I Can Not Over Clock

[Kracko]

My system specs are listed in my sig. The problem is that I can not over clock this thing. Even when I use the BIOS setting to just go 5% OC it won't boot. I used all of the auto settings. Any clues as to what it can be?

Note: I just switched over from an MSI Neo-FIS2R motherboard and I could overclock but only to about 3.01 Ghz and only for a short time so I'm suspecting that it's something in my system. Problem is I'm not sure which componenet.

 

[FullRoast]

If it's not too much of a problem, you could simplify your system by removing the Audigy card, optical drives, etc. and see if a minimal system will overclocks better. Your memory looks good. I haven't overclocked any Prescotts, but it is possible your CPU just doesn't overclock well.

 

[Acanthus]

temps?

 

[Kracko]

Originally posted by: Acanthus
temps?

Since switching to the Antec case and Asus board, my temps have dropped about 15 degrees F. When idling it use to run at 121 now it runs at 106.

 

[Kracko]

One more thing. I was able to kick the FSB up to 205 earlier but when I tried to bump it to 210 it would not boot.

 

[Acanthus]

Originally posted by: Kracko

Originally posted by: Acanthus
temps?

Since switching to the Antec case and Asus board, my temps have dropped about 15 degrees F. When idling it use to run at 121 now it runs at 106.

106? that sounds extremely low, i only get 98f idle on a 2.6C with a swiftech MCX4000+11k rpm fan.

 

[Kracko]

Yep 106. Sometimes even 104. That's what the motherboard is telling me when I use Speedfan or AsusPost.

 

[SickBeast]

Originally posted by: Kracko
One more thing. I was able to kick the FSB up to 205 earlier but when I tried to bump it to 210 it would not boot.

What are your RAM timings like? You could always try running with a 5:4 divider for the time being to see if that solves the problem. Either your board can't handle high FSB's or your memory isn't up to the task from the sounds of it. Most 2.8E's should be able to hit 3.5ghz or so AFAIK. Since your temps are good it tells me it's not the CPU that's the problem.

 

[iwantanewcomputer]

standard overclocking procedures:

1)find out your max cpu speed
set the mem divider low like 1:1 so memory won't be overclocked
increase the front side bus until it is unstable (test stability using some kind of benchmark)
raise the voltage to the next higher setting and go back to the fsb step (don't keep raising the
voltage if the temps skyrocket or if it doesn't help, see what other prescott users have)
the max cpu speed is whatever you get it stable at. (fsb*cpu multiplier)
2)find your max memory speed
set the default mobo settings (2:1 mem divider, 200 fsb) then set the cpu multiplier way down so it
won't hold you back(this may be something like cpu speed in the bios)
increase the fsb until it is unstable
increase vdimm (the memory voltage) and go back to the fsb step
try playing with the latency timings (increase them) to see if that helps
max mem speed = whatever fsb you can get *2 cause it's ddr
3) you can also try finding your max fsb by setting the cpu and ram multipliers lower
find a combination that gives you the best settings, may need to use 5:3 memory divider, high
latencies etc.

happy trails buckarroo.