Building My First Gaming PC ! Need Help fast

[akash123able]

I have a current pc, it's specs are :-
intel core2duo e7400
4gb ram
Nvidia 9400GT

I have know that now a quad core pc and good gpu is eesential for my pc.

Now, I have a budget of 800$

Please Give me the best components for my budget

Is Intel i5 3570k really better than i5 2500k since i heard issues of overheating while overclocking.

Please Give a Good Build! I will have to use this build for 2-3 years

And yes i want to overclock gpu and cpu

Thanks In Advance

 

[Why_Me]

http://www.tomshardware.com/forum/261222-31-build-advice

 

[adgjlsfhk]

Is there a Microcenter near you? If there is it could save you close to $100. If not, get these.

Corsair psu: $69-$10mir
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139028

Seagate 500 gig hd $79
http://www.newegg.com/Product/Product.aspx?Item=N82E16822136769

I5-5500k $219
http://www.newegg.com/Product/Product.aspx?Item=N82E16819115072

Coolermaster HAF 912 $59
http://www.newegg.com/Product/Product.aspx?Item=N82E16811119233

Asrock extreme3 gen3 $119
http://www.newegg.com/Product/Product.aspx?Item=N82E16813157271

Amd 6870 $189-$30mir
http://www.newegg.com/Product/Product.aspx?Item=N82E16814150521