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Radeon HD 7790 vs Radeon RX 550

Intro

The Radeon HD 7790 features core speeds of 1000 MHz on the GPU, and 1500 MHz on the 1024 MB of GDDR5 memory. It features 896 SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

Compare those specs to the Radeon RX 550, which features a core clock speed of 1100 MHz and a GDDR5 memory frequency of 1750 MHz. It also features a 128-bit memory bus, and uses a 14 nm design. It is made up of 512 SPUs, 32 Texture Address Units, and 16 ROPs.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 7790 4330 points
Radeon RX 550 3507 points
Difference: 823 (23%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550 50 Watts
Radeon HD 7790 85 Watts
Difference: 35 Watts (70%)

Memory Bandwidth

In theory, the Radeon RX 550 is 19% quicker than the Radeon HD 7790 overall, due to its higher bandwidth. (explain)

Radeon RX 550 114688 MB/sec
Radeon HD 7790 96000 MB/sec
Difference: 18688 (19%)

Texel Rate

The Radeon HD 7790 is a lot (more or less 59%) faster with regards to AF than the Radeon RX 550. (explain)

Radeon HD 7790 56000 Mtexels/sec
Radeon RX 550 35200 Mtexels/sec
Difference: 20800 (59%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon RX 550 is a better choice, though only just barely. (explain)

Radeon RX 550 17600 Mpixels/sec
Radeon HD 7790 16000 Mpixels/sec
Difference: 1600 (10%)

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 7790

Amazon.com

Check prices at:

Radeon RX 550

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 7790 Radeon RX 550
Manufacturer AMD AMD
Year March 2013 April 2017
Code Name Bonaire XT Polaris 12
Memory 1024 MB 2048 MB
Core Speed 1000 MHz 1100 MHz
Memory Speed 6000 MHz 7000 MHz
Power (Max TDP) 85 watts 50 watts
Bandwidth 96000 MB/sec 114688 MB/sec
Texel Rate 56000 Mtexels/sec 35200 Mtexels/sec
Pixel Rate 16000 Mpixels/sec 17600 Mpixels/sec
Unified Shaders 896 512
Texture Mapping Units 56 32
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 14 nm
Transistors 2080 million 2200 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.1 DirectX 12.0
OpenGL Version OpenGL 4.3 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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Radeon HD 7790

Amazon.com

Check prices at:

Radeon RX 550

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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