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Radeon Pro Duo vs Radeon R9 285

Intro

The Radeon Pro Duo comes with clock speeds of 1000 MHz on the GPU, and 500 MHz on the 4096 MB of HBM RAM. It features 4096 SPUs along with 256 Texture Address Units and 64 ROPs.

Compare all that to the Radeon R9 285, which features clock speeds of 918 MHz on the GPU, and 1375 MHz on the 2048 MB of GDDR5 RAM. It features 1792 SPUs as well as 112 Texture Address Units and 32 Rasterization Operator Units.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon Pro Duo 27167 points
Radeon R9 285 8500 points
Difference: 18667 (220%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 285 190 Watts
Radeon Pro Duo 350 Watts
Difference: 160 Watts (84%)

Memory Bandwidth

The Radeon Pro Duo, in theory, should be a lot faster than the Radeon R9 285 overall. (explain)

Radeon Pro Duo 1024000 MB/sec
Radeon R9 285 176000 MB/sec
Difference: 848000 (482%)

Texel Rate

The Radeon Pro Duo will be much (more or less 398%) more effective at AF than the Radeon R9 285. (explain)

Radeon Pro Duo 512000 Mtexels/sec
Radeon R9 285 102816 Mtexels/sec
Difference: 409184 (398%)

Pixel Rate

The Radeon Pro Duo will be a lot (about 336%) better at AA than the Radeon R9 285, and also able to handle higher resolutions without losing too much performance. (explain)

Radeon Pro Duo 128000 Mpixels/sec
Radeon R9 285 29376 Mpixels/sec
Difference: 98624 (336%)

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

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Radeon R9 285

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 R9 285
Manufacturer AMD AMD
Year April 2016 September 2014
Code Name Fiji XT Tonga PRO
Memory 4096 MB (x2) 2048 MB
Core Speed 1000 MHz (x2) 918 MHz
Memory Speed 500 MHz (x2) 5500 MHz
Power (Max TDP) 350 watts 190 watts
Bandwidth 1024000 MB/sec 176000 MB/sec
Texel Rate 512000 Mtexels/sec 102816 Mtexels/sec
Pixel Rate 128000 Mpixels/sec 29376 Mpixels/sec
Unified Shaders 4096 (x2) 1792
Texture Mapping Units 256 (x2) 112
Render Output Units 64 (x2) 32
Bus Type HBM GDDR5
Bus Width 4096-bit (x2) 256-bit
Fab Process 28 nm 28 nm
Transistors 8900 million 5000 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12.0 DirectX 12.0
OpenGL Version OpenGL 4.5 OpenGL 4.4

Memory Bandwidth: Bandwidth is the largest amount of information (in units of MB per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total number of texture units of the card 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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Radeon Pro Duo

Amazon.com

Check prices at:

Radeon R9 285

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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