I own the board. rev 1.0 has no UEFI bios. It just needs the F8 Award BIOS. Rev 2.0 has UEFI beta but you dont need it for a Ivy Bridge on standard clocks. Read post #24 on this thread. OP not mentioned overclocking just advice on a CPU.
This is another thread where advice has been too casual.
Cash 13-
Best advice I can offer based on my experience.
1. First check if your board is rev 1.0 or rev 2.0 by looking at the board itself near the PCIE slots
2. Here is where you get your BIOS download from if required depending on rev
http://uk.gigabyte.com/products/product-page.aspx?pid=3897#bios if you need to update.
3. Check the version of BIOS you are on. You should see it on the black screen when you boot your PC where it says Award BIOS. Should be two letters beginning with Fx. If not download TouchBIOS software from Gigabyte website and run it this will show the revision.
4. Then once you have your version check it against the BIOS info in 2. above.
5. This will then tell you whether your board can accept an ivy bridge or you need to update the bios for it to accept an ivy Bridge.
6. If you have rev 1.0 you cant overclock the ivy. If you have rev 2.0 you can overclock but need bios UA9.
Then forget all the above and search for an i5 2500k and buy it rest assured you dont need to do any BIOS updates.
Merry Xmas and a Happy New year
