Computer Improvement Suggestions?

[eL3ctrozz]

I want any suggestion on any computer component upgrades such as adding cards to visual computer system enhancements I only tend to use the computer for High End Gaming I have left my PC specification bellow which will give you an idea of what computer performance I am achieving at the moment I have a budget of £200 with it been black Friday this week I am hoping to get some deals.

PC Specifications:

Motherboard: Asus P8Z77 VLX
Processor: Ivy Bridge Intel Core i5 3470 3.3Ghz
RAM: 16GB DDR3 1600Mhz Corsair Vengeance LP
GPU: Sapphire R9 280 Dual-X 3GB
SSD: Crucial MX100 256GB
HDD: 2 X 1TB Western Digital Caviar Blue
PSU : 650 Watt Coolermaster GX Lite
Case: NZXT H440
OS: Windows Pro 8.1 64bit

I am looking for any improvements and open to suggestions. I've also added a image of my computer system to allow you to view the computer visually.

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[clutchc]

Best upgrade for gaming with that setup is as fast of a gfx card as you can afford. Your i5 will be able to keep up with any card you use.