Radeon R7 250 vs Radeon R9 M375X

Intro

Compare that to the Radeon R9 M375X, which features a GPU core clock speed of 1015 MHz, and 4096 MB of GDDR5 RAM running at 1125 MHz through a 128-bit bus. It also features 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R7 250 will be 2% faster than the Radeon R9 M375X overall, because of its greater data rate. (explain)

Radeon R7 250		73600 MB/sec
Radeon R9 M375X		72000 MB/sec
	Difference: 1600 (2%)

Texel Rate

The Radeon R9 M375X will be quite a bit (approximately 69%) faster with regards to texture filtering than the Radeon R7 250. (explain)

Radeon R9 M375X		40600 Mtexels/sec
Radeon R7 250		24000 Mtexels/sec
	Difference: 16600 (69%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 M375X is superior to the Radeon R7 250, and very much so. (explain)

Radeon R9 M375X		16240 Mpixels/sec
Radeon R7 250		8000 Mpixels/sec
	Difference: 8240 (103%)

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 largest amount of data (in units of megabytes per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the 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 texture map elements (texels) that are processed in one second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could 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 colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.