this sapphire hd6870 card be a great replacement for the previous Radeon hd4850 1gb card that come with this machine -lrb- HP Pavilion elite d5200t w\/8gb RAM -rrb- originally . the primary reason for buy this card be to utilize GPU processing with non-gaming app via DirectCompute and great price\/performance . secondarily , even though I be more of a casual gamer these day I also want to have dx11-capable hardware for any new game I may fancy at some point that use it . the card be trivial to install ; simply download\/install the latest driver from AMD and you be set . overall , this card be a marked improvement over the hd4850 I have ; I would especially recommend it to anyone look to upgrade a hd4800 or lesser series radeon card .