Help with Laptop purchase - gaming

[nickhite]

I have this setting configured
It is Alienwre m18x
Anything else I should upgrade in order for top online gaming performance ?

Processor: Intel® Core™ i7 2820QM 2.3GHz (3.4GHz w/Turbo Boost, 8MB Cache)
Memory: 8GB Dual Channel DDR3 at 1333MHz (4DIMMS)
A/C Adapter: Alienware M18x 330W A/C Adapter
Display Panel: 18.4-inch WideFHD 1920 x 1080 WLED
Video Card: Dual 2GB GDDR5 AMD Radeonâ„¢ HD 6970M - AMD CrossFireXâ„¢
Hard Drive: 750GB 7200RPM SATA 3Gb/s
Nameplate: Personalized Plate (Nicholas White)
AlienFX: Quasar Blue
Operating System: Genuine Windows® 7 Home Premium, 64bit
Adobe Reader Acrobat SW: Adobe Acrobat X Reader
Optical Drive: Slot-Load Dual Layer DVD Burner (DVD+-RW, CD-RW)
Sound: Internal High-Definition 5.1 Surround Sound Audio
Wireless and Bluetooth: Intel® Advanced-N 6200 a/g/n 2x2 MIMO Technology and Bluetooth 3.0
Security Software: McAfee® Security Center – 30-Day Trial
Hardware Support Services: 1 Year Advanced Plan
Factory Installed Games: Steam and Portalâ„¢ Factory Installed
OS Customization: Alien Cyborg
WirelessHD: Internal WirelessHD Technology - FullHD Video Transmitter

 

[Night Fox]

A SSD, perhaps get the single 256gb SSD, then buy a separate laptop drive for storage if you don't want to spend money on two SSD in raid 0