Time to build me a new PC

It is time for me to build a new Desktop with an 800$ budget. So far this is what I have come up with

AMD Phenom II X6 3.3GHz Black edition $193
4X 4gb Corair ddr3 1600mhz ram modules with heatsinks $96
LG Blu ray drive with Dvd burner $40
WD Caviar Green 1TB sata HDD 61$
Seagate Barracuda 1TB sata HDD $already owned
NZXT Black Source 210 ATX Mid-Tower PC Case w/ PSU $31
ASUS Crosshair V Formula Republic of Gamers AMD990FX Mobo $220

I just wanted to make sure i am getting decent bang for my buck and that i haven't made some huge oversight in putting together the various components of a desktop.

Are you looking for advice or approval? If I were making some component choices I would feasibly be confident in them.

I am fairly confident in my choices, but i always welcome advice just in case someone has had problems with any of the hardware i have listed, or if they could reccomend a better alternative to my build.

You're skimping on the PSU... always a bad choice. Are you really risking $800 worth of equipment, just because you can't be arsed to spend an extra $20 on a decent one?

Beside that, why do you buy AMD? Bulldozer was a disappointment for the gaming community and while it has a promising future in servers, I see no point in buying an AM3+ socket MOBO. Intel's i5 & i7 (Sandy Bride) processors have demonstratively outperformed AMD's line of CPUs in the mid- & high-range and this is likely to be true even in the future when the Ivy Bride family of processors come out.

More nitpicks: Are you sure, you're actually gonna use that Blu-ray drive? If you're throwing money around like this, an SSD would be a lot better investment as it can dramatically shorten boot time and makes for a "snappier" desktop experience.

Final nitpick: You didn't write what you want the system for, so we can't give you any true advice as we have no idea what your actual demands are.

I want the Desktop to last me close to 5 years while being decent at gaming, and letting me do my school work.

My reason for not going with an i5 or i7 is that they are pretty damn expensive right now. The i5 Quad Core is the same price as the AMD Hex Core. Another reason is that my computer will not be exclusively for gaming so i like the multi-tasking possibilities of a 6-core processor.

I will look for a good PSU though.(+ rep for the suggestion)

for this price you can eve nbuild an better one
find some cheap pc webstore with good components
and compare that with your specifications
if it under your budget imprivce the components of that site

The number of cores does not make that big of a difference in regards to multi-tasking, you don't even want to know how much stuff I can run at once using an I7 at 4.3g.

If you want a computer to last 5 years and be even remotely decent at playing games through that life span you will need a more expensive processor capable of being high range for a few years before starting to degrade.

Also note that unless the dvd player comes with the software you will either have to pirate or purchase a media player capable of playing blu-ray disks.

An AMD hex-core will multitask much slower than an intel quad-core because an i5 is simply almost twice as fast. Many threads can run on one core, the intel will be faster at everything; what you're saying makes no sense.

You haven't listed a graphics card, do you already have one? You can't play games without one.

Your RAM is way overpriced.
http://www.newegg.com/Product/Product.aspx?Item=N82E16820104173&cm_sp=Cat_Memory-_-Daily_Deal-_-20-104-173

Caviar green is an energy saving, slow disk. You will have long load times with that.