First PC Build!!! Please overview it!!!

That's a pretty good start actually. I would not recommend AMD on any build right now when even the lowest end Sandy Bridge build will eclipse it 100 times over.

That heat sink is actually made specifically for HTPCs and cases where there tight space constraints - the HAF 912 will be able to accept much larger heat sinks. I have that same case and it will accept up to a 120mm PWM fan with no problems whatsoever. Also watch the tall heat sinks if you plan to use a cooler due to the space constraints.

I would also not recommend going cheap on the PSU either as that's one area where you really get what you pay for. I personally think the PSU is the most important part of any build and I wouldn't recommend skimping on that.

Also don't get a 550TI either - it's not the best choice in the ~$150 range - the Radeon 6850 is a far safer bet.

Try this setup:

Motherboard: http://www.newegg.com/Product/Product.aspx?Item=N82E168... - Asrock Z68 Extreme 3 Gen 3
CPU: http://www.newegg.com/Product/Product.aspx?Item=N82E168... - Intel Core i5-2400
RAM: http://www.newegg.com/Product/Product.aspx?Item=N82E168... - Crucial Ballistix 8GB 1600MHz
Video Card: http://www.newegg.com/Product/Product.aspx?Item=N82E168... - Sapphire Radeon HD 6850
PSU: http://www.newegg.com/Product/Product.aspx?Item=N82E168... - Corsair Builder Series CX600

I didn't include a cooler because the 2400 does not have an unlocked multiplier and can't be overclocked - you don't need one.

If you swap to Intel, you can get an i3 2120 and a nice ASRock Mobo.
Intel Core i3-2120 Sandy Bridge 3.3GHz LGA 1155 AND LITE-ON 22X DVD±R DVD Burner Black $145 Combo
ASRock H61M/U3S3 LGA 1155 Intel H61 HDMI SATA 6Gb/s USB 3.0 Micro ATX $70 It comes with one SATA 3 and one SATA 2 cable (exactly what you need).
That's a saving of $20 with MUCH better gaming performance.

How about a SAPPHIRE Radeon HD 6850 1GB. The 6850 is much better for $10 more.
Take a look at this if you're not convinced GTX 550 Ti vs. Radeon HD 6850

Let's upgrade to a much better quality modular PSU. OCZ ModXStream Pro 600W Modular High Performance Power Supply Let's face it Cooler Master makes nice cases, but that's about it. Their PSU's just suck. Inferior quality and the such.

HDD is fine.

I can vouch for the Case, and RAM. Drop the cooler, the stock one is sufficient for the i3.

This build is almost exactly like mine, with the only exceptions being a 1TB HDD, and a Sapphire 6870.

Some notes:The PSU cables are a little short if you want the interior to look organized, but the case stays nice and cool either way. When attaching the HDD status pin to the Mobo, the poles are reversed so you must turn it upside down.

I definitely agree about Cooler Master PSUs, but I'm not the biggest fan of OCZ either - they have horrible tech support - trying to return a defective RAM module was the biggest pain in the a-- I've ever dealt with. I know their PSU division has improved since they took over PC Power & Cooling but I still wouldn't trust it, I'd go Seasonic or Antec over them. Try this instead: http://www.newegg.com/Product/Product.aspx?Item=N82E168...



I also suggested the same card - I have two 550TIs in SLI and it's OK but I definitely regret the purchase. There's no denying EVGA is an excellent brand, though. When the Radeon 7950 drops in price, it shall be mine.  



Why mATX? I don't recommend mATX on *ANY* desktop build unless it's an HTPC. mATX expansion options will be incredibly frustrating and it will severly limit how many drives you're able to put in your system. Go with a full ATX desktop board - you can get a low priced H67 desktop board and it will be fine, something like this will be more acceptable: http://www.newegg.com/Product/Product.aspx?Item=N82E168...

If you can get rid of the H61 mobo and get a P67, Z68 or H67 is better.
They will support future Ivybridge CPUs