You could change a couple of things, what is your budget? You could change some things around. Depending on budget you could get an AMD 955 BE cpu, and I dont know a lot about coolers but you should check out the CoolerMaster Hyper 212, it has a 120mm fan, it fits on all chips pretty much and I hear it does great things. You can even add another 120mm on that cooler too! It looks like you want to future crossfire so your mobo and PSU looks fine, you could try this optical drive for a few more bucks: http://www.newegg.com/Product/Product.aspx?Item=N82E168...
It got great reviews and awards and does lightscribe (if you use it)
As for you case, you should read some of the reviews on it, you can try this case if your fast. It has a code and MIR that ends today and its a great case for $65 after MIR. http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Or this case that has free shipping and two 120mm and two 80mm fans. http://www.newegg.com/Product/Product.aspx?Item=N82E168...
What is your budget?
That's a good build, I have one similar, though, for sure I would upgrade the case you selected.
I do agree with Squirrel15 on that you should try to change and get the X4 955 even if you have to use the stock cooler, which is not that bad, it's bad , but not that bad, it can handle the x4 955 at most at 3.4 (stock cooler)
I don't think that you should spend any more on the optical drive, I have the one you selected and it does the job just fine, and I really don't any concerns, it burns dvds/cds, reads dvds/cds I don't have blu-ray discs so what else do you need for a optical drive like that, just get the one you selected which is cheaper.
That Xion power supply is a very bad idea. A quality PSU is the key to a stable system. The things to look for in a quality PSU are at least 80+ certification, active PFC, and the majority of Amps dedicated to the 12v rail(s). The Xion PSU doesn't satisfy any of those requirements.
Also when RMAing a chip never tell the tech support dude/chick about after market HSF use and always retain the stock hsf in its box and dun sell it off! Only the previous gen AM2 5000/6400+ BE and certain Opterons need not be bundled with stock HSF for RMA purposes
i agree dmcfc on that coolermaster case. It would still be nice to know the budget, there is a major difference between a $950 build and a $1200 build. And that Xion PSU is a mistake (didnt see it was an Xion before, sorry), thats what companies try and do to trick people that their product is good. Yes it may have 850watts but its poor quality much like 'shortstuff' said in his comment. Same with videocards, just cuz its 512mb doesnt mean its better than a 128mb, but all video cards have either 1gb or 512mb now but this still applies. The few things you dont want to short change on your build is PSU, graphics card (if your a gamer), CPU, and Mobo. Yes all the components of a PC is important but if you have a crappy PSU, then your in trouble.
Not all the best deals are on new egg! I looked at ewiz.com and found this: http://www.ewiz.com/detail.php?name=MB-M4A78TE&title=As...
Combo this with the AMD 955 BE CPU the bottom of the screen and you save $30 and the Mobo is already $20 cheaper than neweggs! so its like saving $50! I couldnt find any combos with the AMD 955 BE anywhere on newegg so I just looked elsewhere.
Thermal take and corsair do have great PSU's but they are a little pricey, if your on a budget go with something like OCZ but if you got money to burn and want the best quality then thermal and corsair is the way to go
That's a really better build, though the cpu you selected is a Phenom II x4 955 C3 and by what I've heard don't know if ASUS already updated their bios is that the C3 cpu's are not working right alway with the M4A79XTD, you would have to use another cpu to update the bios then it would work. I don't see a lot of difference so just to be sure I would go with the C2 edition of the X4 955.