In the majority of pre built systems the graphics card is the weakest part. They seam to think that if they advertise with "whopping 8gb ram" or "amazing multimedia with quad core cpu" it will look better and forget that for gaming the GPU will almost always be the main bottleneck.|
So yes always builds yourself if possible that way you can cherry pick what you need. Such as if on a budget dont worry about super duper ram just get enourgh for what you need, also the easiest thing to upgrade.
For AMD GPUs quick guide, the first number is the generation eg 7xxx is this year and 6xxx is last year. Then the second number is the family eg x7xx is the budget gamer, and x8xx is the core gamer with x9xx being high end. Lastly the third number is more a guide of where sits in family so a 6870 is more powerful than 6850.
In conclusion the 5 family (6550/6570) is the ultra cheap family computer end. They serve a purpose for your average family wanting to use facebook, play music etc but not for proper gaming.
With Nvidea it is fairly simliar, the first number is the generation also, 5xx is last year and 6xx is this year. Then Its just a case of higher number the better a 580 is more powerful than 570. As a rough guide, x5x are the more general use ones with light gaming, and the x6x are the mainstream gaming ones with x7x and x8x being the more beefy ones. I wont entertain the dual core 690 and the like as thats just crazy.
Edited by Sharzam at 16:33:43 26-08-2012
Known as 'Sharzam' in 98.5% of games