The OC one will provide slightly better performance at increased cost. both coolers on the cards are similar in performance and heat production is similar. Personally, I would get the non overclocked one and overclock it myself. there are many guides online of how to do this. even if you dont overclock it, the performance decrease will be minimal from the overclocked one
4870 by far.
It should do. The requirements are ati radeon 9800 256mb or above. So 1024mb should be fine.
the most high end graphics card from ati is the hd4870 x2 which is basically just 2 hd4870s in one card
Sapphire HD 5450 is better than Sapphire HD 6450 .
the one with 1024mb of memory is better because it allows more information to be stroed on the card instead on on the RAM which allows for faster speeds. This is only really noticeable on larger screens (about 30in and up) but it is still better to have more memory
yes if it is compatible
no Definitely. Im using the "budget" ATI Radeon 4350 512mb and can play Sims 3 on pretty high settings with a smooth framerate. Im actually thinking of upgrading to your card. Go for it man.
It runs it fine no problems here
gainward geforce gtx 560 ti
The Sapphire Radeon HD 3850 512 MB AGP 8x Graphics Card is a top rated card choice.
Not quite, ATI Mobility Radeon are chips integrated to laptops.
Is the Radeon hd 3870 a 1GB Check this one out ATI Radeon HD 4650 Which is 1GB has a DirectX 10.1 Support, 320 stream processing units and AGP 8x This card works good with my Intel P4 3.20GHz But on better CPU works Perfect.