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From the article:
TG Daily - ATI readies OEM special: SuperRV770 to challenge GeForce GTX 260, 280
Sounds like ATI's cards are far more capable than we thought, and the first versions were simply playing it very safe. If this all ends up true, I can easily see a 4870X2 XOC Black Edition that tears the pants off of GTX 280 and sends them at near relativistic speeds straight into Polaris!
The "Super RV770" will arrive with pre-installed water-cooling and features unlocked BIOS, which enables the GPU to be pushed all the way to 950 MHz, while the memory can be pushed to 4.8 GT/s (1.2 GHz QDR). According to our sources, you may be able to push the GPU even beyond 1 GHz, if you use TEC elements, and keep the temperature of GPU low.
At 4.8 GT/s, the "Super RV770" can achieve a bandwidth of 150 GB/s, taking the crown from the GeForce GTX 280. The RV770 chip has a 256-bit (32-byte) interface, which means we can calculate the bandwidth in the following way:
ATI RV770: 32-byte x 4.8 Billion Transfers/sec = 150 GB/s
Nvidia GT200: 64-byte x 2.2 Billion Transfers/sec = 138.37 GB/s
Not surprisingly, the first "Super RV770" product is already out. Diamond Multimedia teamed up with Danger Den and Smooth Creations to launch the "ATI Radeon HD 4870 XOC Black Edition".
Diamond clocked the core of its Super RV770 at 800 MHz and the memory at 4.4 GT/s (1100 MHz QDR). There is some room for overclocking left, as Diamond its own version of an unlocked BIOS and the board can be propelled up to 950 MHz for the GPU and 1200 MHz for the memory.
TG Daily - ATI readies OEM special: SuperRV770 to challenge GeForce GTX 260, 280
Sounds like ATI's cards are far more capable than we thought, and the first versions were simply playing it very safe. If this all ends up true, I can easily see a 4870X2 XOC Black Edition that tears the pants off of GTX 280 and sends them at near relativistic speeds straight into Polaris!