Summary: I double checked processor compatibility. The AMD OSA1220CZBOX should work. I double checked memory, I have ECC un-buffered 1.8v dimms. Connected power to a Corsair CMPSU-620HX. Double checked connections, made sure the board was grounded to the chassis (via screws). Nothing! No dice!
Pros: The feature list for price is excellent. And the ability to use older generation Opterons for lower power and temps is great. It was GOING to make a great backup server.
Cons: I bought TWO of these (and related CPUs, RAM, etc). Both have not turned on. I assumed it was my problem, but not anymore.
Summary: Its hard to find a good whitebox config that you can count on to run VMware ESX. Sometimes you take a chance. You can count on this config to work. Runs 3.x and the 4.x beta fine.
Pros: Great motherboard. supports Quad Core Opteron 13xx out of the box. Used with SUPERMICRO CSE-822T-400LPB case. All parts are recognized by VMware ESX. Used 2 x Intel GT1000 low profile. 4 Kingson 2GB DIMMs KVR800D2E5/2GI for 8GB total.
Cons: Obviously VMware cannot see the Nvidia raid but I expected that.
Summary: Would be nice if SuperMicro could update the memory voltage controller to support up to 2.2v memory.
Pros: Very clean board layout; Each interface with a dedicated IRQ; Works under standard 2.6.22+ Kernels without drivers; Solid support; Header for Lan1/Lan2/Overheat/PS failure/Etc; 5 3-pin fan headers; flawless install into SuperMicro CSE-822T chassis; BIOS has options for all facets of the board; A ...
Cons: Memory may be DDR2-800 but you can only use 1.8v DIMM's. I had overlooked this and bought DDR2-800 CL4-4-4-12 memory at 2.1v and it was clocked down to CL5-5-5-13 in order to work/be stable at 1.8v