m building a low budget gaming desktop... but I'm not really building it. My uncle is... i just got to decide what parts I'm getting.I already have a gpu which is a sapphire hd 6770, and i want to try to crossfire it (double it). but if you can find a gpu from $50-160 that is better i'll take it. my computer has to be less than $700 or 600, if you want to update my list.
You picked a mini-ITX board. You do not want that. There are regular h77 motherboards. They are cheaper than z77 motherboard. Z77 boards are only for overclocking. If you aren't overclocking, which you won't be with an i5 3470, you only need an h77 board.
Don't waste money on a motherboard. The one you listed isn't even for intel CPU's its for the AMD FX series. Just because some people got a DOA doesn't mean you will. Get a $70-$80 motherboard and get a better GPU
The GPU is what you want to focus on most here. Gaming experience is all based on the GPU.