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Need help OCing i7 860 4ghz

post #1 of 17
Thread Starter 
I overclocked my cpu from 3.36 to 4ghz
was just concerned about the 8C temp increase...

My computer specs are:

i7 860
with H50 cooler.
Mobo: Gigabyte P55A-UD4P v2 Bios (F13)
Memory: 4GB Corsair Dominator 8-8-8-24 1.65v


Idle Temps:
#0 42C
#1 37C
#2 43C
#3 37C

Max load from #0-3 67C, 61C, 64C, 64C

I used OCCT and got a CPU too Hot! Error with HT enabled after 1hr 21mins
Also ran it without HT enabled and had no errors for 2hrs

here's what I set in the Bios

CPU Clock Ratio - 20x
QPI Clock ratio - x32
Base clock (BCLK) - Enabled
BCLK Freq - 200
XMP - Disabled
System memory multi - 8.0
Cpu Clock drive - 800mV
PCI Express - 900mV
CPU Clock skew - 0ps

Intel T boost - Disabled
Cpu cores - ALL
Cpu M Threading - Enabled
CPU Enhanced Halt - disabled
c3/c6/c7 - Auto
CPU T Monitor - Auto
CPU Eist Function - Disabled
Bi Directional p. - Auto

Loadline Calibration - Disabled
CPU vcore - 1.275V
QPI vtt volts - Auto
PCH Core - Auto
CPU pll - Auto
Dram voltage - 1.6400v <-- (mobo doesn't have 1.65)
*The rest are on Auto*

Thanks in advance!
Edited by Yukyuklee - 12/28/10 at 12:44am
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post #2 of 17
hmm, the temp increase isnt abnormal for OCing. the thing that strikes me as odd is your cores have 6*C temp difference between cores. this indicates an uneven thermal compound or some other issue with the cooler. a 2-3*C temp difference would be normal, but 6 or 7*C difference is above normal. i would try re-seating your cooler and make sure you get an even application of thermal compound and make your when you mount the cooler, the screws are evenly tightened all the way around.

refer to the link in my sig for help on applying thermal compund in different patters for many types of cooler bases to get the best TIM (thermal interface material) application.
Edited by IntelConvert - 12/28/10 at 1:24am
    
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post #3 of 17
Thread Starter 
Thanks for the quick input I will redo my thermal and re-seat my cooler and see if I can get those to be about equal
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i7 860 Gigabyte P55A-UD4P EVGA GTX580 PhysX:EVGA GTX460 1GB SSC Corsair Dominator DDR3 4GB 
Hard DriveOSMonitorKeyboard
OCZ Vertex 2 60GB, WD Caviar Black 1TB Win7 Pro 64bit Asus VH236H Logitech G15 
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i7 860 Gigabyte P55A-UD4P EVGA GTX580 PhysX:EVGA GTX460 1GB SSC Corsair Dominator DDR3 4GB 
Hard DriveOSMonitorKeyboard
OCZ Vertex 2 60GB, WD Caviar Black 1TB Win7 Pro 64bit Asus VH236H Logitech G15 
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post #4 of 17
no problem, let us know how it goes
    
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post #5 of 17
Many i7's have big temp differences between cores, mine can be up to 8c difference. I wouldn't worry about it too much.

Those load temps are great with your H50. Is your ambient low? You should be able to go higher.

Don't know how you got a cpu too hot error though at those temps
 
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post #6 of 17
how can equally stressed cores with equal cooling capabilities be 8*C different? unless the cooling isnt equal or there is something different?

i7s are pretty robust when it comes to temps, if you see stuff nearing the 70s or above, thats when i would get nervous
    
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post #7 of 17
Quote:
Originally Posted by IntelConvert View Post
how can equally stressed cores with equal cooling capabilities be 8*C different? unless the cooling isnt equal or there is something different?
Don't know but I have had a couple of different coolers on my chip mounted several times and its always had this temp difference and I have seen a few others with the same issue with i7's. Weird (maybe the IHS is slightly bevelled or something).

Quote:
Originally Posted by IntelConvert View Post
i7s are pretty robust when it comes to temps, if you see stuff nearing the 70s or above, thats when i would get nervous
I suppose its down to personal preference what temps you're comfortable with. I don't mind mine hitting 80c under full stress conditions for short periods.
 
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CPUMotherboardGraphicsGraphics
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RAMHard DriveOptical DriveCooling
24GB Sniper/Vengeance 1600MHz (9-9-9-24, 2T) 1.60v 120GB SSD + 256GB SSD + 1TB HDD Pioneer 218L EK Supreme HF Plexi 
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post #8 of 17
Quote:
Originally Posted by flamin9_t00l View Post
Don't know but I have had a couple of different coolers on my chip mounted several times and its always had this temp difference and I have seen a few others with the same issue with i7's. Weird (maybe the IHS is slightly bevelled or something).



I suppose its down to personal preference what temps you're comfortable with. I don't mind mine hitting 80c under full stress conditions for short periods.
the IHS must be uneven. i dont usually recommend lapping, but it might actually make a difference in your case, its your call tho.

and ya, the i7 can run 80C, but i wouldnt recommend that to a newer OCer.
    
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post #9 of 17
Thread Starter 
Ok I reseated my H50 and redid the thermal paste....
right now HWMonitor says:

#0 - 40C
#1 - 35
#2 - 38
#3 - 34

Than I used Core Temp 0.99.8:

#0 - 37C
#1 - 33C
#2 - 36C
#3 - 32C

Am I still doing something wrong? I used Arctic Silver 5, spread with a old credit card I had. Maybe I'm screwing in the H50 unevenly?
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i7 860 Gigabyte P55A-UD4P EVGA GTX580 PhysX:EVGA GTX460 1GB SSC Corsair Dominator DDR3 4GB 
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OCZ Vertex 2 60GB, WD Caviar Black 1TB Win7 Pro 64bit Asus VH236H Logitech G15 
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CPUMotherboardGraphicsRAM
i7 860 Gigabyte P55A-UD4P EVGA GTX580 PhysX:EVGA GTX460 1GB SSC Corsair Dominator DDR3 4GB 
Hard DriveOSMonitorKeyboard
OCZ Vertex 2 60GB, WD Caviar Black 1TB Win7 Pro 64bit Asus VH236H Logitech G15 
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Corsair AX850 Nzxt Phantom (White) Logitech G5 Icemat 
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post #10 of 17
if its nothing you did, then your IHS must not be level. there isnt much you can do besides lapping, which can be bad for the CPU if youre not careful and not know what youre doing
    
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MonitorKeyboardPowerCase
LG 22" L226W (1680x1050) Logitech Standard w/ Media Controls Seasonic M12D 850w Coolermaster 690 II 
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Razer Naga Standard Mouse Pad Polk 2.1 
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CPUMotherboardGraphicsRAM
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Hard DriveOptical DriveCoolingOS
WD Blue 320gb Sony Optiarc DVDRW Corsair H50 Windows 7 Ultimate x64 
MonitorKeyboardPowerCase
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