Difference between ATX and micro-ATX, graphic cards wise

With ease.
It only depends on your case's size and length, really.




Only size and OverClocking ability (which is almost a nonexistent thing for Micro-ATX boards).

Thank you very much for the fast respond, I am going to buy the motherboard and the graphics card right now!   . I also don't do overclocking at all with these so its all perfect. Thanks again  .

Give me the info/links to the motherboard and the video card that you're planning on buying, and I'll tell you right away if it's a good combination.
Also, some info about your case would be nice too.

Micro atx boards can overclock fine. It depends on the chipset, cpu and possibly ram more than the form factor.

The main differences are vertical board length and the number of available expansion slots. Usually 7 slot on an atx
mobo and 4 slots on a micro atx mobo. Other than that they are about the same. Oh, an atx mobo will only fit in
an atx mid tower or bigger, but a micro atx mobo will fit in a micro atx tower or bigger. Hope this helps.

To OP,

Your combination is just fine. 7770 will on that mobo, no matter if it is micro-atx.

Micro-atx has limited number of ram slot and pciex16 slot, supports less amount of memory with low speed. Overclocking is limited or no overclocking and no multi-gpu.

Graphic card compatibility is same.

They CAN OverClock (I never stated otherwise), but their OverClocking capability are waaay worse than that of any ATX board designed for OverClocking.
Of course it's a personal preference of each particular person, but, personally I wouldn't have recommended doing OverClocking on a Micro-ATX board, it's absolutely my IMHO.

You are right about oc on micro-atx master_chen. Atx is always better for overclocking where micro-atx provide limited and economy class.

Some micro atx mobos cost more than their full atx counterparts. Some micro atx mobos have 4 ram slots and
can run a bunch of memory at high speeds and/or tight timings. Some micro atx mobos can overclock a cpu quite
a ways past stock speed while some "overclocking" full atx mobos are limited in that area. Some micro atx mobos
even support sli or crossfire of 2 dual slot cards(but won't let you install any other cards that way). It depends on
the brand, chipset, and the specific model(and luck of the draw,as far as overclocking is concerned).