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Radeon HD 7990 vs Radeon RX 5600

Intro

The Radeon HD 7990 has core clock speeds of 950 MHz on the GPU, and 1500 MHz on the 3072 MB of GDDR5 RAM. It features 2048 SPUs along with 128 Texture Address Units and 32 ROPs.

Compare all that to the Radeon RX 5600, which comes with core clock speeds of 1375 MHz on the GPU, and 12000 MHz on the 6144 MB of GDDR6 RAM. It features 2048 SPUs as well as 128 Texture Address Units and 64 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5600 150 Watts
Radeon HD 7990 375 Watts
Difference: 225 Watts (150%)

Memory Bandwidth

In theory, the Radeon HD 7990 is 95% quicker than the Radeon RX 5600 overall, because of its greater data rate. (explain)

Radeon HD 7990 576000 MB/sec
Radeon RX 5600 294912 MB/sec
Difference: 281088 (95%)

Texel Rate

The Radeon HD 7990 is a lot (approximately 38%) more effective at anisotropic filtering than the Radeon RX 5600. (explain)

Radeon HD 7990 243200 Mtexels/sec
Radeon RX 5600 176000 Mtexels/sec
Difference: 67200 (38%)

Pixel Rate

The Radeon RX 5600 is quite a bit (about 45%) better at full screen anti-aliasing than the Radeon HD 7990, and also capable of handling higher resolutions without losing too much performance. (explain)

Radeon RX 5600 88000 Mpixels/sec
Radeon HD 7990 60800 Mpixels/sec
Difference: 27200 (45%)

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 7990

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.

Specifications

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Model Radeon HD 7990 Radeon RX 5600
Manufacturer AMD AMD
Year April 2013 January 2020
Code Name Malta Navi 10 XE
Memory 3072 MB (x2) 6144 MB
Core Speed 950 MHz (x2) 1375 MHz
Memory Speed 6000 MHz (x2) 24000 GB/s
Power (Max TDP) 375 watts 150 watts
Bandwidth 576000 MB/sec 294912 MB/sec
Texel Rate 243200 Mtexels/sec 176000 Mtexels/sec
Pixel Rate 60800 Mpixels/sec 88000 Mpixels/sec
Unified Shaders 2048 (x2) 2048
Texture Mapping Units 128 (x2) 128
Render Output Units 32 (x2) 64
Bus Type GDDR5 GDDR6
Bus Width 384-bit (x2) 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 4.3 OpenGL 4.6

Memory Bandwidth: Bandwidth is the maximum amount of data (in units of MB per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. 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 texture map elements (texels) that are applied per second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 7990

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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