The MacBook Pro "Core i5" 2.9 13-Inch (Early 2015
Retina Display) features a 14 nm "Broadwell" 2.7 GHz Intel "Core
i5" processor (5257U), with dual independent processor "cores"
on a single silicon chip, a 3 MB shared level 3 cache, 8 GB of onboard
1866 MHz LPDDR3 SDRAM (which could be upgraded to 16 GB at the time of
purchase, but cannot be upgraded later), 128 GB or 256 GB of 4 Lane
PCIe-based flash storage by default (only 128 GB by default starting on October
27, 2016), and an integrated Intel Iris Graphics 6100 graphics processor that
shares memory with the system. It also has an integrated 720p FaceTime HD
webcam, and a high-resolution LED-backlit 13.3" widescreen 2560x1600 (227
ppi) "Retina" display in a case that weighs just less than 3.5 pounds
(1.58 kg). It does not have an internal optical drive.
Connectivity includes 802.11ac Wi-Fi, Bluetooth 4.0, two USB 3.0 ports, two
"Thunderbolt 2" ports, an HDMI port, an audio in/out port, and an
SDXC card slot.
In addition, this model has a backlit keyboard, a clever haptic-capable
"Force Touch" trackpad and an internal, sealed battery that provides
an Apple estimated 10 to 12 hours of battery life depending on use.