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Radeon RX 470 vs Radeon RX 480 4GB

Intro

The Radeon RX 470 has a GPU core speed of 926 MHz, and the 8192 MB of GDDR5 RAM is set to run at 1650 MHz through a 256-bit bus. It also is made up of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Compare those specifications to the Radeon RX 480 4GB, which has a core clock speed of 1120 MHz and a GDDR5 memory speed of 1750 MHz. It also makes use of a 256-bit memory bus, and makes use of a 14 nm design. It features 2304 SPUs, 144 TAUs, and 32 ROPs.

Display Graphs

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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

In theory, the Radeon RX 480 4GB should be a bit faster 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 will be much (about 36%) better 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 using a high resolution is important to you, then the Radeon RX 480 4GB is superior to the Radeon RX 470, by a large margin. (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

Radeon RX 470

Radeon RX 480 4GB

Specifications

Display 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 x16
DirectX Version DirectX 12.0 DirectX 12.0
OpenGL Version OpenGL 4.5 OpenGL 4.5

Memory Bandwidth: Bandwidth is the largest amount of information (counted in MB per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better 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 number of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the 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 the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated 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 outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Radeon RX 470

Radeon RX 480 4GB

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