What am I doing wrong

[robcy]

I am tring to overclock my Barton 2600+ and am failing miserable. Here are the tidbits
2600+ Barton 166x11.5 (locked)
DDR3200 OCZ Rev 2 2x256
Antec True Power 430w
Shuttle AN35L - Ultra

I tried 11.5x175 (2013mhz) @ 1.65vcore/2.5mem= all works great
I tried 11.5x180 (2070mhz) @ 1.65v/2.5m - 1.7v/2.5m - 1.7v/2.6m - 1.75v/2.6m and the results are the same. It runns windows okay, but once benchmarked I get a the blue screen. Am I overlooking something, a setting in bios. I have the worst luck when purchasing CPU's.

Oh yea the CPU temps are 46 idle, do not have load since it shuts off. At stock idle is 43-44, and load at 49.

 

[BlueWeasel]

Did you try going increasing the voltage to 1.80-1.85v?

 

[Duvie]

What ram timings and all ram related bios settings are you using???

I would jack the vdimm to 2.7v before I even started and definitely would not be afraid to go try up to 2.9v with that memory...

what you should do is run memtest and see if the memory is what is holding you back....

List the ram timings...I had memory that was well capable of cas 2 but it did not mean it could do cas 2,2,2,6 even if I was underclocked...

To be safe and try to isolate the cpu for the time being I would run cas 2.5,3,3,8 for now.....

Also that mobo undervolts severly if it is like my wifes...When I set 1.65v I actually only get 1.58v....So you may need to be running quite high in bios to get what you need...Verify this with some sort of monitoring program like speedfan...

 

[myocardia]

Rob, if upping your vcore in the bios doesn't help, try running your memory in single-channel, instead of dual-channel. Dual-chanel helps, but not nearly as much as a higher fsb, and alot of boards don't like high fsb's when running dual-channel.