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Need help with i7 860 overclock

post #1 of 3
Thread Starter 
Hi, I'm new to the forum, and relatively new to overclocking, tho I do have some experience.

I'm trying to overclock my i7 860 and I have an asrock motherboard. Right now I'm having it tested in prime95 with these settings:

3,9 ghz, 195 x 20
1,35 V

And here are the settings I dont really understand, copied from BIOS:

DRAM voltage: 1,657 V (set to auto)
VTT voltage: 1,219V (set to 1,204V)
PCH voltage: 1,079V (set to auto)
CPU PLL voltage: 1,053V (set to 1,903V)

What other settings should I look into?

So far its holding on ok, with max 75 degrees C at prime 95 stress test.

Is there any way I can improve this? I cant seem to hit 4 ghz. When seting it up in BIOS and after the restart, computer just hangs right after and not even the monitor turns on.

Any ideas?

Btw HT is off.
post #2 of 3
Few things, you wont have uncore, you should still have a QPI link speed however. Set that to it's lowest numerical value.

I wouldn't fiddle with the CPU PLL, I'd leave that at 1.8v and change it later if you're still getting issues.

Your CPU core ratio can go up, I would expect 21 x 191 to perform better, odd multipliers tend to produce more stable overclocks for i7s (apparently) and you'll be running a slower bus speed which wont hurt.



I cant help but notice however, you didn't mention RAM, what setting are you using for that?
    
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e5645 @ 4.2Ghz P6X58D-E 5450 x2 6Gb Corsair Dominator 1600 
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post #3 of 3
1.35v seems like a whole lot for 3.9ghz
    
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CPUMotherboardGraphicsRAM
i7 2600k 5000mhz(so far) ASUS MAXIMUS IV EXTREME msi 6970 and 2 6950's Mushkin Enhanced Blackline 2133mhz 
Hard DriveOptical DriveOSMonitor
Force GT(os) M4 64gb(games) f3 1tb(other) Samsung Windows 7 64bit Samsung BX2450 
KeyboardPowerCaseMouse
Black widow XFX ProSeries 1050W PSU 80+Gold  Corsair 700D Deathadder 
Mouse Pad
nope! 
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Reply
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