Radeon R9 290X vs Radeon R9 M375X

Intro

Compare all of that to the Radeon R9 M375X, which comes with core clock speeds of 1015 MHz on the GPU, and 1125 MHz on the 4096 MB of GDDR5 RAM. It features 640 SPUs as well as 40 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon R9 290X should perform a lot faster than the Radeon R9 M375X overall. (explain)

Radeon R9 290X		320000 MB/sec
Radeon R9 M375X		72000 MB/sec
	Difference: 248000 (344%)

Texel Rate

The Radeon R9 290X will be quite a bit (more or less 247%) better at anisotropic filtering than the Radeon R9 M375X. (explain)

Radeon R9 290X		140800 Mtexels/sec
Radeon R9 M375X		40600 Mtexels/sec
	Difference: 100200 (247%)

Pixel Rate

The Radeon R9 290X should be quite a bit (approximately 215%) more effective at FSAA than the Radeon R9 M375X, and also should be capable of handling higher resolutions without slowing down too much. (explain)

Radeon R9 290X		51200 Mpixels/sec
Radeon R9 M375X		16240 Mpixels/sec
	Difference: 34960 (215%)

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 maximum amount of information (in units of MB per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the bus width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This is calculated by multiplying the total amount of 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 a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called 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, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.