FSB OC Stuck

[Carter54]

I cant seem to get my FSB stable on anything past 1500.

I can boot up to 1680 right now with current settings but it fails blend immediately.

CPU multi 7

Vcore 1.45
VDIMM auto
1.2ht 1.5
NB 1.5
SB 1.55
CPU VTT 1.3

memory is running 1:2 ratio to try and figure out FSB limitations at 4-4-4-12 timings. IE 1600 FSB = 400 ram frequency.

My voltage are extremely high already and I know I cant move VTT or SB any higher with system crash and bios resetting. I have had my processor stable at 3.5ghz with a 10X multi on 1400 FSB with 1.45 vcore so I know my vcore is fine.

Do I dare to push my NB or 1.2HT and higher?

My temps are fine and its winter here so room ambient is 20C and I have a fluke temp probe on my NB which has an after market TT cooler and it neve exceeds 38C. SB and Ram are warm to the touch but much cooler when probed than the NB.

Any suggestion on what I might need for stability or am I stuck at 1500 fsb?

thanks Carter

 

[crashthenet44]

Why are you leaving VDIMM on auto and setting it manually?

 

[Carter54]

Why are you leaving VDIMM on auto and setting it manually?

Auto set the VDIMM to 1.8 which is all I need for 4-4-4-12-2t @ 400 MHZ no sence loading up the voltage on the ram since it is so far underclocked.