hey Dan how much is the board your loking to get? i also need some other info.
1. is their any good xeon OC boards?
2.what multis do they allow?
3.im not that instrested in sli but is their any good OC boards that support x16?
4.what chipset are they usually based off of via nvidia intel prob?
5.were can u buy them? could i just get a 775 board off of newegg.?
$505
1. No, Skulltrail might be the only one. Other than that there isn't a single option in the BIOS. BSEL mods can be done though and software is possible as well. Boundaries of the new Seaburg chipset are unknown as of now.
2. Xeons are unlocked downwards.
3. No OC, but there are plenty that support PCIe x16, Seaburg even ups that to dual x16 2.0
4. 5000x, 5000v, 5000p and latest are 5100 and 5400. only 5400 officially supports 1600MHz FSB. The 5100 doesn't require FB-DIMM's though (can't even use them), does require ECC.
5. s775 Xeons are nearly identical to the Core2's as we just concluded, you know all about the boards. Probably more than I do. Dual socket is s771, Newegg does have them. Not sure about their current prices since I never check Newegg. Neqx is a nice store to buy this kind of hardware.
If your main goal is to overclock this is not the right platform. If you want to toy with this kind of hardware you might want to start with some older hardware. PC-DL is a very nice choice, it does have some overclocking options (fsb per mhz and such)