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Radeon R9 285 vs Radeon RX 460 2GB

Intro

The Radeon R9 285 comes with a GPU core clock speed of 918 MHz, and the 2048 MB of GDDR5 memory runs at 1375 MHz through a 256-bit bus. It also features 1792 SPUs, 112 TAUs, and 32 Raster Operation Units.

Compare those specifications to the Radeon RX 460 2GB, which features a GPU core clock speed of 1090 MHz, and 2048 MB of GDDR5 RAM set to run at 1750 MHz through a 128-bit bus. It also is made up of 896 SPUs, 56 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 2GB 75 Watts
Radeon R9 285 190 Watts
Difference: 115 Watts (153%)

Memory Bandwidth

In theory, the Radeon R9 285 should be 57% faster than the Radeon RX 460 2GB in general, because of its greater bandwidth. (explain)

Radeon R9 285 176000 MB/sec
Radeon RX 460 2GB 112000 MB/sec
Difference: 64000 (57%)

Texel Rate

The Radeon R9 285 is much (approximately 68%) faster with regards to texture filtering than the Radeon RX 460 2GB. (explain)

Radeon R9 285 102816 Mtexels/sec
Radeon RX 460 2GB 61040 Mtexels/sec
Difference: 41776 (68%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 285 is superior to the Radeon RX 460 2GB, by far. (explain)

Radeon R9 285 29376 Mpixels/sec
Radeon RX 460 2GB 17440 Mpixels/sec
Difference: 11936 (68%)

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.

Price Comparison

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Radeon R9 285

Amazon.com

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Radeon RX 460 2GB

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 R9 285 Radeon RX 460 2GB
Manufacturer AMD AMD
Year September 2014 August 2016
Code Name Tonga PRO Polaris 11
Memory 2048 MB 2048 MB
Core Speed 918 MHz 1090 MHz
Memory Speed 5500 MHz 7000 MHz
Power (Max TDP) 190 watts 75 watts
Bandwidth 176000 MB/sec 112000 MB/sec
Texel Rate 102816 Mtexels/sec 61040 Mtexels/sec
Pixel Rate 29376 Mpixels/sec 17440 Mpixels/sec
Unified Shaders 1792 896
Texture Mapping Units 112 56
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 28 nm 14 nm
Transistors 5000 million 3000 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12.0 DirectX 12.0
OpenGL Version OpenGL 4.4 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the maximum amount of information (in units of megabytes per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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Radeon R9 285

Amazon.com

Check prices at:

Radeon RX 460 2GB

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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