Maximum PC

My budget is around $750. I want a gaming pc that can play most bigger game on high or ultra like GTA V or BF4. Thanks.

I already have a copy of Windows on my jump drive.

Go to pcpartpicker.com and play around with configurations. Get an Intel i5 or one of those AMDs if you want to same money for a better graphics card. If you live near a Microcenter, they have great mobo/cpu combo deals. You only need 8 gb RAM. I suggest a 60 (or 120) gb SSD with a 1 TB HDD for fast boots/loading times. And for cases, get one in the 50-100 range. You can get good ones in that price range.

GFX, I have no clue what the latest and greatest ones are. You want a good one for your gaming needs so this will be most of your budget. Go read the MaxPC blog, Tom's Hardware, or Anand reviews.

You gave only a budget so that's as far as I can help. Do you need keyboard, mouse, monitors? Good luck and show your build here. We can tell you if it will work out.

I really hope that you don't need a keyboard, mouse or monitor because otherwise with your budget a gaming build that you're asking for isn't going to happen. I don't think you're going to hit Ultra settings with a budget of just $750 (generally builds that can run everything on Ultra start at about $1200 ish) but nonetheless you can get a decent build. Here is what I would suggest:

CPU: Intel i5-3350P - $179.99
Motherboard: Gigabyte GA-B75M-HD3 - $64.99
RAM: G.Skill Ripjaws DDR3-1600 8GB - $62.99
GPU: XFX Double D Radeon HD 7850 - $229.99
HDD: Western Digital Green 1TB - $79.99
PSU: Corsair CX-600 - $69.99
Case: Corsair Carbide 200R - $69.99
Total: $747.93

There are a few downsides with this build:

1) You do not have the ability to overclock the CPU. Not sure if this is a big deal for you but unless you live near a Microcenter your budget precludes getting a K series processor and a Z77 board
2) You'll have to do without an SSD. You can add one down the road though so that's a plus at least but unless you have a HDD you can transfer over you won't have the extra speed it provides
3) While the 7850 is a great card and it can run some games on Ultra settings it's not going to be able to run all of them at that high of a setting, depending on your resolution.

Overall though it is a solid build and should last a good long bit.

I haven't heard too many good things about the speed on the Green WD drives. They park their heads often and I hear this slows down load times. I'm not sure. Not much choice in the HDD market nowadays though.

I still refuse to buy an HDD until I can get a 1TB drive for $50 (No, I don't want to spend $90-100 on a 2TB) . I'm chugging along on a 60 GB OCZ Agility for now.

You're going to wait a very long time then, perhaps forever.

Though you might get lucky on a sale or something.

The budget is big I think that could really buy a very high speed pc. I wish I could have that budget too