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Sonnet AMD Radeon RX 6900 XT Graphics Card Bundle for Apple Mac Pro (2019)

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In stock at supplier: Yes

Leaves our warehouse in 6-8 weeks

Shipping cost is $9.90 (flat rate) for any size order.
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Product code: S-RX6900XT-MPK

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Sonnet AMD Radeon RX 6900 XT Graphics Card Bundle for Apple Mac Pro (2019) provides an immersive gaming experience with your PC games.

Your price: $3,517.99

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Based on the RDNA 2 architecture and designed to handle the graphical demands of 4K gaming as well as 1440p at high frame rates, the Sonnet AMD Radeon RX 6900 XT Graphics Card Bundle for Apple Mac Pro (2019) provides an immersive gaming experience with your PC games. The GPU features 16GB of GDDR6 VRAM and a 256-bit memory interface, offering improved performance and power efficiency over the previous RDNA-based generation.

The front panel of the card features a variety of outputs, such as DisplayPort 1.4 and HDMI 2.1. HDMI 2.1 supports up to 48 Gb/s bandwidth and a range of higher resolutions and refresh rates, including 8K @ 60fps, 4K @ 120fps, and even up to 10K. The Radeon RX 6900 XT supports APIs such as DirectX 12 Ultimate and OpenGL. These APIs can take advantage of the GPU's 5120 Stream Processors to accelerate parallel computing tasks, taking some of the processing load off of the CPU. For cooling, this GPU implemented a triple fan cooler.

This graphics card will work with the Apple Mac Pro (2019), thanks to the included two 8-pin to 8-pin auxiliary power cables.


DirectX 12 Ultimate

DirectX12 Ultimate gives game developers the power to deliver immersive visuals with real-time DirectX Raytracing (DXR), Variable Rate Shading (VRS), Mesh Shaders, and Sampler Feedback, taking games to the next level.


AMD FidelityFX

AMD FidelityFX is an open-source image-quality toolkit comprising of seven different solutions available for game developers to implement into their games that are optimized for AMD RDNA and RDNA 2 architectures.


AMD Radeon Image Sharpening

Restores clarity to in-game images that have been softened by other post-process effects. RIS combines with GPU upscaling to provide sharp visuals at fluid frame rates on very high-resolution displays, and works across DirectX 9, 12, and Vulkan titles.


AMD FreeSync 2 Technology

Reduce screen tearing with AMD's FreeSync 2 Technology. FreeSync 2 enables the monitor to dynamically adjust its refresh rate to the frame rate being output by the graphics card, thereby greatly reducing screen tearing, stuttering, and other artifacts.


Radeon Anti-Lag

Optimized for eSports, Radeon Anti-Lag improves competitiveness by decreasing input-to-display response times by up to 31 percent, delivering an experience similar to higher frame rates.


AMD Radeon Boost

AMD Radeon Boost dynamically lowers resolution of the entire frame when fast on-screen character motion is detected via user input, allowing for higher FPS with little impact to quality.


In the Box

  • Sonnet AMD Radeon RX 6900 XT Graphics Card Bundle for Apple Mac Pro (2019)
  • 2 x 8-Pin to 8-Pin Auxiliary Power Cable
  • Limited 2-Year Warranty

 AMD Radeon RX 6900 XT GPU Card Specifications



Mac Compatibility

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


Windows Compatibility

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


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, 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





  • 2-year


Form Factor

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



  • 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



  • 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



  • Maximum 4 Displays



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


DirectX® Support

  • 12



  • 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



  • Three 90 mm fans


Zero RPM Fan Mode

  • Yes


Power Consumption

  • 360W


Package Contents

  • AMD Radeon RX 6900 XT GPU Card



Technical Notes

  1. 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.
  2. 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.
  3. 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.
  4. Some of these features are available only on Windows.

Additional Information

Colour No
Type No
Form Factor No
Connection DisplayPort, HDMI, USB-C
Suitable for No
Model Identifier No
Manufacturer Sonnet
Manufacturer P/N S-RX6900XT-MPK
UPC 732311013485
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