Radeon R9 M295X vs Radeon RX 480

Intro

Compare that to the Radeon RX 480, which comes with GPU core speed of 1120 MHz, and 8192 MB of GDDR5 memory set to run at 2000 MHz through a 256-bit bus. It also features 2304 SPUs, 144 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M295X		125 Watts
Radeon RX 480		150 Watts
	Difference: 25 Watts (20%)

Memory Bandwidth

In theory, the Radeon RX 480 should be 49% faster than the Radeon R9 M295X overall, due to its higher bandwidth. (explain)

Radeon RX 480		262144 MB/sec
Radeon R9 M295X		176000 MB/sec
	Difference: 86144 (49%)

Texel Rate

The Radeon RX 480 should be a lot (more or less 68%) better at anisotropic filtering than the Radeon R9 M295X. (explain)

Radeon RX 480		161280 Mtexels/sec
Radeon R9 M295X		96000 Mtexels/sec
	Difference: 65280 (68%)

Pixel Rate

The Radeon RX 480 should be quite a bit (approximately 49%) faster with regards to full screen anti-aliasing than the Radeon R9 M295X, and capable of handling higher resolutions without losing too much performance. (explain)

Radeon RX 480		35840 Mpixels/sec
Radeon R9 M295X		24000 Mpixels/sec
	Difference: 11840 (49%)

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 maximum amount of information (measured in megabytes per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, 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 most pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.