P4s333 mb users - bios 1003 more stable than 1004c + question of ram voltage

[vspt]

Any P4S333 users flash their bios to 1004c and experience less stablity at overclocking than the 1003 bios? On 1003, I could do fsb 150/voltage 1.60 with over 4hrs of prime95 and not a hiccup. But when flashed to the newer 1004c, experience errors at around an hour. Needed to up the voltage to 1.625 for stability, but personally do not want to go that high.

I wanted the 4:5 memory divider on the 1004c , but might go back to 1003.

By the way, anyone know how harmful it is to up the voltage on the DDR jumpers from 2.5 to 2.7. Your input would be greatly appreciated.

My current rig uses a 1.6A and mushkin pc2100 high performance ram, in case anyone is wondering.

 

[Duvie]

I didn't notice any stability errors..same old asame old in terms of voltages at give mhz....

I believe 2.7v will be fine for memory...I haven't done it...haven't needed to yet...I have ran my memory at 390mhz fine but you are at 400mhz and that may be the limit before a volt mod is needed...

 

[exp]

No noticeable difference here.

 

[dbwillis]

I havent noticed any negative effects of the 1004c bios, I just updated 2 more today (also they were new 1.6a OC to 2.13 overclocks from get go) to the 1004c and they are running great.
I just last night got daring and changed my PC from:>

16x144fsb with DDR at 1:1 ratio, with cpu at 1.55v and ddr at 2.5v (ddr266mhz)
to
16x141fsb with DDR at 4:5 ratio, with cpu at 1.55v and ddr at 2.7v (ddr352mhz)

runs great and SiSoft burn in ran 417 times from the time I went to bed until I woke up with no problem/crashes

 

[dbwillis]

Im using 2 sticks of Crucial 256mb CL2.5 DDR also, the new ones I made today are only using 1 stick of Crucial 256mb CL2.5 each

 

[Regalk]

Is this the latest BIOS with the "C" since I downloaded the 1004 (NO C) and it works fine. Able to overclock to 2.3GHz quite easily. My Samsung PC2100 at 144FSB runs at 2.7v fairly reliably and stably.