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Radeon HD 4890 1GB vs Radeon RX 550

Intro

The Radeon HD 4890 1GB comes with a clock speed of 1000 MHz and a GDDR5 memory speed of 975 MHz. It also makes use of a 256-bit memory bus, and uses a 55 nm design. It is comprised of 800(160x5) SPUs, 40 TAUs, and 16 ROPs.

Compare those specifications to the Radeon RX 550, which uses a 14 nm design. AMD has clocked the core frequency at 1100 MHz. The GDDR5 memory is set to run at a frequency of 1750 MHz on this particular model. 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 theoretically 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 is a bit (about 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

The Radeon RX 550 should be a small bit (more or less 10%) faster with regards to full screen anti-aliasing than the Radeon HD 4890 1GB, and will be capable of handling higher resolutions without losing too much performance. (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 (measured in megabytes per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better 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 amount of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the card will be at handling 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 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 number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to 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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