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Radeon R9 285 vs Radeon RX 470

Intro

The Radeon R9 285 features core clock speeds of 918 MHz on the GPU, and 1375 MHz on the 2048 MB of GDDR5 memory. It features 1792 SPUs along with 112 Texture Address Units and 32 ROPs.

Compare those specs to the Radeon RX 470, which has a core clock speed of 926 MHz and a GDDR5 memory frequency of 1650 MHz. It also makes use of a 256-bit bus, and uses a 14 nm design. It is comprised of 2048 SPUs, 128 TAUs, and 32 Raster Operation 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 RX 470 11756 points
Radeon R9 285 8500 points
Difference: 3256 (38%)

Ethereum Mining Hash Rate

Radeon RX 470 26 Mh/s
Radeon R9 285 18 Mh/s
Difference: 8 (44%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470 120 Watts
Radeon R9 285 190 Watts
Difference: 70 Watts (58%)

Memory Bandwidth

In theory, the Radeon RX 470 should be 20% faster than the Radeon R9 285 overall, because of its greater data rate. (explain)

Radeon RX 470 211200 MB/sec
Radeon R9 285 176000 MB/sec
Difference: 35200 (20%)

Texel Rate

The Radeon RX 470 will be a little bit (more or less 15%) better at AF than the Radeon R9 285. (explain)

Radeon RX 470 118528 Mtexels/sec
Radeon R9 285 102816 Mtexels/sec
Difference: 15712 (15%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 470 is the winner, but only just. (explain)

Radeon RX 470 29632 Mpixels/sec
Radeon R9 285 29376 Mpixels/sec
Difference: 256 (1%)

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 470

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 470
Manufacturer AMD AMD
Year September 2014 August 2016
Code Name Tonga PRO Polaris 10
Memory 2048 MB 8192 MB
Core Speed 918 MHz 926 MHz
Memory Speed 5500 MHz 6600 MHz
Power (Max TDP) 190 watts 120 watts
Bandwidth 176000 MB/sec 211200 MB/sec
Texel Rate 102816 Mtexels/sec 118528 Mtexels/sec
Pixel Rate 29376 Mpixels/sec 29632 Mpixels/sec
Unified Shaders 1792 2048
Texture Mapping Units 112 128
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 14 nm
Transistors 5000 million 5700 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 largest amount of data (measured in MB per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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Radeon R9 285

Amazon.com

Check prices at:

Radeon RX 470

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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