Best motherboard for my computer

[ayman_break]

i have a real 500 power supply i bought for 110$
and a gtx 660 for 230 $
those are not on my computer right now' so i need a motherboard from newegg
witch got a free g.skill 8gb ram 2*4gb
those are some of the motherboards
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128540
http://www.newegg.com/Product/Product.aspx?Item=N82E16813128554
http://www.newegg.com/Product/Product.aspx?Item=N82E16813130644
i really don't know what is the difference between them except the ram slots and PCI slots
do i need more than 8 gb ram (do i need a 4 slots for ram motherboard)
do i need sli
am a player of games like battlefield 3 ,assassin creed III ,NFS13 and a like them

 

[o1die]

No need for sli or 4 slots for the ram motherboard. Z77 will overclock the cpu if it's a "k" series; B75 won't. None K cpus won't overclock except for the mild turbo setting on any motherboard. The gigabyte board with free ram will run ok; just has older ports. If you need an hdmi port for blue-ray and go with the gigabyte b75, be sure your video card has it.

 

[nda209]

I'd buy all my components from Newegg except for the MB based on my recent experience there:

http://www.tomshardware.com/forum/24578-10-recent-newegg-experience