Apple iMac Pro (2017) vs Apple Mac Pro (2019)

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iMac Pro (2017) compared with Mac Pro (2019)

	AppleiMac Pro (2017)	AppleMac Pro (2019)
Overview
Released
Released	December 2017	December 2019
Performance
Processor
Processor	Intel Xeon W-2140B, Intel Xeon W-2150B, Intel Xeon W-2170B or Intel Xeon W-2191B	Intel Xeon W-3223, Intel Xeon W-3235, Intel Xeon W-3245, Intel Xeon W-3265M or Intel Xeon W-3275M
CPU cores
CPU cores	8, 10, 14 or 18	8, 12, 16, 24 or 28
CPU threads
CPU threads	–	16, 24, 32, 48 or 56
Graphics
Graphics	Radeon Pro Vega 56 (8 GB HBM2), Radeon Pro Vega 64 (16 GB HBM2) or Radeon Pro Vega 64X (16 GB HBM2)	AMD Radeon Pro 580X (8 GB GDDR5), AMD Radeon Pro Vega II (32 GB HBM2), AMD Radeon Pro Vega II Duo (32 GB HBM2 per GPU), AMD Radeon Pro W5500X (8 GB GDDR6; later option), AMD Radeon Pro W5700X (16 GB GDDR6; later option), AMD Radeon Pro W6800X (32 GB GDDR6; later option), AMD Radeon Pro W6900X (32 GB GDDR6; later option), AMD Radeon Pro W6800X Duo (32 GB GDDR6 per GPU; later option) or AMD Radeon Pro W6600X (8 GB GDDR6; later option)
Memory
Memory	32 GB, 64 GB, 128 GB or 256 GB	32 GB, 48 GB, 96 GB, 192 GB, 384 GB, 768 GB or 1536 GB (better)
Storage
Storage	1 TB to 4 TB	256 GB to 8 TB (better)
CPU
CPU	Xeon W at 3.2 GHz with 8 cores (Turbo Boost 4.2 GHz), 3.0 GHz with 10 cores (4.5 GHz), 2.5 GHz with 14 cores (4.3 GHz) or 2.3 GHz with 18 cores (4.3 GHz). Exact W-B CPU identities follow Geekbench. The 8/10-core versions launched first; Macworld reports later January 2018 availability for 14/18-core options. Apple changed the standard configuration to 10 cores in August 2020.	Intel Xeon W with 8 cores at 3.5 GHz (Turbo Boost up to 4.0 GHz), 12 at 3.3 GHz, 16 at 3.2 GHz, 24 at 2.7 GHz or 28 at 2.5 GHz (all up to 4.4 GHz). Sound On Sound identifies the exact processors as W-3223, W-3235, W-3245, W-3265M and W-3275M; Intel confirms their specifications. Intel's separate Turbo Boost Max 3.0 figures are not asserted as Mac Pro system capabilities.
GPU
GPU	Radeon Pro Vega 56 with 8 GB HBM2, optionally Vega 64 or Vega 64X with 16 GB HBM2. Vega 64X is a later option included in Apple’s current specification sheet, absent from the launch reviews.	One MPX module per listed configuration. Launch options were Radeon Pro 580X (8 GB GDDR5), Vega II (32 GB HBM2) and Vega II Duo (two GPUs with 32 GB HBM2 each). Later maker-listed options include W5500X and W6600X (8 GB GDDR6), W5700X (16 GB GDDR6), W6800X and W6900X (32 GB GDDR6), and W6800X Duo (two GPUs with 32 GB GDDR6 each). Two MPX bays support up to four GPUs; Apple confirms upgrades to two Vega II or two Vega II Duo modules, and an Infinity Fabric Link between two W6800X Duo modules. GPU memory is not pooled into one GPU's capacity.
Memory type
Memory type	Quad-channel 2666 MHz DDR4 ECC; 32 GB standard, configurable to 64/128/256 GB. The current maker sheet includes the later 256 GB option; launch reviews cover up to 128 GB. No user-accessible memory door.	Twelve user-accessible DIMM slots for DDR4 ECC memory; 32, 48, 96, 192, 384 or 768 GB. 1.5 TB requires the 24-core or 28-core processor. Memory runs at 2666 MHz with the 8-core CPU and 2933 MHz with the other CPUs. 768 GB uses six 128 GB or twelve 64 GB modules; 1.5 TB uses twelve 128 GB modules.
Storage type
Storage type	1 TB SSD, configurable to 2 or 4 TB	T2-encrypted SSD storage; 256 GB, 512 GB, 1 TB, 2 TB, 4 TB or 8 TB. The 256 GB and 512 GB versions use one module; larger capacities use two modules of half the total capacity. Apple states up to 3.4 GB/s sequential reads and writes. The current 512 GB option was not listed in Sound On Sound's original configuration table.
Expansion slots
Expansion slots	–	Eight PCI Express Gen 3 slots; two MPX bays provide x16 graphics and x8 Thunderbolt bandwidth each, with up to 500 W for an MPX module. Three additional full-length slots provide one x16 and two x8 links; the half-length x4 slot holds the Apple I/O card. Optional Afterburner x16 card accelerates ProRes and ProRes RAW in supported applications; current maker tests report up to six 8K ProRes RAW or 23 4K ProRes RAW streams, compared with the lower figures in the initial announcement.
