Radeon R7 250X vs Radeon R9 M375

Intro

Compare those specifications to the Radeon R9 M375, which has a core clock speed of 1015 MHz and a DDR3 memory frequency of 1100 MHz. It also features a 128-bit bus, and makes use of a 28 nm design. It is made up of 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon R7 250X should in theory be much better than the Radeon R9 M375 overall. (explain)

Radeon R7 250X		72000 MB/sec
Radeon R9 M375		35200 MB/sec
	Difference: 36800 (105%)

Texel Rate

The Radeon R9 M375 is a bit (about 2%) faster with regards to texture filtering than the Radeon R7 250X. (explain)

Radeon R9 M375		40600 Mtexels/sec
Radeon R7 250X		40000 Mtexels/sec
	Difference: 600 (2%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon R9 M375 is a better choice, but not by far. (explain)

Radeon R9 M375		16240 Mpixels/sec
Radeon R7 250X		16000 Mpixels/sec
	Difference: 240 (2%)

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 (measured in MB per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units by the core 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 maximum amount of pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the card's 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 fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.