P5B vanilla stable at FSB 400?

[wrathoutside]

System spec:
P5B "vanilla" (that is non deluxe)
E6600
G.skill PC6400 4-4-4-12, 2GB
Antec Sonata Piano II, Antec 450W

Cooling: 2x120mm, Arctic Cooling Freezer 7

Problem:
I just can't seem to set FSB 400MHz and get the system stable with multiplier 8 --> 3200MHz. I've raised the vcore to 1.375 in BIOS, which gives me 1.32V in CPU-z idle (49-50C). This value drops to ~1.26V when put under stress in TAT, before it shuts down (60C and raising slowly). If vcore is raised even more the temperature raises to above 51C idle, and most likely reaches 65C under load; this is too high for me.
The memory is stable at 832MHz 4-4-4-12@2.0V in 2x32M superPI, I've tried 400FSB with 5-5-5-15@2.0V 800MHz just to be sure it's not the memory causing the system to get unstable.

Questions:
1. Have anyone successfully raised the FSB above 400MHz on a P5B board within reasonable temperatures? If yes: with which settings? (also, with which cooling?)
2. What should FSB Termination Voltage be set to? (i've tried Auto, 1.3 and 1.4V)
2. Is my cooler too weak? Is that the problem?
3. Is the PSU to blame? I mean, the voltage drop is probably what's causing the shutdown?

Please note that with P5B vanilla you can't change vNB, vSB or vSB. Only vcore and vFSB can be set, aswell as vdimm.

Thanks in advanve

 

[BUFF]

try setting a value over 400fsb as I believe that's where 965 typically switches to the 1333 strap which can make things easier for the board.

 

[wrathoutside]

Yeah, I noticed that once and tried FSB 401MHz, which solved the mentioned problem. Still not stable.

 

[Grated]

the P5B vanilla isn't the best board to overclock with...

 

[rwaritsdario]

I've raised the vcore to 1.375 in BIOS, which gives me 1.32V in CPU-z idle (49-50C). This value drops to ~1.26V when put under stress in TAT, before it shuts down (60C and raising slowly).

Dont use CPU-Z for measuring vcore as it is highly unaccurate. Use TAT and CoreTemp to monitor temps before it shuts down.

I believe the P5B vanilla utterly lacks of the 1333Mhz strap at which is should switch at ~400FSB, but feel proud that you managed to top the board.