Memory: 512Mb GDDR3
Memory Bus: 256-bit
Core Frequency: 670MHz (vs 600MHz stock)
Memory Frequency: 2000Mhz (vs 1800MHz stock)
DVI, VGA, HDMI
This seems to be the iChill version though the Memory clocks don't match up with the UK version. Searching the part number brings up all Russian (I think) websites which corroborate the clock speeds. Nevertheless, this has been factory overclocked by a fair bit and it comes with a much better (and quieter) cooler.
This should perform on par if not a bit faster than a 4850 due to the overclock and with the better cooler, it should also OC a fair bit more. Only 6 left in stock