...don't sit together well. Gaming systems are mostly about graphics handling, but if you want the 'best affordable', you need to make a decision on how much you will pay for your graphics card. Some people will search out the cheapest card with some good reviews, while others will pay upwards of £300 for a graphics card alone. Other considerations are cooling and processor type. Are you going to get a fairly good system and overclock? Or, do you mean to buy the beefiest proc and run it at named speed?
There are other questions to answer too. But you need to have a clear idea of what you want and just how much you are prepared to pay.
All depends on what you think affordable is, if you are looking for affordability I would go for an AMD processor and something like a 4870 1GB for your GFX card. Like I said though it all depends of your budget.
IMO the hardware on offer at the high end of the market is well beyond any computer games on the market or even in the pipeline and I play at full HD 24" or 32".
This thread is now locked and can not be replied to.