I have 2006 gaming build still working great. I also have a dell laptop 2011 build. I have upgraded both to window 10. In World of tank's I have seen a massive boost on the old desktop with the auto setting to medium on window 7 it was low. With laptop it now set to low but think this is down to the dual graphics and the game only seeing the intel 3000 graphics. A five year's gap between the two but yet performance is about the same in this game. The i5 win's cpu but the old desktop "HD 7770" win's the GT 525M. Over all performance got to be the laptop ram is 1333mhz with old desktop only 400mhz. The big different is the old system can out put 1680x1050 resolutions but laptop is cap at lower 1366x768 so you would think this could mange higher effects but not the case. I think anyone would be far better buying a desktop for gaming then even thinking about a gaming laptop. I don't think the gap is still 5 year be hide desktop's but was a very big surprise.