Radeon R9 M290X vs Radeon R9 M370X

Intro

Compare those specifications to the Radeon R9 M370X, which features clock speeds of 800 MHz on the GPU, and 1125 MHz on the 2048 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 M290X should be 113% quicker than the Radeon R9 M370X overall, due to its greater data rate. (explain)

Radeon R9 M290X		153600 MB/sec
Radeon R9 M370X		72000 MB/sec
	Difference: 81600 (113%)

Texel Rate

The Radeon R9 M290X will be a lot (approximately 113%) better at AF than the Radeon R9 M370X. (explain)

Radeon R9 M290X		68000 Mtexels/sec
Radeon R9 M370X		32000 Mtexels/sec
	Difference: 36000 (113%)

Pixel Rate

The Radeon R9 M290X should be much (approximately 113%) better at FSAA than the Radeon R9 M370X, and also will be able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 M290X		27200 Mpixels/sec
Radeon R9 M370X		12800 Mpixels/sec
	Difference: 14400 (113%)

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 max amount of information (measured in megabytes per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 again. If it uses 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 amount of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.