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Radeon HD 5970 vs Radeon RX 460


Intro

The Radeon HD 5970 makes use of a 40 nm design. AMD has set the core frequency at 725 MHz. The GDDR5 RAM is set to run at a frequency of 1000 MHz on this card. It features 1600 SPUs along with 160 TAUs and 64 Rasterization Operator Units.

Compare all of that to the Radeon RX 460, which has clock speeds of 1090 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 RAM. It features 896 SPUs along with 56 TAUs and 16 Rasterization Operator Units.

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

Theoretically speaking, the Radeon HD 5970 is 129% quicker than the Radeon RX 460 in general, due to its higher bandwidth. (explain)

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

Texel Rate

The Radeon HD 5970 will be quite a bit (approximately 280%) more effective at AF 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 the winner, 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

Display 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 largest amount of information (in units of megabytes per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the bus width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock 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 output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Radeon HD 5970

Radeon RX 460

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