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Radeon Pro Duo vs Radeon RX 6900 XT

Intro

The Radeon Pro Duo uses a 28 nm design. AMD has set the core frequency at 1000 MHz. The HBM RAM works at a frequency of 500 MHz on this specific card. It features 4096 SPUs as well as 256 Texture Address Units and 64 ROPs.

Compare those specifications to the Radeon RX 6900 XT, which comes with a clock speed of 1825 MHz and a GDDR6 memory frequency of 2000 MHz. It also uses a 256-bit memory bus, and uses a 7 nm design. It is comprised of 5120 SPUs, 320 Texture Address Units, and 128 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6900 XT 300 Watts
Radeon Pro Duo 350 Watts
Difference: 50 Watts (17%)

Memory Bandwidth

In theory, the Radeon Pro Duo is 95% faster than the Radeon RX 6900 XT in general, because of its higher data rate. (explain)

Radeon Pro Duo 1024000 MB/sec
Radeon RX 6900 XT 524288 MB/sec
Difference: 499712 (95%)

Texel Rate

The Radeon RX 6900 XT should be just a bit (approximately 14%) faster with regards to texture filtering than the Radeon Pro Duo. (explain)

Radeon RX 6900 XT 584000 Mtexels/sec
Radeon Pro Duo 512000 Mtexels/sec
Difference: 72000 (14%)

Pixel Rate

The Radeon RX 6900 XT is much (approximately 83%) more effective at full screen anti-aliasing than the Radeon Pro Duo, and capable of handling higher screen resolutions while still performing well. (explain)

Radeon RX 6900 XT 233600 Mpixels/sec
Radeon Pro Duo 128000 Mpixels/sec
Difference: 105600 (83%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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Radeon Pro Duo

Amazon.com

Check prices at:

Radeon RX 6900 XT

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon Pro Duo Radeon RX 6900 XT
Manufacturer AMD AMD
Year April 2016 2020
Code Name Fiji XT Navi 21
Memory 4096 MB (x2) 16384 MB
Core Speed 1000 MHz (x2) 1825 MHz
Memory Speed 500 MHz (x2) 4000 GB/s
Power (Max TDP) 350 watts 300 watts
Bandwidth 1024000 MB/sec 524288 MB/sec
Texel Rate 512000 Mtexels/sec 584000 Mtexels/sec
Pixel Rate 128000 Mpixels/sec 233600 Mpixels/sec
Unified Shaders 4096 (x2) 5120
Texture Mapping Units 256 (x2) 320
Render Output Units 64 (x2) 128
Bus Type HBM GDDR6
Bus Width 4096-bit (x2) 256-bit
Fab Process 28 nm 7 nm
Transistors 8900 million 26800 million
Bus PCIe 3.0 x16 PCIe 4.0 x16
DirectX Version DirectX 12.0 DirectX 12
OpenGL Version OpenGL 4.5 OpenGL 4.6

Memory Bandwidth: Bandwidth is the max amount of data (in units of MB per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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Radeon Pro Duo

Amazon.com

Check prices at:

Radeon RX 6900 XT

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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