Please Help Overcome 370FSB Wall
Been following this thread (bud didn't read it all) since I bought a P5W 1.5 years ago, and only recently had done all the cooling mods, and thought that I could hit 3.3GHz easy, but to my surprise I can't get to 370MHz fsb with any ammount of voltage. The system will post, but windows won't boot.
Also very interesting is that when I get close to 370fsb, bios and windows only detect 1 core (CPU-z and all other software report only 1 core)
My settings:
Ram divider is 1:2, voltage 2.0, timings set to: configure by SPD
Hyper Link Disabled as well as all other auto overclocking features
All CPU thermal features set to disabled
From here I just bump the fsb/vcore to get a stable system:
350Mhz @ 1.4vcore = OK
360Mhz @ 1.42vcore = OK
365Mhz @ 1.42vcore = windows booted OK, 1 core detected :eek: , stopped Orthos after 30min
370Mhz @ all the way up to 1.51Vcore, bumped MCH, ICH and FSB termination one step above default, also tried 2.1v memory = Post OK, BSOD on windows boot
I am very disappointed, I spent the last 3 days hacking and sawing custom heatsinks for all the MOSFETs around the cpu, also replaced the northbridge cooler with a Zalman one, and installed 3 12cm Nexus fans blowing quite a lot of air. Also replaced everything with AS5. All temps have dropped, and the heatsinks on the MOSFETs that are located under the heatpipe on a stock mobo, and above the cpu socket, get quite hot (~42C measured with a thermocouple), which indicates a good thermal conductivity, and these MOSFETs didn't have any cooling from the factory :shrug:
The only part I didn't give proper attention is the southbridge (I couldn't get the heatsink off to lap it, considering that I replaced the thermal paste to AS5 3 weeks ago :shrug: It somehow glued together... :shrug: )
Also before all of my mods I had a chance to switch to a brand new rev 1.04g board, so I did. The BIOS version is 2206
There are so many good people on this thread, so I hope you can give some hints on what is causing the problem, because I really wanted to get 3.33GHz stable after all the effort I put in...
More details on my rig are in my signature...
Any advice appreciated!