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why is my 950 only stable at 4.2ghz with 1.4v?

post #1 of 10
Thread Starter 
ive been attempting to oc my i7 950 to 4.2ghz for a while now but can only get it stable at 1.4v and at 1.4v the temps are around mid 80s (which i dont really want). so what should i do to get it stable at under 1.4v?

multiplyer: 21x
base clock: 203mhz
hyperthreading: on
vcore: 1.4v
qpi: 1.3v
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first build
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post #2 of 10
Turn off HT, I found that to help a lot.
Neo Maki
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Neo Maki
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post #3 of 10
Every chip overclocks differently... Just because someone hits 4ghz at a lower voltage doesn't mean you will too. Also these CPUs can tolerate heat very much so, and mid 80s is completely fine and will not degrade the chip at all.
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Beast
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post #4 of 10
Quote:
Originally Posted by MiskatCitnamor View Post
Turn off HT, I found that to help a lot.
+1. Will reduce the heat.
post #5 of 10
As far as I know it will reduce heat immediately, but also allow him to reduce the voltage necessary for stability at the same bclk/multi.
Neo Maki
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Neo Maki
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post #6 of 10
Are you over clocking ram? If not try to playing with QPI. On my board I didn't even have to play with it. I manually set it to 1.20, vcores at 1.28 with HT on. But like others have said, all processors overclock a bit different.
post #7 of 10
Well if you want to get it stable with that clock at a lower voltage... then your only option is to turn HT off.

I recommend you go for 4.0-4.1Ghz, keep HT on (otherwise your i7 is as good as an i5) and have a maximum voltage of 1.375 Vcore.
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The Overlord
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Hard DriveHard DriveOSMonitor
3TB Apple Fusion Drive 4TB WD Elements External Drive Mac OS X 5120‑by‑2880, 10-bit IPS 
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Apple Magic Keyboard Apple Magic Trackpad 2, Razer Deathadder 2013 Bose Companion 2 Series iii 
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Hard DriveHard DriveHard DriveHard Drive
Samsung 840 Pro SSD 2 * 1TB WD Black 5 * 2TB Hitachi LaCie 1TB External HDD 
Optical DriveCoolingOSMonitor
LG BD Combo Corsair H70 Windows 8 64-bit HP ZR30W (2560*1600) 
KeyboardPowerCaseMouse
Logitech 920-000914 OCZ ZX 1250W CM 690 II Advanced Logitech G500 
Mouse PadAudioAudioAudio
Razer Goliathus Audez'e LCD-2 Schiit Lyr + NuForce HD DAC Blue Yeti Microphone 
AudioAudioOtherOther
Logitech G35 Altec Lansing 2.0 7 Scythe Ultra Kaze fans @ 3000rpm Scythe Kaze Fan controller 
Other
Logitech C900 Webcam 
CPUGraphicsRAMHard Drive
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post #8 of 10
1.4 isn't exactly Chernobyl in a box either. Then again though your sink is pretty capable it might be the underdog with your current temps. I agree with not dropping ht, as well as the reason.

Also, if you're just overclocking for the number then who cares what your temps are for the few hours you're going to be testing or maybe gaming. If you don't need ht in the applications you use- turn it off... Drop your voltage and save some heat. While you're at it go buy a giraffe and a moped and perhaps a few other items you have no use for.
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post #9 of 10
Try x23 multi
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post #10 of 10
You'll never reach mid 80's temps / full loads during regular usage. But to be on the safe side that's where people generally draw the line.
200mhz is a small difference but a big toll on voltage/temps. I would keep HT on, but go for 4.0 ghz stable instead.
x58
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x58
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