[First Timer] Last check Before Ordering 1k Gaming build

Not the best $1,000 build. Don't forget, combos are your friends. Using them in the build below, you save a good $100-150, which can then be applied to get better parts. Here's a better build:

CPU/Mobo: X4 955 and Gigabyte GA-790XTA-UD4 $285 after rebate (with free game). I'm not a fan of the 8xx chipsets. You pay more, but only get the ability to drop in a X6 CPU (which you don't need) without a BIOS update (which is free).
GPU/PSU: HD 5870 and XFX 750W $440 after rebate
RAM: G.Skill Eco 2x2 GB 1600 mhz CAS Latency 7 $105
HDD: Samsung Spinpoint F3 500 GB $55
Case/Optical: Coolermaster 690 and cheap SATA DVD burner $73
HSF: Sycthe SCMG-2100 $35

Total: $993

Yeah, i've been trying to combo items to save money. I forgot to say that I already have the Corsair 650HX Power supply. It was on sale on newegg for $80 and it was the lowest price I've seen on that model so I just bought it. I've heard nothing but great things about Corsair power supplies, I hope i didnt make a mistake. Also, why is everyone suggesting the XFX power supplies? Are they actually good or is it because of the combo because those power supplies don't seem to be popular basing it on the number of reviews on newegg. Also, I couldnt combo the PSU with anything because it was purchased with a coupon.

Also, i really wanted the antec 300 and I couldnt combo it with anything i needed on Newegg, so I just decided to buy it on amazon because it was cheaper and newegg charged shipping and tax and because I had amazon prime.

Sorry, I forgot to say I had a PSU and case, but I purposely left it out to see what people suggest. Do you think the case and PSU are fine or should i return it and go with something else?

Corsair makes excellent PSUs. They're easily some of the best out there.

The reason XFX PSUs are getting recommended a lot is because they've gotten excellent reviews. In addition, XFX makes great GPUs that come with probably the best warranty out there ("double" lifetime). The combos with the PSUs and GPUs save some serious cash, making it a great combo.

Newegg reviews aren't that accurate. I generally don't even look at them. If a product is new, as in the case of XFX PSUs, there won't be many reviews. Even the products that do have reviews aren't that accurrate because the typical Newegg reviewer has no idea what they're talking about.

The PSU and case are both fine. The 300 is a little bit small, and the 300 Illusion (generally the same price) would have been a better choice because it comes with two additional fans.

Here's another combo, considering that you already have some of the parts:

CPU/GPU: X4 955 and HD 5870 $510

Would it be a better idea for me to switch out the MSI 890FX and get a 790FX instead? Is there any other difference between the 890 being able to use a 6 core cpu without an update?

It'll save you some money, get you a higher quality board and lose nothing significant.