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Radeon HD 4850 X2 512MB vs Radeon RX 550

Intro

The Radeon HD 4850 X2 512MB features a GPU core speed of 625 MHz, and the 512 MB of GDDR3 memory is set to run at 993 MHz through a 256-bit bus. It also features 800(160x5) Stream Processors, 40 Texture Address Units, and 16 ROPs.

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

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550 50 Watts
Radeon HD 4850 X2 512MB 250 Watts
Difference: 200 Watts (400%)

Memory Bandwidth

Performance-wise, the Radeon HD 4850 X2 512MB should in theory be a small bit superior to the Radeon RX 550 overall. (explain)

Radeon HD 4850 X2 512MB 127104 MB/sec
Radeon RX 550 114688 MB/sec
Difference: 12416 (11%)

Texel Rate

The Radeon HD 4850 X2 512MB is quite a bit (about 42%) faster with regards to AF than the Radeon RX 550. (explain)

Radeon HD 4850 X2 512MB 50000 Mtexels/sec
Radeon RX 550 35200 Mtexels/sec
Difference: 14800 (42%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 4850 X2 512MB is the winner, but not by far. (explain)

Radeon HD 4850 X2 512MB 20000 Mpixels/sec
Radeon RX 550 17600 Mpixels/sec
Difference: 2400 (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 4850 X2 512MB

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 4850 X2 512MB Radeon RX 550
Manufacturer AMD AMD
Year Nov 7, 2008 April 2017
Code Name R700 Polaris 12
Memory 512 MB (x2) 2048 MB
Core Speed 625 MHz (x2) 1100 MHz
Memory Speed 1986 MHz (x2) 7000 MHz
Power (Max TDP) 250 watts 50 watts
Bandwidth 127104 MB/sec 114688 MB/sec
Texel Rate 50000 Mtexels/sec 35200 Mtexels/sec
Pixel Rate 20000 Mpixels/sec 17600 Mpixels/sec
Unified Shaders 800(160x5) (x2) 512
Texture Mapping Units 40 (x2) 32
Render Output Units 16 (x2) 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit (x2) 128-bit
Fab Process 55 nm 14 nm
Transistors 956 million 2200 million
Bus PCIe 2.0 x16 (PCIe bridge) 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 data (measured in megabytes per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher the texel rate, the better the 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 maximum number of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially 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 4850 X2 512MB

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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