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Radeon HD 6990 vs Radeon RX 5600

Intro

The Radeon HD 6990 features a clock speed of 830 MHz and a GDDR5 memory speed of 1250 MHz. It also makes use of a 256-bit bus, and uses a 40 nm design. It is made up of 1536 SPUs, 96 Texture Address Units, and 32 Raster Operation Units.

Compare those specifications to the Radeon RX 5600, which comes with a core clock frequency of 1375 MHz and a GDDR6 memory frequency of 1500 MHz. It also uses a 192-bit bus, and makes use of a 7 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 64 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5600 150 Watts
Radeon HD 6990 375 Watts
Difference: 225 Watts (150%)

Memory Bandwidth

The Radeon HD 6990, in theory, should be a little bit faster than the Radeon RX 5600 in general. (explain)

Radeon HD 6990 320000 MB/sec
Radeon RX 5600 294912 MB/sec
Difference: 25088 (9%)

Texel Rate

The Radeon RX 5600 is just a bit (more or less 10%) faster with regards to AF than the Radeon HD 6990. (explain)

Radeon RX 5600 176000 Mtexels/sec
Radeon HD 6990 159360 Mtexels/sec
Difference: 16640 (10%)

Pixel Rate

The Radeon RX 5600 will be quite a bit (more or less 66%) more effective at FSAA than the Radeon HD 6990, and will be able to handle higher screen resolutions more effectively. (explain)

Radeon RX 5600 88000 Mpixels/sec
Radeon HD 6990 53120 Mpixels/sec
Difference: 34880 (66%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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Radeon HD 6990

Amazon.com

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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.

Specifications

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Model Radeon HD 6990 Radeon RX 5600
Manufacturer AMD AMD
Year March 2011 January 2020
Code Name Antilles Navi 10 XE
Memory 2048 MB (x2) 6144 MB
Core Speed 830 MHz (x2) 1375 MHz
Memory Speed 5000 MHz (x2) 3000 GB/s
Power (Max TDP) 375 watts 150 watts
Bandwidth 320000 MB/sec 294912 MB/sec
Texel Rate 159360 Mtexels/sec 176000 Mtexels/sec
Pixel Rate 53120 Mpixels/sec 88000 Mpixels/sec
Unified Shaders 1536 (x2) 2048
Texture Mapping Units 96 (x2) 128
Render Output Units 32 (x2) 64
Bus Type GDDR5 GDDR6
Bus Width 256-bit (x2) 192-bit
Fab Process 40 nm 7 nm
Transistors 2640 million 10300 million
Bus PCIe 2.1 x16 PCIe 4.0 ×16
DirectX Version DirectX 11 DirectX 12
OpenGL Version OpenGL 4.1 OpenGL 4.6

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in MB per second) that can be transferred across 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, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Display Prices

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Radeon HD 6990

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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