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Radeon HD 4850 X2 1GB vs Radeon RX 550

Intro

The Radeon HD 4850 X2 1GB has a GPU core speed of 625 MHz, and the 1024 MB of GDDR3 memory is set to run at 993 MHz through a 256-bit bus. It also is comprised of 800(160x5) Stream Processors, 40 TAUs, and 16 Raster Operation Units.

Compare all that to the Radeon RX 550, which comes with GPU clock speed of 1100 MHz, and 2048 MB of GDDR5 memory running at 1750 MHz through a 128-bit bus. It also features 512 SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550 50 Watts
Radeon HD 4850 X2 1GB 250 Watts
Difference: 200 Watts (400%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4850 X2 1GB should be 11% quicker than the Radeon RX 550 overall, due to its greater bandwidth. (explain)

Radeon HD 4850 X2 1GB 127104 MB/sec
Radeon RX 550 114688 MB/sec
Difference: 12416 (11%)

Texel Rate

The Radeon HD 4850 X2 1GB is quite a bit (approximately 42%) faster with regards to AF than the Radeon RX 550. (explain)

Radeon HD 4850 X2 1GB 50000 Mtexels/sec
Radeon RX 550 35200 Mtexels/sec
Difference: 14800 (42%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 4850 X2 1GB is a better choice, but not by far. (explain)

Radeon HD 4850 X2 1GB 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 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 4850 X2 1GB Radeon RX 550
Manufacturer AMD AMD
Year Nov 7, 2008 April 2017
Code Name R700 Polaris 12
Memory 1024 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 largest amount of data (measured in MB per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, the result should 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 anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its 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 clock speed of the card. 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 output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

Radeon HD 4850 X2 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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