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Radeon HD 4890 2GB vs Radeon RX 550

Intro

The Radeon HD 4890 2GB comes with a GPU core speed of 1000 MHz, and the 2048 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 those specifications to the Radeon RX 550, which has a core clock speed of 1100 MHz and a GDDR5 memory speed of 1750 MHz. It also features a 128-bit memory bus, and makes use of a 14 nm design. It features 512 SPUs, 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 2GB 190 Watts
Difference: 140 Watts (280%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4890 2GB should perform a small bit faster than the Radeon RX 550 in general. (explain)

Radeon HD 4890 2GB 124800 MB/sec
Radeon RX 550 114688 MB/sec
Difference: 10112 (9%)

Texel Rate

The Radeon HD 4890 2GB is a little bit (more or less 14%) faster with regards to anisotropic filtering than the Radeon RX 550. (explain)

Radeon HD 4890 2GB 40000 Mtexels/sec
Radeon RX 550 35200 Mtexels/sec
Difference: 4800 (14%)

Pixel Rate

The Radeon RX 550 will be a little bit (more or less 10%) faster with regards to AA than the Radeon HD 4890 2GB, and also should be capable of handling higher resolutions without slowing down too much. (explain)

Radeon RX 550 17600 Mpixels/sec
Radeon HD 4890 2GB 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 2GB

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 2GB Radeon RX 550
Manufacturer AMD AMD
Year Apr 2, 2009 April 2017
Code Name RV790 XT Polaris 12
Memory 2048 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: Bandwidth is the maximum amount of data (in units of MB per second) that can be transported past the external memory interface within a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 4890 2GB

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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