Manufacturers are expected to release the new AMD 7000 Series GPUs in January 2012. As we already know AMD will first make available the high end cards: 7950, 7970 and later in 2012 (Q4?) we should expect the mainstream and low end cards like: 78xx, 77xx, 76xx etc. These GPUs are expected to perform much better with lower power consumption and at lower temperatures than their counterparts from 6000 series.
Previous speculations told that the new GPUs were supposed to be released on 5th December, but later that date was discovered to be a press conference in London at which AMD detailed the new GPUs. The new GPUs are codenamed Southern Islands.
Another rumor was that AMD would implement XDR2 Memory, XDR2 is twice as fast as GDDR5 but it doesn’t come cheap. At this point it is confirmed that AMD will use GDDR5 Memory.
The first two cards that will be available are 7950 and 7970, the flagship dual GPU 7990 is expected in March 2012.
HD7950 – Pro Tahiti
The HD7950 is based on Pro Tahiti Core that has the following specs: 384bit – 900MHz – 56ROUs – 1920ALUs – 120TMUs – 32ROPs – GDDR5 260 GB/s – 3GB Memory – 150 TDU and will be priced at about $350-400
HD7970 – XT Tahiti
The HD 7970 is based on XT Tahiti Core that has the following specs: 384bit – 1000MHz – 64ROUs – 32CUs – 2048ALUs – 128TMUs – 32ROPs – GDDR5 264 GB/s – 3GB Memory – 190 TDP and will be priced at about $450-500 and should need 1 x 6-pin + 1 x 8-pin power connectors.
So what are the new capabilities of the Tahiti Cores? (7950 & 7970)
- 32 color ROPs per clock
- 128 Z/stencil ROPs per clock
- Over 264 GB/sec memory bandwidth
HD7990 – New Zealand
The HD7990 is rumored to be a 2×7950/2×7970 with 6GB(2×3) Memory and is expected to be released in March 2012 and to cost about 700$.
The new AMD GPUs are the first to have support for DirectX 11.1, the new improved API will be released with Microsoft’s latest operating system: Windows 8.
The following functionality has been added in Direct3D 11.1.
- Shader tracing
- Direct3D device sharing
- Check support of new Direct3D 11.1 features and formats
- Create larger constant buffers than a shader can access
- Use logical operations in a render target
- Force the sample count to create a rasterizer state
- Process video resources with shaders
- Change subresources with new copy options
- Discard resources and resource views
- Support a larger number of UAVs
- Bind a subrange of a constant buffer to a shader
- Retrieve the subrange of a constant buffer that is bound to a shader
- Clear all or part of a resource view
- Map SRVs of dynamic buffers with NO_OVERWRITE
- Use UAVs at every pipeline stage
The product was later removed….
If you want to find out how a HD7970 performs against a HD6970 and a GTX580 or how Crossfire will scale take a look here: AMD HD7970 Leaked Performance Charts.