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Performance

3DMark 2013

We’ve got interesting results in 3DMark 2013: the amount of onboard memory doesn’t affect the performance of the Radeon HD 7790 in the Cloud Gate and Fire Strike scenes, but the 2GB version is as much as 70% faster in the heaviest test Fire Strike Extreme. That’s impressive, even though the scores are very low. We wonder if we’ll see the same in actual games. The CrossFireX tandem built out of two Radeon HD 7790s is faster than the single factory-overclocked GeForce GTX 760 in the first two scenes but falls behind the latter in Fire Strike Extreme. That must be due to the 128-bit bus and the small amount of graphics memory of the Radeon HD 7790.

Unigine Valley Bench

We see the same picture in this test:

The GeForce GTX 650 Ti Boost enjoys a large advantage over the Radeon HD 7790 with the same amount of memory, although these graphics cards cost the same money!

Total War: SHOGUN 2 – Fall of the Samurai

There’s almost no difference between the 1GB and 2GB versions of the Radeon HD 7790 in the first game on our list – a mere 2 fps at the AA settings. The CrossFireX tandem is 90% faster than the single HD 7790 and beats the GeForce GTX 760 when antialiasing is turned off. The latter is 1 fps ahead with 4x MSAA. The GeForce GTX 650 Ti Boost 2GB is again faster than the Radeon HD 7790 2GB.

Battlefield 3

Battlefield 3 doesn’t show any benefits from having 2 GB of memory on a Radeon HD 7790, either. The Radeon HD 7790 CrossFireX configuration beats the single GeForce GTX 760 in both test modes, even in terms of the bottom speed.

 
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