Because I'm not at the computer at the moment of typing, all I can really say is this. I want to use the PC for gaming, it's a new computer, about a month old with little to no use. 500 gb HDD Nividia 7100 - 128 mb RAM 4 gb Cpu RAM HP Slimline pc I'm trying to play games such as Call of duty and World of Warcraft with decent quality. I was wondering if an slimline pc could have an extra gfx card added into it or replace the 7100 with another card. I don't know if it has an extra slot for the card. I think it may have 1 slot open.