no that 192 bit and 2gb of vram will kill u with skyrim modded.
just get two of these, sell ur 660's, it won't be that much out of pocket cost for you as the 660's still have a good resale value on ebay.
http://www.newegg.com/Product/Product.aspx?Item=N82E16814202026 $220 free ship
i see 660 ref coolers selling on ebay for 150... so your talking 140 out of pocket after you sell both and get the 7950's. which will OC like a beast most likely and double your 192 to 384 (great for 1440p)