The 7990 has not yet been released. In any case, the size will depend on the manufacturer.
The Radeon HD 7990 is slightly better than the GTX690 in terms of core speed.
The ATI Radeon HD 6310 is a newer graphics card and better than the HD 4250
Sapphire HD 5450 is better than Sapphire HD 6450 .
it depends which version your talking my ati Radeon hd 3450 is a 512mb 256bit card but most of the ati Radeon 3450s out there are 512mb 64bit
No. The miminum requirement for an AMD card is the Radeon HD 6480G. For an Nvidia card it is the GeForce GT 440.
yes it works with radeon hd 3xxx series
yes
yes!!
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.
yes if it is compatible
Whats Your Specs The ATI Radeon hd 3200 Should Definetly Be Able To Run The Sims 2
You cannot use an ATI Radeon HD 3850 because it is a desktop graphics card. They do, however, have a mobile version of the same card (made for laptops) called the ATI Mobility Radeon HD 3850, which you can use.