Coming from a T41p, I was a VERY concened I might really notice how slow the 1.2 proc was...not to mention the HD or video performance on the X40. I am not and expert by any means but I can say the X40 is easily 2 times as fast as I had myself believing it would be. Boot up, MS Office apps and DVD's all run as fast as my T41p seemed to run things...I am sure it is slower but not near enough for me to notice it for regular activites.
Overall, I don't think it feels quite as "tank" like as the T4x but certainly plenty tough to live up the the IBM rep. Size wise, I am so happy I moved from the T41p to the X4x profile I may need surgery to get the smile off my face




