got a t430 a week or so ago, a lot of people say the dedicated graphics are only just a bit better than the integrated but I'm pleasantly surprised by them. Get like 10 fps in Hat in Time on integrated on low settings, get 40 - 60 on dedicated. Got 80 - 90 fps in portal 2 on low settings in some random test chamber, in the 100s - 130-ish on dedicated. Haven't really tried any other games yet