Radeon R9 270X vs Radeon R9 M375X

Intro

Compare those specifications to the Radeon R9 M375X, which comes with a clock frequency of 1015 MHz and a GDDR5 memory speed of 1125 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It features 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 270X will be 149% faster than the Radeon R9 M375X in general, due to its greater bandwidth. (explain)

Radeon R9 270X		179200 MB/sec
Radeon R9 M375X		72000 MB/sec
	Difference: 107200 (149%)

Texel Rate

The Radeon R9 270X will be quite a bit (more or less 97%) more effective at anisotropic filtering than the Radeon R9 M375X. (explain)

Radeon R9 270X		80000 Mtexels/sec
Radeon R9 M375X		40600 Mtexels/sec
	Difference: 39400 (97%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 270X is the winner, and very much so. (explain)

Radeon R9 270X		32000 Mpixels/sec
Radeon R9 M375X		16240 Mpixels/sec
	Difference: 15760 (97%)

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 max amount of data (in units of megabytes per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total number of texture units of the card 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 processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number 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 outputting the pixels (image) to the screen. The actual pixel output 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 get to the maximum fill rate.