Technical Specifications

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GPU Card and Bundles Specifications

    AMD Radeon RX 6900 XT GPU Card Specifications

    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 Compatibility

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

    Radeon RX 6900 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 6900 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

    • 5120

    Infinity Cache

    • 128 MB

    Ray Accelerators

    • 80

    Memory Size/Bus

    • 16 GB GDDR6

    Memory Clock

    • 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 6900 XT GPU Card

    Bundles Specifications

      2019 Mac Pro GPU Bundle

      Hardware

      Preconfigured Bundle Includes:

      • AMD Radeon RX 6900 XT GPU card
      • Two auxiliary PCIe power cables for 2019 Mac Pro

      Warranty

      • 2-year

      Mac Compatibility

      • Mac Pro 7,1 (2019) – 2.5x wide GPU card for slot 3 (&4)(2)
      2019 Mac Pro PCIe Slots
      • macOS 11.6+

      eGPU Breakaway Box 750/750ex Bundle

      Hardware

      Configure Bundle with:

      • eGPU Breakaway Box 750 or 750ex
      • AMD Radeon RX 6900 XT GPU card

      See eGPU Breakaway Box 750/750ex Product Page Technical Specifications for complete specifications and important technical notes, plus links to external graphics setup and usage guides for macOS and Windows.

      Warranty

      • 2-year

      DuoModo xMac mini/eGPU Desktop Bundle

      Hardware

      Configure Bundle with:

      • DuoModo xMac mini/eGPU Desktop system
      • AMD Radeon RX 6900 XT GPU card

      See DuoModo Product Page Technical Specifications for complete module and enclosure specifications and important technical notes, plus a link to Sonnet’s External Graphics Setup and Usage Guide for macOS.

      Warranty

      • 2-year

      DuoModo xMac mini/eGPU Rackmount Bundle

      Hardware

      Configure Bundle with:

      • DuoModo xMac mini/eGPU Rackmount system
      • AMD Radeon RX 6900 XT GPU card

      See DuoModo Product Page Technical Specifications for complete module and enclosure specifications and important technical notes, plus a link to Sonnet’s External Graphics Setup and Usage Guide for macOS.

      Warranty

      • 2-year

      DuoModo eGPU Module Bundle

      Hardware

      Configure Bundle with:

      • DuoModo eGPU Module (DuoModo enclosure required, sold separately)
      • AMD Radeon RX 6900 XT GPU card

      See DuoModo Product Page Technical Specifications for complete eGPU module specifications and important technical notes, plus links to external graphics setup and usage guides for macOS and Windows.

      Warranty

      • 2-year

      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 2019 Mac Pro GPU Bundle (part no. S-RX6900XT-MPK) or an AMD Radeon RX 6900 XT card with auxiliary PCIe power cables for 2019 Mac Pro; 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].

      AMD Radeon RX 6900 XT Card

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