Yeah, it's compatible. It's also a rather horrible build, and you can get a far better build for a much lower price if you buy individual components.
For example - the CPU is an overkill, an i5-750 (or i5-760 for 10$ more) is more than adequate for any needs you're ever going to need. You also don't need an X58 motherboard, P55's are fantastic and allow for virtually any configuration you'd ever want (well, I'm assuming you're not planning on quad-SLI setups anytime soon). The GPU is pretty outdated, and I'm pretty sure you'll start feeling its age very soon as new games like Crysis 2 get released.
Anyways, if what you're looking for a great gaming PC that's as future-proof as you can get without splurging ridiculous amounts of money, I suggest this:
NVIDIA Gigabyte GTX 460 1GB - 230$
Intel Core i5-750 - 195$
MSI P55-GD65 - $139.99 after $20.00 Mail-In Rebate
Crucial 4GB (2 x 2GB) DDR3-1333 - 94$
Samsung Spinpoint F3 HD103SJ 1TB - 75$
Cooler Master 690 Black - 60$
SeaSonic X650W Gold X-Series - 140$
Total: 794$ (through newegg). You can even add a second identical GPU for nearly double the gaming power, and you'd still be way below the deal you wanted to buy. I suggest you seriously taking a long-hard look at what it is you want. You've come to the right site, now all you need to do is research a bit to get your answer.
That build is far superior to the "SuperCombo" deal you were eyeing at, and is close to 500$ cheaper. The truth is that any retailer is always looking at its own best interest, and simply loves to throw out these ridiculous overpriced deals at people who don't know any better.