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Radeon HD 4850 512MB vs Radeon RX 550

Intro

The Radeon HD 4850 512MB comes with a GPU core clock speed of 625 MHz, and the 512 MB of GDDR3 RAM 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 Raster Operation Units.

Compare all that to the Radeon RX 550, which has a GPU core clock speed of 1100 MHz, and 2048 MB of GDDR5 memory set to run at 1750 MHz through a 128-bit bus. It also is made up of 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 512MB 110 Watts
Difference: 60 Watts (120%)

Memory Bandwidth

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

Radeon RX 550 114688 MB/sec
Radeon HD 4850 512MB 63552 MB/sec
Difference: 51136 (80%)

Texel Rate

The Radeon RX 550 should be a lot (more or less 41%) more effective at anisotropic filtering than the Radeon HD 4850 512MB. (explain)

Radeon RX 550 35200 Mtexels/sec
Radeon HD 4850 512MB 25000 Mtexels/sec
Difference: 10200 (41%)

Pixel Rate

The Radeon RX 550 should be much (approximately 76%) more effective at full screen anti-aliasing than the Radeon HD 4850 512MB, and will be capable of handling higher screen resolutions while still performing well. (explain)

Radeon RX 550 17600 Mpixels/sec
Radeon HD 4850 512MB 10000 Mpixels/sec
Difference: 7600 (76%)

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 4850 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 512MB Radeon RX 550
Manufacturer AMD AMD
Year Jun 25, 2008 April 2017
Code Name RV770 PRO Polaris 12
Memory 512 MB 2048 MB
Core Speed 625 MHz 1100 MHz
Memory Speed 1986 MHz 7000 MHz
Power (Max TDP) 110 watts 50 watts
Bandwidth 63552 MB/sec 114688 MB/sec
Texel Rate 25000 Mtexels/sec 35200 Mtexels/sec
Pixel Rate 10000 Mpixels/sec 17600 Mpixels/sec
Unified Shaders 800(160x5) 512
Texture Mapping Units 40 32
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 55 nm 14 nm
Transistors 956 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 maximum amount of data (measured in megabytes per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill 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 potential to reach the maximum fill rate.

Display Prices

Hide Prices

Radeon HD 4850 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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