Will these components work together?

[JHudson85]

I'm thinking of building a computer and I have searched around and found these components:
.INTEL Core I5 2500K
.Coolermaster HAF 912 Plus Case
.Sapphire 11179-09-20G HD 6870 1GB GDDR5 Graphics Card
.THERMALTAKE TR-600 600W POWER SUPPLY
.CORSAIR 2 X 4 GB DDR3-1600
.Gigabyte GA-Z68XP-UD3P Intel Socket 1155 Motherboard
.LG GH22NS70 DVD
.750GB SATA II 3.5” INTERNAL DESKTOP HARD DISK DRIVE
Just wondering whether or not they will function together, thanks.   

[Geek-9pm]

Welcome!
Computer Hope is the number one location for free computer help.
The forum will help everyone with all computer questions.

You have already done a lot of research.
My personal observations.
You named the Optical drive, but not the Hard drive. Should be the other way. Pick a name brand hard drive, any old thing for the DVD.
Don;t be in a hurry to spend a lot of money on RAM and Graphics. You might even hold off on buying both. Just use some old RAM that will work in it end any graphics card. Test the thing out fully. Then spend money on more RAM and graphics once you know the system is good. Just my opinion.

[Raptor]

PSU is a bit on the low side. I'd aim for around 700W.

You should read some reviews on it, see if it's a good PSU.

[Geek-9pm]

PSU is a bit on the low side. I'd aim for around 700W.

What?  It is a 600watt PSU. That system can not hit 400 watts.

[Raptor]

According to my calculator, this system could very well end up using 447W. http://extreme.outervision.com/PSUEngine (TDP 90% / capacitor aging 30%)

I did throw in 3 USB devices and an 80mm fan. I don't see any fans mentioned in your post but you should have at least one blowing in and one blowing out.

I guess 600W is safe. Still, read up on it to see if it actually provides 600 watts.

[Geek-9pm]

OK, raptor. Nice link
Hey! what does TDP 90% mean anyway?

[Raptor]

OK, raptor. Nice link
Hey! what does TDP 90% mean anyway?

These guys explain it better than I can:

Thermal Design Power, or TDP, is a statistic that is expressed in watts. It’s an expression of the amount of power a processor is expected to dissipate to prevent overheating. For example, a part with a 12W TDP will could potentially be cooled by a very small fan or a passive heatsink. A part with a 95W TDP, on the other hand, is going to need a substantial dedicated heatsink with a reasonably large fan (probably 80mm).

http://www.makeuseof.com/tag/thermal-design-power-technology-explained/

So basically I just told the calculator to keep in mind that the processor will be constantly running at 90% usage because you want to know how much power a system consumes when it's heavily taxed. (And it's a recommended value by the developer of the calculator)

[Geek-9pm]

Good answer. Seldom does the CPU run at full load.

[JHudson85]

Thanks, why should I pick a branned hard drive? 

[Geek-9pm]

Hard drives can do things that drive your crazy.
A failing hard drive is not often reported by the system. In fact, the Windows system has limited tenability to identify hard drive issues and report to the user. This is by design. The hard drive firmware does that kind of work.
And there have been some bad things in the hard drive industry. Some used drives have been sold as if they were new. If you buy a 'white label' drive you have no idea of who the maker was. Or even if it is a new drive.

The major makers offer warranties of up to one year. Here are the principal manufacturers of hard drives:
    Samsung
    Seagate
    Toshiba
    Western Digital
If is is not one of those, you might want to make  another choice. Oh, yes, IBM  is OK. But it might be a Toshiba with IBM name on it.

Bigger is not always better. The large drives, terabyte and more, use new technologies that are still in puberty. Arguably, the failure rate of the new technology may be higher.