Radeon R9 295X2 vs Radeon R9 M295X

Intro

Compare that to the Radeon R9 M295X, which makes use of a 28 nm design. AMD has set the core speed at 750 MHz. The GDDR5 memory works at a frequency of 1375 MHz on this particular card. It features 2048 SPUs as well as 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 295X2		500 Watts
	Difference: 375 Watts (300%)

Memory Bandwidth

In theory, the Radeon R9 295X2 is 264% quicker than the Radeon R9 M295X overall, due to its greater bandwidth. (explain)

Radeon R9 295X2		640000 MB/sec
Radeon R9 M295X		176000 MB/sec
	Difference: 464000 (264%)

Texel Rate

The Radeon R9 295X2 is much (more or less 273%) better at anisotropic filtering than the Radeon R9 M295X. (explain)

Radeon R9 295X2		358336 Mtexels/sec
Radeon R9 M295X		96000 Mtexels/sec
	Difference: 262336 (273%)

Pixel Rate

The Radeon R9 295X2 will be quite a bit (about 443%) more effective at AA than the Radeon R9 M295X, and also should be able to handle higher resolutions while still performing well. (explain)

Radeon R9 295X2		130304 Mpixels/sec
Radeon R9 M295X		24000 Mpixels/sec
	Difference: 106304 (443%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 per second. This figure 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the clock 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 rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.