Well ,I just received my Samsung R 580 Desktop replacement ,for my son ,and I am very impressed. First , it is refurbished ,so I noticed some very light scratches around the monitor frame ,and the Core i5 badge was peeling in one corner.Other than that , I really can't complain. Here are the specs -core i5-430m ,Geforce 310m ,4GB 1066mhz - DDR3 , 500 GB 5400RPM HDD ,Windows 7 premium64-bit, Blu-Ray ,15'6 "LED backlit screen @ 1366x768 .The first thing I did ,was popped in The Dark Night " Blu ray ,and the picture looked great.The sound was not as loud as I had hoped ,but very clear and un-distorted. Then, I went for broke.I installed Crysis,and ran it on Low settings at 1066x720 (or something like that!) and I could not believe it. It ran very smoothly . The details were minimal ,but it did not stutter at all. I am going to install Tropico 3 tonight,and I am sure it will run decently. My son is very happy with his new toy .I suspect I'll be using it whenever he is not!! For $579 shipped ,I am satisfied .