We review and test the MSI Radeon HD 6850. Today the first customized Radeon HD 6850 makes an entry, it comes with custom cooling which definitely is a notch better. Now remember, the R6850 is clocked at 775 MHz right ? We'll take it towards 975 MHz today by applying some tweaks. The memory as well, standard you'll need to work with a 4000 MHz (effective data rate) memory clock frequency .. we'll take that to 4800 MHz on this product.