GeForce GTX 880M vs Radeon RX 480 4GB

Intro

Compare all of that to the Radeon RX 480 4GB, which comes with a clock speed of 1120 MHz and a GDDR5 memory frequency of 1750 MHz. It also features a 256-bit memory bus, and makes use of a 14 nm design. It features 2304 SPUs, 144 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M		130 Watts
Radeon RX 480 4GB		150 Watts
	Difference: 20 Watts (15%)

Memory Bandwidth

In theory, the Radeon RX 480 4GB will be 79% faster than the GeForce GTX 880M in general, due to its higher data rate. (explain)

Radeon RX 480 4GB		229376 MB/sec
GeForce GTX 880M		128000 MB/sec
	Difference: 101376 (79%)

Texel Rate

The Radeon RX 480 4GB should be much (about 32%) better at anisotropic filtering than the GeForce GTX 880M. (explain)

Radeon RX 480 4GB		161280 Mtexels/sec
GeForce GTX 880M		122112 Mtexels/sec
	Difference: 39168 (32%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon RX 480 4GB is superior to the GeForce GTX 880M, not by a very large margin though. (explain)

Radeon RX 480 4GB		35840 Mpixels/sec
GeForce GTX 880M		30528 Mpixels/sec
	Difference: 5312 (17%)

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 max amount of data (measured in MB per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes 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 bandwidth is, the lower the ability to get to the maximum fill rate.