Originally posted by: the cobbler
Originally posted by: 1Dark1Sharigan1
I'm a newbie here but anyway, I've got a problem with my Neo4-F board posting with 3x HT AT ALL.
Okay, so I was sitting pretty happy with my Winnie at 2.5 Ghz (not bad for a winnie on air) but I saw that the Neo4-F was capable of pretty high FSB so I wondered how far I could push my CPU with a 20" fan blowing across my open-vent case.
However, any attempts to post with 3x HT enabled results in my system not posting. I've tried 200FSB to 300FSB and no attempts at any of those speeds would post with 3x HT. I've tried upping the NB voltage to 1.7 V but no luck. The thing is, my system can post at like 285+ FSB with 4x HT but with 3x, it can't at all.
I've tried this with 1.71 & 1.75 BIOS, both considered very good BIOS . . .
I'm out of ideas, so I was wonderin if any of y'all had any suggestions . . . would be much appreciated . . .
Yeah, your Winnie has the the "219 FSB bug" which varies a bit depending on the week it was made. the bug is related to the HTT multi at boot and you'll have to use a ClockGen startup file to set the FSB higher once Windows is loaded, no other way around it than to sell off the Winnie and buy a Venice or Opteron, etc. (which is what I did). This is all caused by the Winnies having basically a faulty memory controller, had the same exact bug on my VNF4Ultra.
It looks like yours is the "250FSB bug" at 3X HTT multi which is not uncommon. try booting >250FSB at 1XHTT mulit and 2xHTT multi and you might be able to, some people have no problem over 300FSB with Winchester cores as long as HTT multi is 1x or 2x.
there is no bios fix, the fix occurred when AMD revised the Winchester core's memory controller with the Venice. no bios, beta/mod/otherwise will fix the bug and increasing voltages will not help.
try using ClockGen in windows after doing all your OC math and setting voltages/dividers/etc. and you should have no problem with 320+FSB
I used a ClockGen startup file with my Winnie which allowed me to run 305x8=2440mhz
Without it, I would have been limited to an overclock of 219x10=2190mhz, no kidding.
best solution is to buy new CPU