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View Full Version : DS3 and q6600 won't even boot into OS at 2.7 GHz



Thasp
05-18-2007, 03:11 PM
I have the cPU and northbridge watercooled. The CPU hasn't hit higher than 50c in coretemp.

I tried 8x400, 8x380, 9x300, 9x333, 9x380, 9x400, etc.. nothing works. I can't even get 2.7 GHz to boot into windows.

I've brought opterons from 1.8 to 2.85 and my e6400 from 2.13 to 3.72 on the _same_ board, with the same ram, psu, and cooling. I tried BIOS F10 and F11. I have no idea what is going on here. I tested my OSU with my multimeter, and it looks good. I unplugged HDs and semi-necessary fans, and same result. I turned off the C1E options and virtualization, usb mouse support, I tried 1.35, 1.4, 1.45, 1.525, 1.575, and 1.6 v to the CPU, and at 1.55 I never went over 50c.

I have vga ramsinks on the board's mosfets and a fan on them, the southbridge has a large heatsink on it. I'm not sure what the issue is. The CPU works fine at stock although UI haven't had time to put it through the full runner yet. I've never had a CPU that's this much of a dud before. Is the DS3 not good at quad cores, did I overlook something, or get a dud chip?

edit:I can't run 280 FSB either.. I pop my dual core CPU back in, and it runs 464 no problem. I don't see what's going on here. If I raise the vcore to 1.55 and run 2 orthos instances in windows, I see all four cores get hot, so I know they're all getting the added voltage, and the PSU isn't slouching on the multimeter at load either.

Thasp
05-19-2007, 11:48 PM
Bought a P5B and I booted up at 3.4. bibi ds3 :)

I still find it confusing how it could prime for 25 hours blend test, cpu test, then do 8 hours of memtest at 3.72 GHz, 1.535v, with ddr950 4-4-4-12 and fail this bad with a quad core with any BIOS I tried.

lopri
05-21-2007, 01:03 AM
Simply your board isn't made prepared for quad-core CPUs. (at least for OC-wise) Just like EVGA AR -> A1 revision. I had an AR board that did 500FSB with E6400 but I couldn't even overclock 100MHz with Q6600. RMA'ed the board (I :kissbutt: EVGA) to A1 version and the first boot was 400FSB without a hitch.