4800 X2 Overclocking Fun

[Pederv]

My 3800 X2 had an FSB that could go higher with no special tricks (225MHz), the 4800 X2 can't go past 214MHz. So my max overclock is 2568MHz, prime stable.
Odd thing about the NEO2, when I undervolt with CnQ enabled in the BIOS, the CPU will only go down a couple tenths no matter how far I take the voltage down (as long as it still boots).

 

[DrMrLordX]

That's pretty strange actually. I doubt many will comment on it based on the fact that the Neo2 is getting long in the tooth, but even still . . . makes you wonder why the board won't budge past 214 mhz FSB with the 4800+.

 

[cmrmrc]

you sure youve put in sata 3-4 cuz i remember that that board has sata1-2 not locked

 

[Pederv]

OK, I think that I can get a few more MHz out of this chip, 2.6GHz (222 X 12 @ Over VID 8.3%) Prime stable.

The Neo2 doesn't act the same as it did with the 3800 X2. When CnQ is enabled in the BIOS, I can set the VID to any voltage and it will show the change in the BIOS after a re-boot but when it boots into Windows it's always between 1.28 and 1.31 (equivalent of 1.35 in the VID). The BIOS reading will not go over 1.36 (equivalent of 1.4 in the VID), even when I set the VID to 1.475 (doesn't matter if CnQ is enabled or not).

The only way I've been able to increase the voltage above 1.36 is with the Over VID 5.5% (1.39 - 1.42) and Over VID 8.3% (1.42 - 1.46). I haven't tried the Over VID 10%.

Oh, one more thing, when I dropped the multiplier down to 11X in the BIOS, it still came up as 12X after Windows booted.

I'm running the 1.C BIOS.

Guess you can't take anything for granted.