Radeon R9 M280X vs Radeon RX 480

Intro

Compare all of that to the Radeon RX 480, which uses a 14 nm design. AMD has set the core speed at 1120 MHz. The GDDR5 RAM works at a speed of 2000 MHz on this particular model. It features 2304 SPUs along with 144 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M280X		75 Watts
Radeon RX 480		150 Watts
	Difference: 75 Watts (100%)

Memory Bandwidth

In theory, the Radeon RX 480 is 198% faster than the Radeon R9 M280X overall, due to its greater bandwidth. (explain)

Radeon RX 480		262144 MB/sec
Radeon R9 M280X		88000 MB/sec
	Difference: 174144 (198%)

Texel Rate

The Radeon RX 480 is a lot (more or less 220%) better at texture filtering than the Radeon R9 M280X. (explain)

Radeon RX 480		161280 Mtexels/sec
Radeon R9 M280X		50400 Mtexels/sec
	Difference: 110880 (220%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon RX 480 is a better choice, by far. (explain)

Radeon RX 480		35840 Mpixels/sec
Radeon R9 M280X		14400 Mpixels/sec
	Difference: 21440 (149%)

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 data (measured in MB per second) that can be transferred over the external memory interface in one second. The number is worked out by multiplying the interface width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in a 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 fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.