Help with first gaming PC

[Rhonin]

Hello, I'm trying to assemble my first small budget gaming rig (1000-1500 euros). And it's a little bit harder than I expected 😀
I think I need much help, do you have any tips for a newbie?
I think I found my CPU : Intel® Core™ i5-3570K Processor, I think it fits right in a medium gaming rig.
What's with GPUs? For what specs should I look? Know any good GPUs?
Any help would be much appreciated 😀
thanks in advance, and sorry for my grammar, English is not really my mother language 😀

 

[DeusAres]

Try this...

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-3570K 3.4GHz Quad-Core Processor (£161.99 @ Aria PC)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler (£25.45 @ Scan.co.uk)
Motherboard: ASRock Z77 Pro4 ATX LGA1155 Motherboard (£83.72 @ Scan.co.uk)
Memory: Corsair Vengeance LP 16GB (2 x 8GB) DDR3-1600 Memory (£65.40 @ Scan.co.uk)
Storage: Seagate Barracuda 1TB 3.5" 7200RPM Internal Hard Drive (£52.20 @ Aria PC)
Storage: Intel 330 Series 240GB 2.5" Solid State Disk (£140.69 @ Scan.co.uk)
Video Card: MSI GeForce GTX 670 2GB Video Card (£305.60 @ Scan.co.uk)
Case: Corsair Vengeance C70 (Black) ATX Mid Tower Case (£103.00 @ Amazon UK)
Power Supply: XFX 550W 80 PLUS Bronze Certified ATX12V / EPS12V Power Supply (£49.98 @ Novatech)
Optical Drive: Lite-On iHAS124-04 DVD/CD Writer (£12.98 @ Scan.co.uk)
Total: £1001.01
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2012-12-26 01:21 GMT+0000)

If you want an AMD GPU, go with the HD 7970. If you have any questions, don't hesitate to ask. I hope this helps; good luck!