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Sapphire Radeon HD 7790 Dual-X OC is tested

AMD prepares for Radeon HD 7790 GPU codenamed Bonaire XT

It is rumoured that AMD will launch its new Radeon HD 7790 GPU codenamed Bonaire XT. It will be based on new second generation Graphic Core Next architecture and will feature 768 shader processors and 128 bits memory bus. It is believed that AMD will launch this GPU by later this month or early next month.

For now, we got some leaks about the benchmark of Radeon HD 7790 GPU under API OpenCL GPU-accelerated computing. Moreover, VideoCardz have leaked first images and specifications of video card based on this GPU.

Features of Sapphire Radeon HD 7790 video card

It is claimed that the Sapphires model will come with a dual-fan cooling solution known as Dual-X. The card will also be factory-overclocked and will have 1075 MHz clock. It is also said to features a 6.4 GHz memory clock, which is quite surprising for a mid-range model. The card will be 21.5 inches in length, and will have one 6-pin power connector and TDP of 150W. The card will be equipped with two DVI’s, one HDMI and DisplayPort.

AMD Radeon HD 7790 GPU is said to have following configurations:

Based on the Bonaire XT core

768 shader processors operating at 1075MHz

48 texture units (TMUs)

16 rendering units (ROPs)

1024 MB of GDDR5 memory running at 1600MHz

128 bit Memory Bus

102.4GB / s Bandwidth

CrossFireX connector

PCI Express (PCIe) 3.0

Performance of Radeon HD 7790 GPU

TDP is still unknown, but since the video card pictured has a six-pin connector, it is assumed that it will have performance higher than video card based on AMD Radeon HD 7770 GPU. It is believed that the new GPU will act as intermediate between Radeon HD 7770 and Radeon HD 7850 in terms of performance.

Overall, it is claimed that Radeon HD 7790 will be around 10% slower than Radeon HD 7850, probably on par with NVIDIA’s GeForce GTX 650 Ti. Bonaire than Pitcairn is expected to have low production cost as it contain leaner transistor count and narrower memory bus and hence allow for a more cost-effective VRM.