Radeon HD 5750 512MB vs Radeon R5 M255

Intro

Compare those specifications to the Radeon R5 M255, which has a clock speed of 940 MHz and a DDR3 memory frequency of 1000 MHz. It also features a 64-bit bus, and uses a 28 nm design. It is comprised of 320 SPUs, 20 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 5750 512MB should in theory be a lot better than the Radeon R5 M255 in general. (explain)

Radeon HD 5750 512MB		73600 MB/sec
Radeon R5 M255		16000 MB/sec
	Difference: 57600 (360%)

Texel Rate

The Radeon HD 5750 512MB is a lot (about 34%) better at texture filtering than the Radeon R5 M255. (explain)

Radeon HD 5750 512MB		25200 Mtexels/sec
Radeon R5 M255		18800 Mtexels/sec
	Difference: 6400 (34%)

Pixel Rate

The Radeon HD 5750 512MB is quite a bit (about 49%) better at FSAA than the Radeon R5 M255, and should be able to handle higher screen resolutions while still performing well. (explain)

Radeon HD 5750 512MB		11200 Mpixels/sec
Radeon R5 M255		7520 Mpixels/sec
	Difference: 3680 (49%)

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

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of data (counted in MB per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. 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 potential to reach the max fill rate.