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Radeon HD 6990 vs Radeon RX 5600 XT

Intro

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

Compare all of that to the Radeon RX 5600 XT, which comes with a clock frequency of 1375 MHz and a GDDR6 memory speed of 14000 MHz. It also uses a 192-bit bus, and uses a 7 nm design. It is made up of 2304 SPUs, 144 Texture Address Units, and 64 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5600 XT 160 Watts
Radeon HD 6990 375 Watts
Difference: 215 Watts (134%)

Memory Bandwidth

Performance-wise, the Radeon RX 5600 XT should in theory be a small bit better than the Radeon HD 6990 overall. (explain)

Radeon RX 5600 XT 344064 MB/sec
Radeon HD 6990 320000 MB/sec
Difference: 24064 (8%)

Texel Rate

The Radeon RX 5600 XT will be a lot (about 24%) better at texture filtering than the Radeon HD 6990. (explain)

Radeon RX 5600 XT 198000 Mtexels/sec
Radeon HD 6990 159360 Mtexels/sec
Difference: 38640 (24%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 5600 XT is superior to the Radeon HD 6990, by far. (explain)

Radeon RX 5600 XT 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

Check prices at:

Radeon RX 5600 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 6990 Radeon RX 5600 XT
Manufacturer AMD AMD
Year March 2011 January 2020
Code Name Antilles Navi 10 XLE
Memory 2048 MB (x2) 6144 MB
Core Speed 830 MHz (x2) 1375 MHz
Memory Speed 5000 MHz (x2) 28000 GB/s
Power (Max TDP) 375 watts 160 watts
Bandwidth 320000 MB/sec 344064 MB/sec
Texel Rate 159360 Mtexels/sec 198000 Mtexels/sec
Pixel Rate 53120 Mpixels/sec 88000 Mpixels/sec
Unified Shaders 1536 (x2) 2304
Texture Mapping Units 96 (x2) 144
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: Bandwidth is the maximum amount of data (counted in MB per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of 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 6990

Amazon.com

Check prices at:

Radeon RX 5600 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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