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Sapphire HD6790 CrossfireX Review

Rating: 9.0.

For most of us the AMD HD6990 is a pipe dream, the cost is very hard to justify. Let’s not forget that unless you are gaming at super high resolution or across multiple screens it is often not needed. With the recent release of nVidia’s GTX550 ti, AMD have decided to update their popular HD5770, with the new HD6790 targeting the £120 sector. Today we are looking at the custom Sapphire HD6790 model which features an enhanced heatpipe cooler and PCB design.

AMD are marketing the HD6790 at modest mainstream 1080p settings, with ‘balanced performance and price’ being the key talking point. This is the same strategy they used with the HD5770, and it makes sense as it is one of the most widely used resolutions among enthusiast gamers, especially if you game on a giant HD LCD or Plasma television.

In our launch review today we are going to work out how the HD6790 slots into the performance marketplace and will be comparing against the HD5770 and GTX550 ti with some newer game titles. Just as importantly we are looking at CrossfireX scaling as many enthusiast users will buy one now and another later to upgrade gaming performance.

AMD HD6790
Compute Power 1.34 TFLOPs
Core Clock Speed 840mhz
Shader Architecture VLIW5
Stream Processors 800 ALU
Texture Units 40
ROPs/Z-Stencil 16/64
Frame Buffer 1GB GDDR5
Memory Width/Speed 256 bit, 4.2 Gbps

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