Sapphire Radeon HD 7790 Dual-X OC “Bonaire” GCN GPU Leaked


It was reported that AMD was planning to launch their new Bonaire based Radeon HD 7790 GPU next month. The Bonaire chip is supposedly based on the upcoming GCN 2.0 architecture which offers better performance compared to GCN 1.0 "Cape Verde*. Sweclockers have leaked the first pictures of the Sapphire Radeon HD 7790 Dual-X OC graphics along with a few performance test.

Sapphire Radeon HD 7790 Dual-X OC "Bonaire" GPU Unveiled

The Sapphire Radeon HD 7790 Dual-X OC as the name suggests is an factory overclocked variant which comes with 768 Stream processors and a 1 - 2 GB GDDR5 memory running across a 128-bit memory interface. Core clocks are maintained at 1075 MHz core and 6.4 GHz effective memory clock speed. The exact core clocks are not mentioned since the Sapphire Radeon HD 7790 Dual-X is an overclocked variant of the Radeon HD 7790 GPU.

The GPU has a memory bandwidth of 102.4 GB/s and churns out a pixel fill rate of 51.6 GT/s. These specifications are quite an update from the Cape Verde HD 7770 GHz edition which offers 640 Stream processors and a GDDR5 128-bit memory churning a bandwidth of 72 GB/s. The core clock is also faster compared to the 1000 MHz 1 GHz on HD 7770 GHz edition but since the reference core clock is not, we are better off waiting a few weeks for the exact clock specifications to show up.

As for the Radeon HD 7790 GPU details, the card has a TDP of 150 W and is supplied power through a single 6-Pin connector. A single CrossFIreX goldfinger offers 2-Way Crossfire support while display options include Dual DVI, HDMI and a Display port and support AMD HD3D and Eyefinity Technologies. The Radeon HD 7790 would tackle the upcoming GeForce GTX 660 SE GPU which is a faster variant than the GTX 650 Ti and both GPUs would fall under the sub-$200 market. From the benchmarks, it can be noted that the GPU falls just under the HD 7850 by a 10% margin in 3DMark Fire Strike, you can head over to the source for more details.