I've had my Athlon 955BE for almost 2 yrs now and have been running it at a mild overclock of 3.4ghz, but recently I've been trying to see how far I could push the chip.
I'm able to achieve a 100% stable 18.5x multiplier, giving me 3.7ghz on stock voltages with no issues. Temps are in the low 30's at idle and mid-high 50's deep into Prime95.
However, when I go for 3.8ghz, I'm running into serious issues. I get BSOD almost immediately on stock voltage. Increasing the voltage allows me to boot into Windows, however running a Prime95 results in a BSOD within a minute or two. I've attempted a voltage as high as 1.45v
I realize several people with this CPUs have to increase the voltages beyond 1.45v to achieve a stable 3.8ghz overclock, but it seems odd to me that my I would have to increase the voltage so much over stock, when stock is fine at 3.7ghz.
Is that as unusual as I think it is? Is there something else I should be looking at? Or is 3.7ghz just the logical place for my particular CPU to end up?
I would keep an eye on the temps and see if it crashes at the same temp multiple times. Some of these chips just don't run well overvolted past a certain temp. Mine has shown me that many times. I've settled on 3.8ghz as the best OC with my cheap/quiet heatsink.
I can run the NB @ 2.6ghz and 1.25volts with the cores at 3.8ghz and 1.38volts. The HT doesn't like going above 2.2ghz even with increased voltage. This is on a 890fx mobo with good VRM (very little vdroop, if any).