GeForce GTX 880M vs Radeon HD 5870

Intro

Compare that to the Radeon HD 5870, which has a core clock frequency of 850 MHz and a GDDR5 memory frequency of 1200 MHz. It also features a 256-bit bus, and makes use of a 40 nm design. It is made up of 1600(320x5) SPUs, 80 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M		130 Watts
Radeon HD 5870		188 Watts
	Difference: 58 Watts (45%)

Memory Bandwidth

In theory, the Radeon HD 5870 should be a little bit faster than the GeForce GTX 880M in general. (explain)

Radeon HD 5870		153600 MB/sec
GeForce GTX 880M		128000 MB/sec
	Difference: 25600 (20%)

Texel Rate

The GeForce GTX 880M is a lot (more or less 80%) faster with regards to anisotropic filtering than the Radeon HD 5870. (explain)

GeForce GTX 880M		122112 Mtexels/sec
Radeon HD 5870		68000 Mtexels/sec
	Difference: 54112 (80%)

Pixel Rate

The GeForce GTX 880M should be a little bit (more or less 12%) better at full screen anti-aliasing than the Radeon HD 5870, and also capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 880M		30528 Mpixels/sec
Radeon HD 5870		27200 Mpixels/sec
	Difference: 3328 (12%)

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 max amount of information (counted in megabytes per second) that can be moved past the external memory interface in a second. It is calculated by multiplying the card's 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 higher the 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 amount of texture map elements (texels) that are processed per second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling 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 card can possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.