Lisa Gade reviews the mid-2015 dedicated graphics version of the 15” MacBook Pro with Retina Display. Apple’s latest refresh didn’t change much, but they did add the very likable Force Touch trackpad, even faster SSDs and updated dedicated AMD Radeon R9 M370M 2GB DDR5 for the higher end model. Is the AMD R9 faster than the NVIDIA GT 750M it replaces? Of course. How much? Watch our video to find out— we benchmark it in OS X Yosemite, Windows 8.1 and test gaming with Tomb Raider in Mac and Windows. The 15” Retina Mac is 0.71” thin and weighs 4.49 pounds. It has a 15.4” Retina IPS display with 2880 x 1800 resolution. All variants have 16 gigs of RAM, dual band WiFi 802.11ac, Bluetooth and 28 watt quad core i7 CPUs and Intel Iris Pro integrated graphics. The base model has a 256 gig SSD and a 2.2 GHz CPU. The $2,500 higher end model has a 2.5 GHz quad core CPU, a 512 gig SSD and it adds dedicated graphics. You can get it with a 2.8 GHz CPU if you like and up to 1TB SSD