Radeon HD 7990 Game Requirement Analysis
Radeon HD 7990 is a Dual-Graphics Solution based on the Graphics Core Next (GCN) Architecture.
The GCN Architecture succeeds the 40nm Terascale Architecture. In addition to being produced with a 28nm Technology, the GCN Architecture adds other Technologies that allow for energy efficiency. For example, ZeroCore Power, a long idle power saving technology, allows the Graphics Cards to shut down by itself when the Monitor is turned off.
GCN also adds Improved Anisotropic Filtering, DirectX 11 Tessellation and the Partially Resident Textures (PRT) Technology, which enables future games to utilize ultra-high resolution textures with the same performance as today's small and often repetitive textures.
It equips two GPUs Codenamed Tahiti XT which together have 64 Compute Units activated and thus offer 4096 Shader Processing Units, 256 TMUs and 64 ROPs. The Central Unit is clocked at 950MHz and goes up 1000MHz, in Turbo Mode.
Each GPU accesses a 3GB frame buffer of Fast GDDR5 Memory, through a 384-bit memory interface. The size of the frame buffer is adequate. The Memory Clock Operates at 1500MHz.
With a rated board TDP of 375W, it requires at least a 750W PSU with two available 8-pin connectors.
Radeon HD 7990 Competes with GeForce GTX 690 and proves to be considerably faster at resolutions over 2560x1600.
Radeon HD 7990 is best suited for resolutions up to and including 2560x1600. We recommend a Very Strong Processor (Intel Core i7 Quad Core/AMD FX Eight Core) and 16GB of RAM for Optimal Performance.