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Radeon HD 7970 vs Radeon RX 6600

Intro

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

Compare all that to the Radeon RX 6600, which features a clock frequency of 1626 MHz and a GDDR6 memory speed of 1750 MHz. It also uses a 128-bit memory bus, and uses a 7 nm design. It is made up of 1792 SPUs, 112 TAUs, and 64 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 132 Watts
Radeon HD 7970 250 Watts
Difference: 118 Watts (89%)

Memory Bandwidth

Theoretically, the Radeon HD 7970 should perform a small bit faster than the Radeon RX 6600 in general. (explain)

Radeon HD 7970 264000 MB/sec
Radeon RX 6600 229376 MB/sec
Difference: 34624 (15%)

Texel Rate

The Radeon RX 6600 is a lot (about 54%) more effective at texture filtering than the Radeon HD 7970. (explain)

Radeon RX 6600 182112 Mtexels/sec
Radeon HD 7970 118400 Mtexels/sec
Difference: 63712 (54%)

Pixel Rate

The Radeon RX 6600 will be much (about 252%) more effective at FSAA than the Radeon HD 7970, and also will be capable of handling higher resolutions more effectively. (explain)

Radeon RX 6600 104064 Mpixels/sec
Radeon HD 7970 29600 Mpixels/sec
Difference: 74464 (252%)

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 6600

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 6600
Manufacturer AMD AMD
Year January 2012 October 2021
Code Name Tahiti XT Navi 23
Memory 3072 MB 8192 MB
Core Speed 925 MHz 1626 MHz
Memory Speed 5500 MHz 3500 GB/s
Power (Max TDP) 250 watts 132 watts
Bandwidth 264000 MB/sec 229376 MB/sec
Texel Rate 118400 Mtexels/sec 182112 Mtexels/sec
Pixel Rate 29600 Mpixels/sec 104064 Mpixels/sec
Unified Shaders 2048 1792
Texture Mapping Units 128 112
Render Output Units 32 64
Bus Type GDDR5 GDDR6
Bus Width 384-bit 128-bit
Fab Process 28 nm 7 nm
Transistors 4313 million 11060 million
Bus PCIe 3.0 x16 PCIe 4.0 x16
DirectX Version DirectX 11.1 DirectX 12
OpenGL Version OpenGL 4.2 OpenGL 4.6

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of MB per second) that can be transported over the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If it uses 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the video 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 amount of pixels the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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Radeon HD 7970

Amazon.com

Check prices at:

Radeon RX 6600

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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