Display
Screen size
Screen size	27″	None built in
Resolution
Resolution	5120 × 2880	–
Panel
Panel	IPS LCD	–
Brightness
Brightness	500 nits	–
Display type
Display type	LED-backlit Retina 5K display; IPS panel confirmed by EveryMac. Native refresh rate omitted because Apple does not publish it in the specification sheet.	–
Display features
Display features	Wide colour (P3); supports one billion colours	–
Connections
Ports
Ports	4 × Thunderbolt 3, 4 × USB-A, SD card slot, Ethernet, headphone jack	4 × Thunderbolt 3, 2 × USB-A, 2 × Ethernet, headphone jack
Ethernet
Ethernet	10 Gb/s	10 Gb/s
External displays
External displays	Up to 4	–
Wi-Fi
Wi-Fi	802.11ac	802.11ac
Bluetooth
Bluetooth	5.0	5.0
Front ports
Front ports	–	Two Thunderbolt 3 (USB-C) ports on top of the tower; up to 40 Gb/s Thunderbolt, up to 10 Gb/s USB-C and DisplayPort support
Camera
Camera	1080p FaceTime HD	–
Back ports
Back ports	Four USB-A ports; four Thunderbolt 3 USB-C ports with DisplayPort 1.2, Thunderbolt up to 40 Gb/s and USB 3.1 Gen 2 up to 10 Gb/s; UHS-II SDXC, Nbase-T Ethernet supporting 1/2.5/5/10Gb and 3.5 mm headphone jack. Thunderbolt 2, HDMI, DVI and VGA require adapters.	Apple I/O card has two Thunderbolt 3 ports, two USB-A ports at up to 5 Gb/s and a 3.5 mm headset jack. Two Ethernet ports support 1, 2.5, 5 and 10 Gb/s. Graphics ports vary by MPX module; 580X, W5500X and W6600X have two HDMI ports, while the other listed modules have four Thunderbolt 3 ports and one HDMI port. The chassis port counts above exclude graphics-module ports. TechRadar and The Verge describe an additional internal USB-A port for a software dongle.
External displays
External displays	Two 5120 × 2880 displays at 60 Hz with one billion colours, four 3840 × 2160 displays at 60 Hz with one billion colours, or four 4096 × 2304 displays at 60 Hz with millions of colours, alongside the built-in display	Display limits depend on the graphics configuration. One 580X supports six 4K displays, two 5K displays or two Pro Display XDRs; W5500X supports four 4K, one 5K or one XDR, and W6600X four 4K, two 5K or two XDRs. W5700X, W6800X and W6900X support six 4K, three 5K or three XDRs per module. Vega II supports six 4K, three 5K or two XDRs; Vega II Duo eight 4K, four 5K or four XDRs. W6800X Duo supports eight 4K, four 5K or six XDRs. Apple's dedicated current Vega II Duo guide confirms two modules can drive twelve 4K, six 5K or six XDR displays; port and bus placement restrictions apply.
Speakers
Speakers	Stereo speakers	Built-in speaker; 3.5 mm headphone jack supports a headset
Microphones
Microphones	Four microphones; supports Hey Siri	–
Keyboard and mouse
Keyboard and mouse	Space grey Magic Keyboard with Numeric Keypad and Magic Mouse 2; optional space grey Magic Trackpad 2	Magic Keyboard with Numeric Keypad and Magic Mouse in silver and black; optional matching Magic Trackpad
Design and power
Type
Type	All-in-one	Tower
Weight
Weight	9.7 kg (better)	18 kg
Width × depth × height
Width × depth × height	650 × 203 × 516 mm	–
Operating system
Operating system	macOS	macOS
Size and weight detail
Size and weight detail	Dimensions include the stand; weight varies by configuration and manufacturing process. Optional VESA mount adapter kit.	Apple's UK and US sheets publish height 52.9 cm, width 45.0 cm and depth 21.8 cm for the tower with feet, but the width and depth labels appear transposed relative to the maker's front and side image. Main dimensions are omitted pending resolution. The US sheet gives 55.7 cm height with optional wheels. Weight varies by configuration and manufacturing process; rack enclosure specifications are separate.
Power supply
Power supply	100–240 V AC, 50–60 Hz, single phase	1.4 kW supply; maximum continuous output 1280 W at 108–125 V or 220–240 V, and 1180 W at 100–107 V. AC input 100–125 V at 12 A or 220–240 V at 6 A; 50–60 Hz.
Noise
Noise	–	Regional maker acoustic tables differ; UK reports 2.5 B sound power at idle and during wireless web, while US reports 2.7 B and 11 dB operator-position sound pressure. Both describe a 12-core configuration with 48 GB memory, Vega II graphics and a 256 GB SSD.
Materials
Materials	Recyclable aluminium enclosure; arsenic-free glass and mercury-free LED backlight	Low-carbon aluminium housing on a stainless-steel frame; BFR-, PVC- and beryllium-free
In the box
In the box	iMac Pro, space grey Magic Keyboard with Numeric Keypad, space grey Magic Mouse 2, Lightning to USB cable and power lead	Tower, Magic Keyboard with Numeric Keypad, Magic Mouse, 1 m USB-C to Lightning cable and 2 m power lead. Launched with macOS Catalina; the current support sheet describes the later macOS Ventura release. Graphics options added after launch remain part of this generation, with their timing distinguished above.