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Apple iMac G3 (Early 2001) vs Apple iMac Pro (2017)

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

AppleiMac G3 (Early 2001)AppleiMac Pro (2017)
Overview
ReleasedFebruary 2001December 2017
Performance
ProcessorPowerPC G3 400 MHz (iMac), PowerPC G3 500 MHz (iMac) or PowerPC G3 600 MHz (iMac)Intel Xeon W-2140B, Intel Xeon W-2150B, Intel Xeon W-2170B or Intel Xeon W-2191B
CPU cores18, 10, 14 or 18
GraphicsATI RAGE 128 Pro (8 MB) or ATI RAGE 128 Ultra (16 MB)Radeon Pro Vega 56 (8 GB HBM2), Radeon Pro Vega 64 (16 GB HBM2) or Radeon Pro Vega 64X (16 GB HBM2)
Memory64 MB, 128 MB or 1 GB32 GB, 64 GB, 128 GB or 256 GB
Storage10 GB to 40 GB1 TB to 4 TB
CPU400 MHz PowerPC G3 with 512 KB backside L2 cache at 160 MHz; 500 MHz and 600 MHz models have 256 KB on-chip L2 cache at processor speed. All use a 100 MHz system bus. Generic clock-only chip records do not infer silicon suppliers; cache differences remain in model details.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.
GPU400 MHz configuration: ATI RAGE 128 Pro with 8 MB SDRAM. 500 MHz and 600 MHz configurations: ATI RAGE 128 Ultra with 16 MB SDRAM; AGP 2x. A contemporary Macworld report observed European 500 MHz store listings with 512 KB cache and 8 MB Pro graphics, but explicitly questioned their accuracy and had no Apple confirmation. The current maker matrix is retained; no inferred regional CPU supplier or alternate SKU is added.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.
Memory type64 MB PC100 SDRAM standard on 400/500 MHz configurations; 128 MB on 600 MHz Special Edition. Two DIMM slots support up to 1 GB in the current maker sheet. Configurations retain each base and maximum memory with its original processor and drive.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.
Storage type400 MHz: 10 GB Ultra ATA and 24x CD-ROM, Indigo. 500 MHz: 20 GB and 8x/4x/24x CD-RW, Indigo, Blue Dalmatian or Flower Power. 600 MHz Special Edition: 40 GB and CD-RW, Graphite, Blue Dalmatian or Flower Power. Maker lists up to 40 GB build-to-order storage without precise processor ties, so extra cross-combinations are not created.1 TB SSD, configurable to 2 or 4 TB
Display
Screen size15″27″
Resolution1024 × 7685120 × 2880
Panel–IPS LCD
Brightness–500 nits
Refresh rate75 Hz–
Display typeNominal 15-inch shadow-mask CRT with 13.8-inch viewable diagonal and 0.28 mm dot pitch; no fixed LCD native resolution.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 features1024 × 768 at 75 Hz; 800 × 600 at 95 Hz and 640 × 480 at 117 Hz. Scalar refresh describes the highest-resolution mode.Wide colour (P3); supports one billion colours
Connections
Ports2 × USB-A, Ethernet, 2 × headphone jack4 × Thunderbolt 3, 4 × USB-A, SD card slot, Ethernet, headphone jack
Ethernet0.1 Gb/s10 Gb/s
External displays–Up to 4
Wi-Fi–802.11ac
Bluetooth–5.0
Camera–1080p FaceTime HD
Back portsTwo FireWire 400 ports and VGA video mirroring on every configuration; Two 12 Mbps USB ports on the computer, 10/100BASE-T Ethernet, 56K V.90 modem, audio line-in/out and two front headphone jacks; keyboard USB ports are not counted as chassis ports. All configurations are AirPort ready with an optional 11 Mbps card.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.
External displaysVGA output mirrors the built-in screen; no extended desktop.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
SpeakersIntegrated Odyssey stereo sound system designed with Harman Kardon, built-in microphone and fanless enclosure.Stereo speakers
Microphones–Four microphones; supports Hey Siri
Keyboard and mouseApple Pro Keyboard and optical Apple Pro Mouse.Space grey Magic Keyboard with Numeric Keypad and Magic Mouse 2; optional space grey Magic Trackpad 2
Design and power
TypeAll-in-oneAll-in-one
Weight15.8 kg9.7 kg
Width × depth × height381 × 435 × 381 mm650 × 203 × 516 mm
Operating systemmacOSmacOS
Size and weight detailMaker publishes height 38.1, width 38.1 and depth 43.5 cm, weight 15.8 kg. EveryMac instead gives depth 43.4 cm and 15.7 kg; current maker figures are preferred.Dimensions include the stand; weight varies by configuration and manufacturing process. Optional VESA mount adapter kit.
Power supply100–260 V AC, 47–63 Hz, single phase; maximum continuous power 150 W.100–240 V AC, 50–60 Hz, single phase
Materials–Recyclable aluminium enclosure; arsenic-free glass and mercury-free LED backlight
In the boxMac OS 9.1, iTunes, iMovie 2 and Disc Burner; CD-RW configurations write music and data CDs but cannot read DVDs. Maker confirms immediate availability on 22 February 2001. Copied PCI-slot/eMac entries in the retained sheet are excluded as unrelated template artifacts.iMac Pro, space grey Magic Keyboard with Numeric Keypad, space grey Magic Mouse 2, Lightning to USB cable and power lead

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