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Radeon HD 7990 vs Radeon RX 5500

Intro

The Radeon HD 7990 features a clock speed of 950 MHz and a GDDR5 memory frequency of 1500 MHz. It also features a 384-bit bus, and uses a 28 nm design. It is made up of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Compare all of that to the Radeon RX 5500, which uses a 7 nm design. AMD has clocked the core speed at 1670 MHz. The GDDR6 RAM is set to run at a speed of 1750 MHz on this particular card. It features 1408 SPUs as well as 88 Texture Address Units and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 5500 150 Watts
Radeon HD 7990 375 Watts
Difference: 225 Watts (150%)

Memory Bandwidth

Performance-wise, the Radeon HD 7990 should in theory be quite a bit superior to the Radeon RX 5500 in general. (explain)

Radeon HD 7990 576000 MB/sec
Radeon RX 5500 229376 MB/sec
Difference: 346624 (151%)

Texel Rate

The Radeon HD 7990 should be quite a bit (about 65%) faster with regards to AF than the Radeon RX 5500. (explain)

Radeon HD 7990 243200 Mtexels/sec
Radeon RX 5500 146960 Mtexels/sec
Difference: 96240 (65%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 7990 is a better choice, but only just. (explain)

Radeon HD 7990 60800 Mpixels/sec
Radeon RX 5500 53440 Mpixels/sec
Difference: 7360 (14%)

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

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Radeon RX 5500

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 5500
Manufacturer AMD AMD
Year April 2013 October 2019
Code Name Malta Navi 14 XT
Memory 3072 MB (x2) 4096 MB
Core Speed 950 MHz (x2) 1670 MHz
Memory Speed 6000 MHz (x2) 3500 GB/s
Power (Max TDP) 375 watts 150 watts
Bandwidth 576000 MB/sec 229376 MB/sec
Texel Rate 243200 Mtexels/sec 146960 Mtexels/sec
Pixel Rate 60800 Mpixels/sec 53440 Mpixels/sec
Unified Shaders 2048 (x2) 1408
Texture Mapping Units 128 (x2) 88
Render Output Units 32 (x2) 32
Bus Type GDDR5 GDDR6
Bus Width 384-bit (x2) 128-bit
Fab Process 28 nm 7 nm
Transistors 4313 million 6400 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 max amount of information (measured in MB per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 7990

Amazon.com

Check prices at:

Radeon RX 5500

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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