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Radeon HD 7950 vs Radeon RX 6600

Intro

The Radeon HD 7950 has clock speeds of 800 MHz on the GPU, and 1250 MHz on the 1536 MB of GDDR5 RAM. It features 1792 SPUs along with 112 Texture Address Units and 32 Rasterization Operator Units.

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 6600 132 Watts
Radeon HD 7950 200 Watts
Difference: 68 Watts (52%)

Memory Bandwidth

Performance-wise, the Radeon HD 7950 should in theory be just a bit superior to the Radeon RX 6600 in general. (explain)

Radeon HD 7950 240000 MB/sec
Radeon RX 6600 229376 MB/sec
Difference: 10624 (5%)

Texel Rate

The Radeon RX 6600 will be much (about 103%) more effective at AF than the Radeon HD 7950. (explain)

Radeon RX 6600 182112 Mtexels/sec
Radeon HD 7950 89600 Mtexels/sec
Difference: 92512 (103%)

Pixel Rate

The Radeon RX 6600 will be a lot (more or less 307%) better at anti-aliasing than the Radeon HD 7950, and also able to handle higher resolutions more effectively. (explain)

Radeon RX 6600 104064 Mpixels/sec
Radeon HD 7950 25600 Mpixels/sec
Difference: 78464 (307%)

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 7950

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.

Specifications

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Model Radeon HD 7950 Radeon RX 6600
Manufacturer AMD AMD
Year January 2012 October 2021
Code Name Tahiti Pro Navi 23
Memory 1536 MB 8192 MB
Core Speed 800 MHz 1626 MHz
Memory Speed 5000 MHz 3500 GB/s
Power (Max TDP) 200 watts 132 watts
Bandwidth 240000 MB/sec 229376 MB/sec
Texel Rate 89600 Mtexels/sec 182112 Mtexels/sec
Pixel Rate 25600 Mpixels/sec 104064 Mpixels/sec
Unified Shaders 1792 1792
Texture Mapping Units 112 112
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: Bandwidth is the largest amount of information (counted in MB per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the bus width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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Radeon HD 7950

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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