Radeon R9 295X2 vs Radeon R9 M295X

Intro

Compare all that to the Radeon R9 M295X, which features GPU core speed of 750 MHz, and 4096 MB of GDDR5 memory set to run at 1375 MHz through a 256-bit bus. It also is comprised of 2048 Stream Processors, 128 TAUs, and 32 Raster Operation 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

The Radeon R9 295X2, in theory, should perform a lot faster than the Radeon R9 M295X in general. (explain)

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

Texel Rate

The Radeon R9 295X2 should be a lot (about 273%) better at texture 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 (approximately 443%) more effective at AA than the Radeon R9 M295X, and will be able to handle higher screen resolutions without losing too much performance. (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 max amount of data (counted in megabytes per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 are processed in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the card's 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 also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.