Tech Specs

Product Specfications

Mac, Windows & Linux Logos

Compatibility

Mac Compatibility

  • Mac Pro 7,1 (2019) – 2.5x wide GPU card for slot 3 (& 4)(2)
2019 Mac Pro PCIe Slots
  • Mac (Intel®) with Thunderbolt 3 port plus Sonnet eGPU chassis
  • macOS 11.6+

Windows Compatibility

  • Windows computer with 2.5 wide x16 PCIe slot
  • Windows 11 and 10

Thunderbolt eGPU Chassis Compatibility

  • Sonnet eGFX Breakaway Box 650
  • Sonnet eGPU Breakaway Box 750 or 750ex
  • Sonnet DuoModo eGPU module

Radeon RX 6800 XT Ports Compatibility

  • macOS 11.6
  • HDMI: 4K 60Hz
  • DisplayPorts: 5K 60Hz
  • USB-C Port: Not compatible
  • macOS 12
  • HDMI: 4K 60Hz
  • DisplayPorts: 5K 60Hz
  • USB-C Port:(1)
    • LG Ultrafine 4K and 5K Thunderbolt Displays(5), Apple Pro Display XDR, and other Type-C displays
  • Windows 11 or 10
  • HDMI: 8K 60Hz, 4K 120Hz+ (with AMD FreeSync monitor)
  • DisplayPorts: 5K 60Hz, 4K 120Hz (with AMD FreeSync monitor), 8K 60Hz (using two DisplayPorts)
  • USB-C Port: 6K 60Hz in Windows PC or in eGPU chassis connected to Thunderbolt 4 computer port; not compatible in eGPU chassis connected to Thunderbolt 3 computer

Hardware

Warranty

  • 2-year

Form Factor

  • Full-length, full-height, 2.5-card width PCIe card

Dimensions

  • 297(L) x 120(W) x 50(H) mm

Bus Interface

  • PCI Express 4.0 x16

Internal Connectors

  • Two 8-pin PCIe power connectors

External Connectors

  • One HDMI
  • Two DisplayPort
  • One USB-C

GPU

  • AMD Radeon RX 69800 XT by AMD Certified Global Add-in Board Partner
  • 7nm GPU
  • AMD RDNA 2 Architecture

Engine Clock

  • Engine Clock: Up to 2015 MHz
  • Boost Clock: Up to 2250 MHz

Stream Processors

  • 4608

Infinity Cache

  • 128 MB

Ray Accelerators

  • 72

Memory Size/Bus

  • 16 GB GDDR6

Memory Cock

  • 16 Gbps Effective

Memory Interface

  • 256-bit

Memory Bandwidth

  • Up to 512 GBps

Displays

  • Maximum 4 Displays

Resolution(3)

  • HDMI: 7680×4320
  • DisplayPort 1.4: 7680×4320
  • USB-C: 7680×4320

DirectX® Support

  • 12

Interface

  • PCI-Express 4.0

BIOS Support

  • UEFI

AMD Features(4)

  • AMD RDNA 2 Gaming Architecture
  • DirectX 12 Ultimate
  • Hardware Raytracing
  • AMD FreeSync Technology
  • DisplayPort 1.4 with DSC
  • HDMI 2.1 VRR
  • Video Streaming up to 8K
  • Radeon VR Ready Premium
  • AMD FidelityFX
  • Radeon Image Sharpening
  • Radeon Anti-Lag
  • Game Driver Optimizations
  • High Performance 4K Gaming

Cooling

  • Three 90 mm fans

Zero RPM Fan Mode

  • Yes

Power Consumption

  • 360W

Package Contents

  • AMD Radeon RX 6800 XT GPU Card

Technical Notes

  • A USB hub in a Thunderbolt Display does not enumerate in macOS. In an eGPU expansion system chassis, cold start and sleep function normally. However, after a restart, a Thunderbolt/USB-C monitor does not light until the USB-C/Thunderbolt cable from the GPU card to the monitor is unplugged and replugged.
  • Requires an AMD Radeon RX 6900 XT card with auxiliary PCIe power cables for 2019 Mac Pro (sold separately); order one Sonnet GPU-CBL-MP.
  • This GPU card implements advanced display protocols, making this card future-ready. Some of these protocols are not yet supported by some OS drivers and/or available displays.
  • Some of these features are available only on Windows.
  • Compatible only with latest model LG Ultrafine Displays–models 24MD4KL and 27MD5KL [introduced June 2019], and not with older LG models 24MD4KA and 27MD5KA [2016-mid 2019].