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Radeon HD 4550 512MB vs Radeon R5 M255

Intro

The Radeon HD 4550 512MB comes with clock speeds of 600 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 RAM. It features 80(16x5) SPUs as well as 8 Texture Address Units and 4 ROPs.

Compare those specifications to the Radeon R5 M255, which comes with GPU core speed of 940 MHz, and 2048 MB of DDR3 memory set to run at 1000 MHz through a 64-bit bus. It also is made up of 320 Stream Processors, 20 TAUs, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R5 M255 will be 25% quicker than the Radeon HD 4550 512MB in general, due to its greater bandwidth. (explain)

Radeon R5 M255 16000 MB/sec
Radeon HD 4550 512MB 12800 MB/sec
Difference: 3200 (25%)

Texel Rate

The Radeon R5 M255 should be a lot (about 292%) more effective at AF than the Radeon HD 4550 512MB. (explain)

Radeon R5 M255 18800 Mtexels/sec
Radeon HD 4550 512MB 4800 Mtexels/sec
Difference: 14000 (292%)

Pixel Rate

The Radeon R5 M255 should be a lot (about 213%) better at full screen anti-aliasing than the Radeon HD 4550 512MB, and should be capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon R5 M255 7520 Mpixels/sec
Radeon HD 4550 512MB 2400 Mpixels/sec
Difference: 5120 (213%)

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 4550 512MB

Amazon.com

Check prices at:

Radeon R5 M255

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 4550 512MB Radeon R5 M255
Manufacturer AMD AMD
Year Sep 30, 2008 June 2014
Code Name RV710 Jet Pro
Memory 512 MB 2048 MB
Core Speed 600 MHz 940 MHz
Memory Speed 1600 MHz 2000 MHz
Power (Max TDP) 25 watts (Unknown) watts
Bandwidth 12800 MB/sec 16000 MB/sec
Texel Rate 4800 Mtexels/sec 18800 Mtexels/sec
Pixel Rate 2400 Mpixels/sec 7520 Mpixels/sec
Unified Shaders 80(16x5) 320
Texture Mapping Units 8 20
Render Output Units 4 8
Bus Type GDDR3 DDR3
Bus Width 64-bit 64-bit
Fab Process 55 nm 28 nm
Transistors 242 million (Unknown) million
Bus PCIe 2.0 x16 PCIe 3.0 x8
DirectX Version DirectX 10.1 DirectX 11.2
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the max amount of data (measured in MB per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out 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 filling the screen with pixels (the image). The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

Radeon HD 4550 512MB

Amazon.com

Check prices at:

Radeon R5 M255

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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