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Radeon HD 7970 vs Radeon RX 590

Intro

The Radeon HD 7970 comes with a GPU core speed of 925 MHz, and the 3072 MB of GDDR5 memory runs at 1375 MHz through a 384-bit bus. It also is made up of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Compare all of that to the Radeon RX 590, which comes with core clock speeds of 1469 MHz on the GPU, and 2000 MHz on the 8192 MB of GDDR5 RAM. It features 2304 SPUs along with 144 Texture Address Units and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 590 175 Watts
Radeon HD 7970 250 Watts
Difference: 75 Watts (43%)

Memory Bandwidth

Theoretically, the Radeon HD 7970 should perform a bit faster than the Radeon RX 590 in general. (explain)

Radeon HD 7970 264000 MB/sec
Radeon RX 590 262144 MB/sec
Difference: 1856 (1%)

Texel Rate

The Radeon RX 590 will be a lot (more or less 79%) faster with regards to anisotropic filtering than the Radeon HD 7970. (explain)

Radeon RX 590 211536 Mtexels/sec
Radeon HD 7970 118400 Mtexels/sec
Difference: 93136 (79%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 590 is a better choice, and very much so. (explain)

Radeon RX 590 47008 Mpixels/sec
Radeon HD 7970 29600 Mpixels/sec
Difference: 17408 (59%)

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 HD 7970

Amazon.com

Check prices at:

Radeon RX 590

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 HD 7970 Radeon RX 590
Manufacturer AMD AMD
Year January 2012 November 2018
Code Name Tahiti XT Polaris 30
Memory 3072 MB 8192 MB
Core Speed 925 MHz 1469 MHz
Memory Speed 5500 MHz 8000 MHz
Power (Max TDP) 250 watts 175 watts
Bandwidth 264000 MB/sec 262144 MB/sec
Texel Rate 118400 Mtexels/sec 211536 Mtexels/sec
Pixel Rate 29600 Mpixels/sec 47008 Mpixels/sec
Unified Shaders 2048 2304
Texture Mapping Units 128 144
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit
Fab Process 28 nm 12 nm
Transistors 4313 million 5700 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.1 DirectX 12.0
OpenGL Version OpenGL 4.2 OpenGL 4.5

Memory Bandwidth: Bandwidth is the largest amount of information (measured in megabytes per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the 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 the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 7970

Amazon.com

Check prices at:

Radeon RX 590

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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