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Radeon HD 7970 vs Radeon RX 5600

Intro

The Radeon HD 7970 makes use of a 28 nm design. AMD has set the core frequency at 925 MHz. The GDDR5 RAM works at a frequency of 1375 MHz on this specific model. It features 2048 SPUs as well as 128 Texture Address Units and 32 ROPs.

Compare that to the Radeon RX 5600, which comes with GPU core speed of 1375 MHz, and 6144 MB of GDDR6 RAM set to run at 1500 MHz through a 192-bit bus. It also features 2048 SPUs, 128 TAUs, and 64 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5600 150 Watts
Radeon HD 7970 250 Watts
Difference: 100 Watts (67%)

Memory Bandwidth

In theory, the Radeon RX 5600 is 12% quicker than the Radeon HD 7970 overall, because of its greater bandwidth. (explain)

Radeon RX 5600 294912 MB/sec
Radeon HD 7970 264000 MB/sec
Difference: 30912 (12%)

Texel Rate

The Radeon RX 5600 is a lot (about 49%) faster with regards to anisotropic filtering than the Radeon HD 7970. (explain)

Radeon RX 5600 176000 Mtexels/sec
Radeon HD 7970 118400 Mtexels/sec
Difference: 57600 (49%)

Pixel Rate

The Radeon RX 5600 should be a lot (approximately 197%) more effective at anti-aliasing than the Radeon HD 7970, and capable of handling higher screen resolutions better. (explain)

Radeon RX 5600 88000 Mpixels/sec
Radeon HD 7970 29600 Mpixels/sec
Difference: 58400 (197%)

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

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Radeon RX 5600

Amazon.com

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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 5600
Manufacturer AMD AMD
Year January 2012 January 2020
Code Name Tahiti XT Navi 10 XE
Memory 3072 MB 6144 MB
Core Speed 925 MHz 1375 MHz
Memory Speed 5500 MHz 3000 GB/s
Power (Max TDP) 250 watts 150 watts
Bandwidth 264000 MB/sec 294912 MB/sec
Texel Rate 118400 Mtexels/sec 176000 Mtexels/sec
Pixel Rate 29600 Mpixels/sec 88000 Mpixels/sec
Unified Shaders 2048 2048
Texture Mapping Units 128 128
Render Output Units 32 64
Bus Type GDDR5 GDDR6
Bus Width 384-bit 192-bit
Fab Process 28 nm 7 nm
Transistors 4313 million 10300 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 maximum amount of data (measured in MB per second) that can be transferred past the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR 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 AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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Radeon HD 7970

Amazon.com

Check prices at:

Radeon RX 5600

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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