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5820k 4.5 ghz under 1.3 vcore

post #1 of 5
Thread Starter 
hi,

first, sorry, english isn't my native language.

Pc: MSI x99 plus(5820k), 16 go 2133 dual , 1000 watth cooler master m2, r9 290 (crossfire) 4 go: corsaire H110


i can't be stable a 4.5 ghz

My result (2.000V input voltage) realbench (4.5 ghz)
1.225 volts, don't boot.
1.250 volts, crash
1.275 volts, crash after 4 minutes
1.300 volts, crash after 55 minutes
1.325 volts crash after 3 hour 58 minutes.
1.335 volts, stable

My question is : how to be stable at 4.5 ghz with 1.3 volts or less,
post #2 of 5
All CPU's are different. Even the same ones. It's a gamble, really. One CPU might be able to hit X GHz at X voltage with no problem but another CPU of the same exact model might not. If your CPU can't remain stable at the lower voltage setting, don't worry about it. It's probably nothing you're doing wrong.
post #3 of 5
Thread Starter 
thx for your answer

i must have one of the worst clocker (if not the worst), almost all haswell can clock to 4.5 ghz and higher(even i5 4690K can do better than my cpu)

even my old i7 2600k was better, (4.5 ghz for 1.315 volt)

i think the wisest choise i have is to stay at 4.4 ghz and 1.285V(stable even with prime 95 AVX2)
post #4 of 5
Yeah, you can't decide what minimum voltage to run at which frequency. It's chip dependent.

There can be a lot of variance between chips, my first 5960X could run only 4.0 GHz at 1.33 V in AVX2 tests. New one does 4.1 at 1.175 V.
post #5 of 5
Thread Starter 
i didn't know difference was that huge, almost 1 ghz between the worst and the best cpu, (4.0 ghz and 5 ghz)
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