Just got my new Opty 144, CAB2E stepping (0546 FPMW, I think). I was happy when I read about how well these have been doing around the forums - 2.7 GHz and up. So far I haven't been able to get mine stable at 2.4! Here's the rig:
MSI Neo2 Platinum
Opty 144 w/ Zalman CNPS-7000Cu
OCZ 2x512 PC3500EB
Radeon 9800 Pro 128 MB
2 Seagate HDDs (1 PATA, 1 SATA)
Antec 480 W PS (not sure, but a TruPower model I think)
Anyway, the highest I've been able to run stable so far is 260x9=2.34 GHz at 1.35 V. It's nice and Prime95 stable, with load temps about 50 C or so. However, nothing seems to make it go any higher - it locks up instantly when I use ClockGen to up the HTT to 265. I've tried using higher voltages, up to 1.5 V with absolutely no effect. I'm running my memory on a 100 divider right now, so I know it's not having any problems at 130 MHz. I'm pretty sure the mobo isn't the problem, either - I'm running nice and stable right now at 310x7, so it seems like I should be able to go a lot higher than 260.
Did I just get a real dud of a CPU, or is there something else that could be limiting me? I know my -7000Cu isn't the best cooling available, but my temps still aren't all that high. What about my PSU? One thing I notice is that the CPU voltage seems to fluctuate a bit in CPU-Z when running Prime95. It also seems to be a bit lower than specified. If it's set to 1.45 V, CPU-Z might show 1.4 V , plus or minus about .12 V. That doesn't seem very good to me. I also don't seem to be able to get much higher than 1.4 V - even if I set it to 1.5 V, it doesn't read much above 1.4 V. Is it possible that my PSU is fluctuating too much, and that's causing my OC trouble? Is there anything else I can do to examine this? Everest and the MSI utility agree on that CPU voltage, BTW.
Are there any other possible culprits I'm overlooking? Any help would be greatly appreciated. I'd really like to be able to run 310x9 on this sucker for a healthy 2.79 GHz.
MSI Neo2 Platinum
Opty 144 w/ Zalman CNPS-7000Cu
OCZ 2x512 PC3500EB
Radeon 9800 Pro 128 MB
2 Seagate HDDs (1 PATA, 1 SATA)
Antec 480 W PS (not sure, but a TruPower model I think)
Anyway, the highest I've been able to run stable so far is 260x9=2.34 GHz at 1.35 V. It's nice and Prime95 stable, with load temps about 50 C or so. However, nothing seems to make it go any higher - it locks up instantly when I use ClockGen to up the HTT to 265. I've tried using higher voltages, up to 1.5 V with absolutely no effect. I'm running my memory on a 100 divider right now, so I know it's not having any problems at 130 MHz. I'm pretty sure the mobo isn't the problem, either - I'm running nice and stable right now at 310x7, so it seems like I should be able to go a lot higher than 260.
Did I just get a real dud of a CPU, or is there something else that could be limiting me? I know my -7000Cu isn't the best cooling available, but my temps still aren't all that high. What about my PSU? One thing I notice is that the CPU voltage seems to fluctuate a bit in CPU-Z when running Prime95. It also seems to be a bit lower than specified. If it's set to 1.45 V, CPU-Z might show 1.4 V , plus or minus about .12 V. That doesn't seem very good to me. I also don't seem to be able to get much higher than 1.4 V - even if I set it to 1.5 V, it doesn't read much above 1.4 V. Is it possible that my PSU is fluctuating too much, and that's causing my OC trouble? Is there anything else I can do to examine this? Everest and the MSI utility agree on that CPU voltage, BTW.
Are there any other possible culprits I'm overlooking? Any help would be greatly appreciated. I'd really like to be able to run 310x9 on this sucker for a healthy 2.79 GHz.