The Powercolor HD 4870 PCS is not based on AMD's default design, but uses an individual PCB layout. The fan connector is relocated and the RV770XR is moved colder to the slot cover. The cooler is made by Zerotherm and has several heatpipes aluminum fins and a big fan. Memory and voltage converters got additional cooling. Our sample is marked as 512 MiByte version but possible there will be more since the tick off label goes up to 2 GiByte.