I Need Help Picking Parts for PC

I want to build a gaming PC but i dont know what parts i should put into it.I already have an intel i7 2.9Ghz processor, cooling fan, WLAN chip, and 6Gb RAM. So all i need are the missing parts for a fast gaming computer.  I have $500 for the rest of the parts.

If u have any powerful builds that can run modern games at high fps and rendering i would appreciate it.

http://www.youtube.com/watch?v=fX_QxnuG1XM

Maybe you can bring it down to $500 considering you already have some parts. 

Which i7 is that?

Is it a stock cooling fan?

What ram is that?

oh yeah, and you need to a motherboard that is compatible with that ram and cpu. The board in teh video is compatible with all sandybrige and ivybridge processors. Jow fast is your ram?

The i7 isn't necessarily LGA1155.

As far as i am aware, all the sandybridge and the ivybridge i7's are LGA1155, correct me if im wrong 

How do you know the cpu is sandy/ivy?

Anything below i7-2600 (talking about numbers here) is not based on the sandybridge architexture (which includes both sandybridge and ivybridge) the i7-2xxx is sandybridge, the i7-3xxx is ivy bridge. WITH AN EXPECTION, that being the "Sandy Bridge-E" family (I consider it a hybrid of sorts). I coundt find a list on intel's website, but i could find one on wikipedia, i know, it's wikipedia but anyway. http://en.wikipedia.org/wiki/List_of_Intel_Core_i7_microprocessors

Hope this helps.   

You need to know what type of cpu you have, if it is an i7 940 you will need a 1366 mobo and if it is an i7 870 or 875k, you will need a 1156 motherboard. If you get a 1156 mobo, you will need to get some different ram.

 

for more help with this build email me at [email protected]

I have an intel core i7 870 2.9 Ghz. The RAM is samsung, not sure but i am guessing it is 1600 Mhz. My friend had these in his PC and didnt want them anymore so i took them off of him. It is just the stock fan and i dont expect to do any overclocking for a long time.

So you need an LGA 1156 motherboard, if i recall correctly that means that the fastest memory supported is 1333hz. Being older, motherboards with a 1156 socket are cheaper. 

also because it is 1156 it will need either 2 sticks of memory or 4 sticks, you could have one though it won't perform that great.

I suggest to look on ebay or somewhere like that to find an 1156 motherboard. try to buy a motherboard from one of the "bug three companies" MSI, GIGABYTE, and ASUS. I would not spend much more than one hundred dolars on a motherboard if you are not going to overclock.

for graphics I woud opt for either a radeon hd 7950 or a GTX 660ti. I would go for a 1tb western digital green drive, you may want to pick up some am as well, you can get 8 gigs for under 50 bucks nowadays so if you can, do.