Basicly you want a mobo with a socket 1155 (wich is same as your CPU) and can handle 3th gen procs (22nm)- and not only the 2nd gen procs (32nm)
So anything like P67 or Z77 will do.
Z77 is newer.
P67 does not always support your CPU without a BIOS flash (wich is easy with ASUS mobo's)
And even so, the onlyu reason to support your CPU fully is for it's build in garaphics... wich you are NOT gonna use with your 660Ti.
And only using 1 card so any board will run it at 16x. Don't stare blind on PCI-e 2.0 or 3.0 as 2.0 at 8x is still fast enough for 1 GTX690 (barely...)
So if you want to have a relative cheap upgrade, I'd go P67 (eg my board P8P67 Deluxe costs about 120€/$155)
If you want the latest (wich will not perform better compared to an P67, but is more future proof) then you want Z77 chipset.
Don't buy the ROG boards as they are very expensive and you wont likely OC it the EXTREME way
Those "normal" (non-ROG) boards can handle decent OC themselves
Just don't go lower than P67 chipsets... and if I were you I would ofcourse but the Z77 chipset boards!!!
If you plan on going SLI AND
you have a big CPU cooler (like the Thermalright Silver Arrow or something) then be sure to look for motherboards who have the first slot a PCI-e 1x (and not 16x) as it will most likely be blocked when using big CPU-coolers...
Then again, those boards are hard to find for SLI 16x/16x as they will be most likely 8x/8x...
But no need to worry about the last thing I mentionned...Edited by ASUSfreak - 4/6/13 at 2:28am