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Radeon HD 4890 1GB vs Radeon RX 550

Intro

The Radeon HD 4890 1GB comes with a GPU core clock speed of 1000 MHz, and the 1024 MB of GDDR5 memory runs at 975 MHz through a 256-bit bus. It also features 800(160x5) Stream Processors, 40 Texture Address Units, and 16 ROPs.

Compare that to the Radeon RX 550, which uses a 14 nm design. AMD has set the core speed at 1100 MHz. The GDDR5 RAM runs at a frequency of 1750 MHz on this card. It features 512 SPUs along with 32 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550 50 Watts
Radeon HD 4890 1GB 190 Watts
Difference: 140 Watts (280%)

Memory Bandwidth

As far as performance goes, the Radeon HD 4890 1GB should in theory be a small bit superior to the Radeon RX 550 overall. (explain)

Radeon HD 4890 1GB 124800 MB/sec
Radeon RX 550 114688 MB/sec
Difference: 10112 (9%)

Texel Rate

The Radeon HD 4890 1GB should be a small bit (more or less 14%) better at texture filtering than the Radeon RX 550. (explain)

Radeon HD 4890 1GB 40000 Mtexels/sec
Radeon RX 550 35200 Mtexels/sec
Difference: 4800 (14%)

Pixel Rate

If using a high resolution is important to you, then the Radeon RX 550 is a better choice, though not by far. (explain)

Radeon RX 550 17600 Mpixels/sec
Radeon HD 4890 1GB 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 4890 1GB

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 4890 1GB Radeon RX 550
Manufacturer AMD AMD
Year Apr 2, 2009 April 2017
Code Name RV790 XT Polaris 12
Memory 1024 MB 2048 MB
Core Speed 1000 MHz 1100 MHz
Memory Speed 3900 MHz 7000 MHz
Power (Max TDP) 190 watts 50 watts
Bandwidth 124800 MB/sec 114688 MB/sec
Texel Rate 40000 Mtexels/sec 35200 Mtexels/sec
Pixel Rate 16000 Mpixels/sec 17600 Mpixels/sec
Unified Shaders 800(160x5) 512
Texture Mapping Units 40 32
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 128-bit
Fab Process 55 nm 14 nm
Transistors 959 million 2200 million
Bus PCIe 2.0 x16 PCIe 3.0 x16
DirectX Version DirectX 10.1 DirectX 12.0
OpenGL Version OpenGL 3.0 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 number of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the video 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 the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 4890 1GB

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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