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Radeon RX 470 vs Radeon RX 480 4GB

Intro

The Radeon RX 470 comes with a clock speed of 926 MHz and a GDDR5 memory speed of 1650 MHz. It also uses a 256-bit bus, and makes use of a 14 nm design. It is comprised of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Compare those specifications to the Radeon RX 480 4GB, which comes with GPU clock speed of 1120 MHz, and 4096 MB of GDDR5 RAM set to run at 1750 MHz through a 256-bit bus. It also features 2304 Stream Processors, 144 Texture Address Units, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 470 120 Watts
Radeon RX 480 4GB 150 Watts
Difference: 30 Watts (25%)

Memory Bandwidth

Performance-wise, the Radeon RX 480 4GB should in theory be just a bit better than the Radeon RX 470 in general. (explain)

Radeon RX 480 4GB 229376 MB/sec
Radeon RX 470 211200 MB/sec
Difference: 18176 (9%)

Texel Rate

The Radeon RX 480 4GB is quite a bit (more or less 36%) more effective at anisotropic filtering than the Radeon RX 470. (explain)

Radeon RX 480 4GB 161280 Mtexels/sec
Radeon RX 470 118528 Mtexels/sec
Difference: 42752 (36%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 480 4GB is superior to the Radeon RX 470, and very much so. (explain)

Radeon RX 480 4GB 35840 Mpixels/sec
Radeon RX 470 29632 Mpixels/sec
Difference: 6208 (21%)

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 RX 470

Amazon.com

Radeon RX 480 4GB

Amazon.com

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 RX 470 Radeon RX 480 4GB
Manufacturer AMD AMD
Year August 2016 June 2016
Code Name Polaris 10 Polaris 10
Memory 8192 MB 4096 MB
Core Speed 926 MHz 1120 MHz
Memory Speed 6600 MHz 7000 MHz
Power (Max TDP) 120 watts 150 watts
Bandwidth 211200 MB/sec 229376 MB/sec
Texel Rate 118528 Mtexels/sec 161280 Mtexels/sec
Pixel Rate 29632 Mpixels/sec 35840 Mpixels/sec
Unified Shaders 2048 2304
Texture Mapping Units 128 144
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 14 nm 14 nm
Transistors 5700 million 5700 million
Bus PCIe 3.0 x16 PCIe 3.0 ×16
DirectX Version DirectX 12.0 DirectX 12.0
OpenGL Version OpenGL 4.5 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the max amount of data (in units of MB per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs 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 many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

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