This is a desktop computer that features a 2.7 GHz Quad Core Intel "Core i5" processor, 8GB (upgrade to 32GB) of RAM, (750GB, 1TB, 2TB or 4TB) HDD, and a NVIDIA GeForce GT 750M graphics processor. It also has a 27-inch LED-backlit display, a built-in "FaceTime HD" webcam, and four USB 3.0 ports
It also has a built-in "FaceTime HD" video camera and built-in stereo speakers underneath the 27" glossy 16:9 LED-backlit TFT Active Matrix LCD (2560x1440 native) display "with IPS technology".
Key Features
Intel Core i5-2500S 2.7 GHz quad-core processor
3.7 GHz Max Turbo Frequency
6 MB Intel Smart Cache, 5 GT/s DMI
8GB (upgrade to 32GB) RAM
750GB, 1TB or 2TB HDD
Slot-loading 8x DVD RW DL SuperDrive
AMD Radeon HD 6770M with 512 MB of GDDR5 memory
Stereo speakers with 17-watt digital amplifier
10/100/1000BASE-T Gigabit Ethernet
AirPort Extreme (802.11n)
Bluetooth 2.1+EDR (Enhanced Data Rate) module
Built-in FaceTime HD camera and microphone
SDXC card slot
macOS
Model : MC813LL/A
27-inch LED-Backlit TFT active matrix IPS display (2560 x 1440)