85 Vdimm ) see linpack crashing (either hardfreeze or restart) after anywhere between 10 and 45 minutes. I have tried playing with Vcore and VTT switching frequencies, but raising them didn't help..
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2 Weeks Ago
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#2 (permalink) | ||||||||||||||
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WaterCooler
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A friend of mine bought 2000 MHz RAM, and found that it was binned so tightly it had absolutely no overhead. He could get it to work at 2000, but even 2010 was unstable.
With your BCLK at 201, what does that translate to for your RAM speed?
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2 Weeks Ago
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#3 (permalink) | |||||||||||||
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Overclocker
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2013, but as I've said, I've even tried giving the ram as much as 1.85 volts.
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