Radeon R9 290X vs Radeon R9 M295X

Intro

Compare those specifications to the Radeon R9 M295X, which features clock speeds of 750 MHz on the GPU, and 1375 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs as well as 128 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

The Radeon R9 290X should in theory perform quite a bit faster than the Radeon R9 M295X in general. (explain)

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

Texel Rate

The Radeon R9 290X will be a lot (more or less 47%) more effective at texture filtering than the Radeon R9 M295X. (explain)

Radeon R9 290X		140800 Mtexels/sec
Radeon R9 M295X		96000 Mtexels/sec
	Difference: 44800 (47%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 290X is superior to the Radeon R9 M295X, by a large margin. (explain)

Radeon R9 290X		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 information (in units of megabytes per second) that can be transferred past the external memory interface in a second. The number is calculated by multiplying the bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's 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 can be applied in one second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of 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.