GeForce GTX 580 vs GeForce GTX 880M

Intro

Compare all that to the GeForce GTX 880M, which uses a 28 nm design. nVidia has clocked the core speed at 954 MHz. The GDDR5 RAM is set to run at a speed of 1000 MHz on this model. It features 1536 SPUs along with 128 TAUs and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 880M		6360 points
GeForce GTX 580		4956 points
	Difference: 1404 (28%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M		130 Watts
GeForce GTX 580		244 Watts
	Difference: 114 Watts (88%)

Memory Bandwidth

Theoretically, the GeForce GTX 580 should be quite a bit faster than the GeForce GTX 880M in general. (explain)

GeForce GTX 580		192384 MB/sec
GeForce GTX 880M		128000 MB/sec
	Difference: 64384 (50%)

Texel Rate

The GeForce GTX 880M will be a lot (about 147%) faster with regards to texture filtering than the GeForce GTX 580. (explain)

GeForce GTX 880M		122112 Mtexels/sec
GeForce GTX 580		49408 Mtexels/sec
	Difference: 72704 (147%)

Pixel Rate

The GeForce GTX 580 should be much (about 21%) more effective at full screen anti-aliasing than the GeForce GTX 880M, and able to handle higher resolutions while still performing well. (explain)

GeForce GTX 580		37056 Mpixels/sec
GeForce GTX 880M		30528 Mpixels/sec
	Difference: 6528 (21%)

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 (in units of MB per second) that can be transported across the external memory interface in a second. The number is worked out by multiplying the card's 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 4 instead. The higher the bandwidth is, 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 texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.