Radeon R9 290 vs Radeon R9 M295X

Intro

Compare those specs to the Radeon R9 M295X, which features core clock speeds of 750 MHz on the GPU, and 1375 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs along with 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M295X		125 Watts
Radeon R9 290		300 Watts
	Difference: 175 Watts (140%)

Memory Bandwidth

The Radeon R9 290 should in theory be a lot faster than the Radeon R9 M295X in general. (explain)

Radeon R9 290		320000 MB/sec
Radeon R9 M295X		176000 MB/sec
	Difference: 144000 (82%)

Texel Rate

The Radeon R9 290 should be much (more or less 33%) better at anisotropic filtering than the Radeon R9 M295X. (explain)

Radeon R9 290		128000 Mtexels/sec
Radeon R9 M295X		96000 Mtexels/sec
	Difference: 32000 (33%)

Pixel Rate

The Radeon R9 290 should be much (approximately 113%) more effective at anti-aliasing than the Radeon R9 M295X, and will be able to handle higher resolutions more effectively. (explain)

Radeon R9 290		51200 Mpixels/sec
Radeon R9 M295X		24000 Mpixels/sec
	Difference: 27200 (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 data (counted in MB per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number 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 filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.