Radeon R5 M255 vs Radeon R7 370 2G

Intro

Compare those specs to the Radeon R7 370 2G, which has a clock speed of 975 MHz and a GDDR5 memory frequency of 1400 MHz. It also makes use of a 256-bit bus, and makes use of a 28 nm design. It is comprised of 1024 SPUs, 64 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon R7 370 2G should in theory be quite a bit better than the Radeon R5 M255 in general. (explain)

Radeon R7 370 2G		179200 MB/sec
Radeon R5 M255		16000 MB/sec
	Difference: 163200 (1020%)

Texel Rate

The Radeon R7 370 2G is much (more or less 232%) more effective at texture filtering than the Radeon R5 M255. (explain)

Radeon R7 370 2G		62400 Mtexels/sec
Radeon R5 M255		18800 Mtexels/sec
	Difference: 43600 (232%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R7 370 2G is superior to the Radeon R5 M255, by far. (explain)

Radeon R7 370 2G		31200 Mpixels/sec
Radeon R5 M255		7520 Mpixels/sec
	Difference: 23680 (315%)

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 largest amount of data (in units of megabytes per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the interface width by the speed of its memory. In the case of DDR type memory, 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 high 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 of the card 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 maximum amount of pixels that the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units 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 lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.