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OC no longer stable after changing motherboard and PSU - Page 2

post #11 of 12
It wont be the cpu.... I could only manage a 4.5ghz overclock with silly volts on my older board but i opted for a higher end new board and i can now overclock past 5ghz with much lower voltage.

It's swings and roundabouts i'm affraid and i think your old board was the better at the two for overclocking.
Chewy's Chomper
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel I7 6700k Asis Z170 Deluxe MSI GTX 1080 Gaming x 16GB Corsair vengence DDR4 3200 
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Chewy's Chomper
(14 items)
 
  
CPUMotherboardGraphicsRAM
Intel I7 6700k Asis Z170 Deluxe MSI GTX 1080 Gaming x 16GB Corsair vengence DDR4 3200 
Hard DriveCoolingOSMonitor
Samsung M2 256gb nvme Custom loop, 360+120 rads Windows 10 64bit Asus 28" MG28UQ 4K 
PowerCase
Seasonic X series 750w gold Corsair 400c 
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post #12 of 12
Thread Starter 
Quote:
Originally Posted by pnoozi View Post

I doubt the CPU has degraded.
Seems to me you should disable all power saving features and the like on the new motherboard. Also leave your memory timings at default (forcing stock timings should be fine too), and make sure memory is at or below stock speeds. With all that I am confident you should be able to return to 4GHz or close to it. If you can't quite reach 4GHz on the new board, it definitely could be a "margin of error" type issue. But even then you should still be able to get there again just by bumping the voltage as you said your previous OC was rock solid.

They are all disabled... And as I mentioned, I tried everything.
I always overclock by the same method: find VTT voltage for FSB, then find vcore and CPU clock, then fix RAM.
Quote:
Originally Posted by Chewy View Post

It wont be the cpu.... I could only manage a 4.5ghz overclock with silly volts on my older board but i opted for a higher end new board and i can now overclock past 5ghz with much lower voltage.
It's swings and roundabouts i'm affraid and i think your old board was the better at the two for overclocking.

Looks like it's the mobo, OK. I believe you. But how come?
As far as I'm concerned my VTT/QPI is inside my chip, and I'm basically only messing with VTT and Vcore and FSB. The only thing that is realated to the board is the FSB. But I found it to be stable at 2800mhz core and 200 FSB, which is more than enough for a 4ghz with 21multi x 190FSB.

Other than that.. Could be a problem with the board not feeding the CPU vry well with clean energy?
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