There was no precise information about the planned on 23 September announcement of radeon HD 58xx video card on base of 40 nm chip RV870 with directX 11 support . According to optimistic forecast, AMD could begin the sales of video card during the announcement day.
However, as reports associate , on 23 September is planned only the announcement of radeon HD 5870 and Radeon HD 5850 , characteristics and test results .
Radeon HD 5870 will obtain 1600 stream processors, 80 textural blocks, 32 blocks ROPS, 1 Gb GDDR5 memory , 256- bit bus, frequencies 850/4800 MHz and energy consumption levels not more than 188 W. The cost of this card will be $399.
Radeon HD 5850 will obtain 1440 stream processors, 72 textural blocks, 32 blocks ROPS, 1 Gb GDDR5 memory-, 256- bit bus, frequencies 725/4000 MHz and energy consumption levels not more than 170 W. The cost of this video card will be $299.
Associates assert that on sale those video cards will enter not earlier than 9-10 October.