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Safe Voltage for i7-2600K?

post #1 of 43
Thread Starter 
Hey guys,

I got my i7-2600k clocked to 4.7 Ghz with stable temps, but the voltage thing is bugging me. It's currently set to scale with CPU load via the bios, but when I put some load on it it gets petty high. Around 1.5-1.6v. Is this fine or too high? Anyone know a safe max? Also, is it better for a manual fixed voltage?

Thanks.
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post #2 of 43
It's too high for 4.7GHz imho. What are your temps? I guess as long as your temps stay below 80C then it should be fine. The absolute max safe voltage is 1.55V but I would be wary running it at that 24/7 (for benching it's ok). I personally think 1.5V is absolute max.

To give you a perspective I run my chip at 4.4GHz HT On with 1.275V. My chip can also do 4.2GHz at 1.2V, 4.8GHz at 1.36V, and 5GHz at 1.44V all with HT On. However, I do not need anymore then 4.4GHz for 24/7 use. However, once I get better cooling I will definitely be running 5GHz 24/7 for bigadv folding.
Edited by Aznboy1993 - 5/19/11 at 9:07pm
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post #3 of 43
i have heard the 1.5 is the top i think... any higher can cause damage
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post #4 of 43
1.5v - 1.6v is too much for a 32nm chip for 24/7, and also probably a lot higher than you need it for 4.7ghz. Just manually set the voltage and run LinX or prime95 to find out what you're stable at.
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post #5 of 43
Thread Starter 
Alright, so I set the voltage down to 1.4. Ran LinX for 20 minutes and everything was fine. I think my temps may have even went down. Now, should I try and go for a lower voltage?

settingsp.png
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My Rig
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CPUMotherboardGraphicsRAM
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post #6 of 43
You may as well keep lowering it until it becomes unstable. Then put it back up 1 notch.

That way you get the best voltage for the frequency available. It also means less heat.
post #7 of 43
Mine ran stable @ 1.312v - 4.7ghz so try lowering it more. That's still high but we all know that every cpu chip is different.
post #8 of 43
Thread Starter 
Just crashed after about 8 minutes of stress testing @ 1.375...Trying 1.39 now.
My Rig
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Hard DriveOptical DriveOSPower
Samsung EVO 840x2 Raid 0 Asus 24x DVD-RW Windows 10 Professional 64-bit Corsair AX860i 
Case
Cooler Master HAF 922 
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My Rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7-2600K 4.4Ghz Asus P8P67 Pro MSI Twin FrozR III GTX 570 PE 16GB G.Skill Ripjaw X 1600Mhz DDR3 
Hard DriveOptical DriveOSPower
Samsung EVO 840x2 Raid 0 Asus 24x DVD-RW Windows 10 Professional 64-bit Corsair AX860i 
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Cooler Master HAF 922 
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post #9 of 43
I'd say don't go past 1.4v for 24/7 overclock (maybe slightly more if it's required).
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post #10 of 43
Thread Starter 
Seems to be stable at 1.39. Guess I'll stay at that. Thanks.

Actually scratch that, just got a BSOD at 1.39...*sigh*. I must have got a crappy chip.
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Hard DriveOptical DriveOSPower
Samsung EVO 840x2 Raid 0 Asus 24x DVD-RW Windows 10 Professional 64-bit Corsair AX860i 
Case
Cooler Master HAF 922 
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My Rig
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CPUMotherboardGraphicsRAM
i7-2600K 4.4Ghz Asus P8P67 Pro MSI Twin FrozR III GTX 570 PE 16GB G.Skill Ripjaw X 1600Mhz DDR3 
Hard DriveOptical DriveOSPower
Samsung EVO 840x2 Raid 0 Asus 24x DVD-RW Windows 10 Professional 64-bit Corsair AX860i 
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Cooler Master HAF 922 
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