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Building first computer. Help please!

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Hi everybody, this is my first post and first computer so a thanks to any who read and reply! I got some extremely cheap parts at a sale so I was just rounding out my computer but I was wondering if people could look over my choices, see if anything could go wrong/ better things to put in or just generally be helpful. Thanks again!

I'm trying to get this to be my first gaming pc so there is no real price cap.

Need to buy

i5 2500k cpu


any advice between them? One is significantly cheaper but its 2550k vs 2500.
8gb ram. No idea, just googled.
Seagate Barracuda 2TB 7200RPM SATA3 64MB Cache 3.5IN Internal Hard Drive

Microsoft Windows 7 Home Premium Edition 64BIT SP1 DVD OEM

DVD Drive
http://ncix.com/prod...=LG Electronics

Already bought

Gigabyte motherboard
HD Radeon 6870 GPU
Antec GP550 Plus Power supply

Edited by AppleKing, 27 May 2012 - 12:24 PM.

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:welcome: AppleKing

Some guidance for you first of all regarding choosing a PSU, you never select one until all other hardware is selected and confirmed as being available, this way you can use a PSU calculator to help make sure that you will have enough clean and stable power + you want/need a PSU with a minimum of an 80% efficiency rating and over and above what you require to allow for any potential future upgrades such as an additional HDD, a second video card or a blu ray drive, the PSU you have already does not give you much headroom for this.
An example PSU calculator http://www2.corsair.com/psufinder/

Regarding choosing your Ram;
For the best and most stable performance you should where possible purchase a CPU and Ram that have been tested and approved by the motherboard manufacturer, this is referred to as the QVL ( qualified vendors list ) understand though that there are too many products released for them all to be tested so other hardware will be compatible but not proven to be.
Ram that is on your MBs QVL http://www.newegg.ca...N82E16820231314

You have not mentioned an OS such as Windows 7 64-bit;
Just a cautionary note, unless your OS disk is the full retail edition you cannot use it with a new MB as an OEM disk is tied to the original MB it was paired with, to use an OEM disk with a new MB is software piracy and therefore illegal.
Exceptions to the above are 1: If your MB is replaced under warranty and 2: If your MB is replaced out of warranty with an alternative type but same brand due to the original model no longer being available, an upgraded MB however will require the purchase of a new OS licence.

You do not have a DVD drive listed, you will need one if you are going to install W7.
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