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Radeon HD 5970 vs Radeon RX 460

Intro

The Radeon HD 5970 has a GPU clock speed of 725 MHz, and the 1024 MB of GDDR5 memory runs at 1000 MHz through a 256-bit bus. It also is made up of 1600 Stream Processors, 160 Texture Address Units, and 64 Raster Operation Units.

Compare all of that to the Radeon RX 460, which makes use of a 14 nm design. AMD has set the core speed at 1090 MHz. The GDDR5 memory is set to run at a frequency of 1750 MHz on this particular model. It features 896 SPUs as well as 56 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 75 Watts
Radeon HD 5970 294 Watts
Difference: 219 Watts (292%)

Memory Bandwidth

Performance-wise, the Radeon HD 5970 should theoretically be quite a bit better than the Radeon RX 460 overall. (explain)

Radeon HD 5970 256000 MB/sec
Radeon RX 460 112000 MB/sec
Difference: 144000 (129%)

Texel Rate

The Radeon HD 5970 will be much (about 280%) better at texture filtering than the Radeon RX 460. (explain)

Radeon HD 5970 232000 Mtexels/sec
Radeon RX 460 61040 Mtexels/sec
Difference: 170960 (280%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 5970 is superior to the Radeon RX 460, by a large margin. (explain)

Radeon HD 5970 92800 Mpixels/sec
Radeon RX 460 17440 Mpixels/sec
Difference: 75360 (432%)

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

Radeon HD 5970

Radeon RX 460

Specifications

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Model Radeon HD 5970 Radeon RX 460
Manufacturer AMD AMD
Year November 2009 August 2016
Code Name Hemlock XT Polaris 11
Memory 1024 MB (x2) 4096 MB
Core Speed 725 MHz (x2) 1090 MHz
Memory Speed 4000 MHz (x2) 7000 MHz
Power (Max TDP) 294 watts 75 watts
Bandwidth 256000 MB/sec 112000 MB/sec
Texel Rate 232000 Mtexels/sec 61040 Mtexels/sec
Pixel Rate 92800 Mpixels/sec 17440 Mpixels/sec
Unified Shaders 1600 (x2) 896
Texture Mapping Units 160 (x2) 56
Render Output Units 64 (x2) 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit (x2) 128-bit
Fab Process 40 nm 14 nm
Transistors 2154 million 3000 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 12.0
OpenGL Version OpenGL 4.1 OpenGL 4.5

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in MB per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 once again. If 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 are applied in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher 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 video card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Radeon HD 5970

Radeon RX 460

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