Overall the new values should bring the product a nice 10 to 15% performance boost opposed to the regular model. Not only have there been tweaks on the GPU, no the memory clocks got overhauled as well and have been increased from 5.5 Gbps towards 6 Gbps bringing the product a good chunk of additional memory bandwidth. So the board power (maximum power draw) needs to allow it to do so, if not it drops to 1 GHz or whatever board power range is allowed. The R7970 Ghz edition can "boost" from 1000 MHz towards 1050 MHz if it meets the right conditions. AMD now uses a Boost feature, exactly similar to what NVIDIA is doing on the 670/680 cards. The product is called GHz edition though even a little more. They tweaked the existing design a little and combined with the right amount of voltage they made the product a good chunk faster by increasing the GPU clock frequency towards 1050 MHz (925 MHz is reference for the standard 7970). Pretty much AMD is binning the Tahiti XT GPUs and the "better" batches are now labeled as Tahiti XT2. The Radeon HD 7970 however is a potent graphics card with a lot of reserve, AMD today is releasing the GHz model of the 7970 card. The product was launched with success and board partners all introduced customized models with factory higher clocks and within that timeframe sure, there was NVIDIA with the GeForce GTX 670 and 680 releases battling against the 7900 series from AMD. The AMD Radeon HD 7970 is rated with a TDP of 250 Watt.Exactly six months ago, back in December 2011, the Radeon HD 7970 graphics card was born, and in that small timeframe a lot has changed already.
The integrated UVD Video-Decoder is able to decode H.264, VC-1 MPEG-2, MVC, MPEG-4 Part 2 (DivX/Xvid) and Adobe Flash videos. Thanks to Eyefinity up to 6 monitors can be connected to the 7970. Therefore, AMD later introduced a 7970 GHz Edition that was clocked at 1000 MHz and performed on the same level as the GeForce GTX 680.
Compared to the GeFore GTX 680, the 7970 is about 8% slower. The performance of the AMD Radeon HD 7970 is clearly better than the mobile Radeon HD 7970M (which is based on the Pitcairn with only 1280 shaders). The 7970 offers 2048 shader cores (1D) of the GCN architecture (first generation) and 128 texture units. It was the first GPU that was produced in 28nm and supports DirectX 11.1. The AMD Radeon HD 7970 is a high-end graphics card for desktop PCs It is based on the Tahiti core.
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