Hey, im planning on buying this setup as my 1st dedicated gaming PC http://www.dell.com/ca/p/alienware-aurora-r3/pd?oc=daaurs_f_1e&model_id=alienware-aurora-r3. The upgrades im wondering about is for the graphics card. Would the 1GB GDDR5 NVIDIA® GeForce® GTX 460, which comes standard be best or would it be better to upgrade to the (+150$) AMD Radeon™ HD 6950? Thanks for the advice, and would you be able to suggest any other opinions on that system?