Radeon R7 250X vs Radeon R9 M295X

Intro

Compare those specs to the Radeon R9 M295X, which comes with a GPU core clock speed of 750 MHz, and 4096 MB of GDDR5 RAM set to run at 1375 MHz through a 256-bit bus. It also is comprised of 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X		95 Watts
Radeon R9 M295X		125 Watts
	Difference: 30 Watts (32%)

Memory Bandwidth

The Radeon R9 M295X should theoretically perform a lot faster than the Radeon R7 250X overall. (explain)

Radeon R9 M295X		176000 MB/sec
Radeon R7 250X		72000 MB/sec
	Difference: 104000 (144%)

Texel Rate

The Radeon R9 M295X should be much (more or less 140%) better at texture filtering than the Radeon R7 250X. (explain)

Radeon R9 M295X		96000 Mtexels/sec
Radeon R7 250X		40000 Mtexels/sec
	Difference: 56000 (140%)

Pixel Rate

The Radeon R9 M295X is a lot (more or less 50%) more effective at anti-aliasing than the Radeon R7 250X, and should be able to handle higher resolutions while still performing well. (explain)

Radeon R9 M295X		24000 Mpixels/sec
Radeon R7 250X		16000 Mpixels/sec
	Difference: 8000 (50%)

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: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transferred across the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount 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 Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.