Radeon HD 5750 1GB vs Radeon R5 M255

Intro

Compare all of that to the Radeon R5 M255, which uses a 28 nm design. AMD has set the core speed at 940 MHz. The DDR3 RAM runs at a frequency of 1000 MHz on this model. It features 320 SPUs along with 20 TAUs and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon HD 5750 1GB should theoretically be quite a bit better than the Radeon R5 M255 overall. (explain)

Radeon HD 5750 1GB		73600 MB/sec
Radeon R5 M255		16000 MB/sec
	Difference: 57600 (360%)

Texel Rate

The Radeon HD 5750 1GB should be much (approximately 34%) faster with regards to AF than the Radeon R5 M255. (explain)

Radeon HD 5750 1GB		25200 Mtexels/sec
Radeon R5 M255		18800 Mtexels/sec
	Difference: 6400 (34%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 5750 1GB is superior to the Radeon R5 M255, by far. (explain)

Radeon HD 5750 1GB		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: Bandwidth is the max amount of information (in units of MB per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The higher this number, the better the video 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 maximum amount of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.