Apple MacBook Pro "Retina" 15.4" Widescreen - Intel® Core™ i7-4980HQ 2.80GHz, 16GB RAM, 1TB Flash Storage, AMD Radeon R9 M370X + Iris 5200 Pro, Force Touch Trackpad, macOS - A1398 MJLU2LL/A Mid-2015

*This model has dual graphics processors -- an AMD Radeon R9 M370X with 2 GB of dedicated GDDR5 SDRAM and an Intel Iris Pro 5200 with 128 MB of "Crystalwell" embedded DRAM (and shared system memory). The system automatically switches between graphics systems based on use (when applications use OpenGL, Core Graphics or other graphically demanding technologies, the system will use the dedicated AMD graphics, otherwise it will use the integrated Intel graphics to conserve battery life).

This model is equipped with 1 TB of flash storage which was an option for an additional US$500 at the time of purchase.

The MacBook Pro "Core i7" 2.8 15-Inch (Dual Graphics/Force Touch - Mid-2015 Retina Display) originally was only available as a "configure-to-order" configuration of the MacBook Pro "Core i7" 2.5 15-Inch (Dual Graphics/Force Touch - Mid-2015 Retina Display), but Apple later added it as a standard option, as well.

The MacBook Pro "Core i7" 2.8 15-Inch
(Dual Graphics/Force Touch - Mid-2015 Retina Display) features
a 22 nm "Haswell/Crystalwell" 2.8 GHz Intel "Core i7" processor (4980HQ),
with four independent processor "cores" on a single silicon chip,
a 6 MB shared level 3 cache,
16 GB of onboard 1600 MHz DDR3L SDRAM (which cannot be upgraded later),
1 TB of PCIe-based flash storage, and
dual graphics processors
-- an AMD Radeon R9 M370X with 2 GB of dedicated GDDR5 memory and
-- an integrated Intel Iris 5200 Pro graphics processor with 128 MB of "Crystalwell" embedded DRAM (and shared system memory).

It also has an integrated 720p FaceTime HD webcam and
a high-resolution LED-backlit 15.4" widescreen
2880x1800 (220 ppi) "Retina" display in
a case that weighs just less than 4.5 pounds (2.04 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 new advanced "Force Touch" trackpad,
a "MagSafe 2" power adapter, and
an internal, sealed battery.

Compared to its predecessor, this model is similar, but it has a faster graphics processor, faster flash storage, a higher capacity battery, and a more advanced "Force Touch" trackpad. It has some different identifiers, too.

Please note that stock images are used.