Just in time for that last-minute Christmas shopping, the latest and greatest video cards from AMD have been released. Codenamed Cayman Pro and Cayman XT, the AMD Radeon 6950 and 6970 (respectively) are positioned at the high-performance gaming market segment.
Detailed specs for both new cards are as follows:
| Radeon 6970 | Radeon 6950 | |
|---|---|---|
| Compute Power (single-precision) | 2.7 TFLOPs | 2.25 TFLOPs |
| Compute Power (double-precision) | 675 GFLOPs | 563 GFLOPs |
| Core Clock Speed | 880MHz | 800MHz |
| Primitive Rate | 2 prim/clk | 2 prim/clk |
| Shader Architecture | VLIW4 | VLIW4 |
| Stream Processors | 24 SIMD/1536 ALU | 22 SIMD/1408 ALU |
| Texture Units | 96 | 88 |
| ROPs/Z-Stencil | 32/128 | 32/128 |
| Frame Buffer | 2GB GDDR5 | 2GB GDDR5 |
| Memory Bus Width | 256bit | 256bit |
| Memory Speed | 5.5Gbps | 5.0Gbps |
| Load Board Power | <300W | <225W |
| Power Connectors | 8-pin + 6-pin | 6-pin + 6-pin |
| Display Outputs | 2x DVI, 2x mDP, HDMI | 2x DVI, 2x mDP, HDMI |
The Radeon HD 6970 will be the top end single-GPU part in the Northern Islands family. It is clocked at 880MHz and comes equipped with 2GB of GDDR5 running at 1375MHz for an effective rate of 5500MHz. The 8+6 pin power connectors indicates a maximum draw of 300W under load. Street prices seem to be around $370-380.
The Radeon HD 6950 is a slightly lesser version of the 6970. It is clocked at 800MHz, and its 2GB of GDDR5 runs at 1250MHz for an effective rate of 5000MHz. Dual 6-pin power connectors mean a maximum draw of 225W under load. Street prices look to be right at the $300 mark.
While exact performance data isn’t available, it can be reasonably assumed that the Radeon 6970 will outperform the Radeon 5870, and an semi-educated guess says that the 6950 should at least be on par with the same 5870. We don’t have either Cayman card on hand, so it’s just speculation on our end for now. Results should be pouring in around the internet soon providing a look at whether AMD has regained the GPU “halo” from NVIDIA and just how well it’ll run Crysis.
The only high-end Northern Islands part that remains unreleased is the dual-GPU Radeon HD 6990 (code named Antilles) which is believed to be slated for a Q1 2011 release.
Dear Santa…



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