Maybe you should read the specs again. He doesn't need to replace anything to upgrade. He can add wo more 8GB sticks of memory and add more storage. And he does have the best video card out there.Sounds like you need to gut everything from the motherboard to the video card to the RAM. You could try just upgrading to the Best video card out there or something near the best. You cant upgrade the RAM unless you replace the Motherboard and CPU.