Well got the Asus P5K-VM yesterday and to say I am dissapointed would be an understatement.
To summarise, I had the Gigabyte G33M-S2 in there, which was able to reach 3.2Ghz at 1.41V but lacks a 1:1 memory multi, so I had read that the Asus was able to reach 500Mhz FSB and had the 1:1 memory ratio. And though that I'd give it a shot as I was putting a new PSU in anyway.
To start with the Asus initially booted up with the 0304 bios, but the CPU speed was showing something ridiculous like 12.78Ghz
and the machine shut itself down because the cpu was overheating.
CPU compatability I thought, so I took it apart, popped in a E6420 and booted up and flashed the bios to 0401, I must say the bios flashing tools are fantastic on the Asus boards, so easy to copy the bios to a USB stick, press ALT+F2 or go into the flash tool in the bios and works a treat. No need for hunting around for a floppy
Anyway, once I had done this and popped the Q6600 back in there I got into Windows at stock, rebooted and set it to 355 FSB, locking the PCie, upping the CPU voltage to 1.41, memory voltage to 2.1V and memory multi to the lowest setting giving 700ish Mhz on the RAM.
Couldn't get it to get through 1 minute of Prime95 without two cores failing almost instantaneously
Wouldn't run FAH on the box without it rebooting.
Heat was fine, no real change from the Gigabyte.
Tried upping the Vcore to 1.45, tried with 2 DIMMS instead of 4, tried quite a few things but no dice. It was 3AM by this time and I was falling asleep at the keyboard.
I should have a pair of 8500+ memory coming tonight so I'll try some more combinations, but I must say I am a bit dissapointed, its not as if I am a big Gigabyte fan, I've only been exposed to two Gigabyte boards the 965_DS3 and the G33M in the last month and that was the first time I had used one.
But the bios on the Gigabyte boards is much better than this Asus, in terms of tweakability I find. For me the logic of the bios makes more sense and is easier to use. But thats a small point.
If I can't get this Asus to post and test at the equivalent speeds as the G33M then back in the box it goes.
On the flip side I got a chance to test the 500W Silverstone ST50EF-Plus-SC super silent, 80 PLUS, short cable v.1 ROHS PSU which although it has a lot of connectors has shorter cables for mATX cases all wrapped up neatly.
Nice PSU, inspired me to tidy up the rest of the case cabling and airflow now is as good as its going to get I feel.
OK so final summary and pics to follow tonight, my gut feeling is that I'll switch back to the G33M, with the new PSU and 8500+ memory and the Asus will go into a non-overclocked E6420 Sugo build that I have lined up.