Could someone confirm/deny if the GA-EX58-UD4P motherboard that I have is compatible with the X56xx, L56xx, or E56xx, etc line of Xeon CPUs? Those CPUs do not appear on the Gigabyte support list for that board but I've found some indications that they might work. Gigabyte's official CPU support list only shows X55xx, L55xx, and E55xx. I was hoping to buy a used 6 core chip and overclock it to replace the i920 that I have in there now running at 3.8GHz. Not sure if it is worth paying the $$$$ to upgrade to a Haswell yet.
Would there be a BIOS flash required? I'm presently running, F14p, which is the latest Beta BIOS on the gigabyte site.