The HD5850 is presently the more reasonable version in the HD58xx series and who other than Asus to convey us the first example for testing. Of course being a smaller sibling of the HD5870, the dispensation power has to be cut down a bit, so ATI have immobilized one of the SIMD units. This foliage the shader count at 1440 from 1600, while core pace has been dropped to 725MHz and memory clocked at 1000MHz. Overall we are searching a speed reduce of around 10-15%. However, the rest leftovers the same, so we still obtain GDDR5 memory, 40nm die, etc.