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Radeon HD 7970 vs Radeon RX 5500 XT

Intro

The Radeon HD 7970 features clock speeds of 925 MHz on the GPU, and 1375 MHz on the 3072 MB of GDDR5 RAM. It features 2048 SPUs along with 128 Texture Address Units and 32 ROPs.

Compare those specifications to the Radeon RX 5500 XT, which features a core clock frequency of 1717 MHz and a GDDR6 memory speed of 1750 MHz. It also makes use of a 128-bit bus, and uses a 7 nm design. It is made up of 1408 SPUs, 88 Texture Address Units, and 32 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5500 XT 130 Watts
Radeon HD 7970 250 Watts
Difference: 120 Watts (92%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7970 will be 15% faster than the Radeon RX 5500 XT overall, due to its higher bandwidth. (explain)

Radeon HD 7970 264000 MB/sec
Radeon RX 5500 XT 229376 MB/sec
Difference: 34624 (15%)

Texel Rate

The Radeon RX 5500 XT is quite a bit (about 28%) faster with regards to anisotropic filtering than the Radeon HD 7970. (explain)

Radeon RX 5500 XT 151096 Mtexels/sec
Radeon HD 7970 118400 Mtexels/sec
Difference: 32696 (28%)

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 5500 XT is the winner, by a large margin. (explain)

Radeon RX 5500 XT 54944 Mpixels/sec
Radeon HD 7970 29600 Mpixels/sec
Difference: 25344 (86%)

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 5500 XT

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 5500 XT
Manufacturer AMD AMD
Year January 2012 December 2019
Code Name Tahiti XT Navi 14 XTX
Memory 3072 MB 8192 MB
Core Speed 925 MHz 1717 MHz
Memory Speed 5500 MHz 3500 GB/s
Power (Max TDP) 250 watts 130 watts
Bandwidth 264000 MB/sec 229376 MB/sec
Texel Rate 118400 Mtexels/sec 151096 Mtexels/sec
Pixel Rate 29600 Mpixels/sec 54944 Mpixels/sec
Unified Shaders 2048 1408
Texture Mapping Units 128 88
Render Output Units 32 32
Bus Type GDDR5 GDDR6
Bus Width 384-bit 128-bit
Fab Process 28 nm 7 nm
Transistors 4313 million 6400 million
Bus PCIe 3.0 x16 PCIe 4.0 ×16
DirectX Version DirectX 11.1 DirectX 12
OpenGL Version OpenGL 4.2 OpenGL 4.6

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total amount of texture units by the core 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 processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs 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 rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 7970

Amazon.com

Check prices at:

Radeon RX 5500 XT

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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