GeForce GTX 860M vs GeForce GTX 880M

Intro

Compare those specs to the GeForce GTX 880M, which makes use of a 28 nm design. nVidia has clocked the core speed at 954 MHz. The GDDR5 RAM is set to run at a frequency of 1000 MHz on this model. It features 1536 SPUs as well as 128 Texture Address Units 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 860M		4340 points
	Difference: 2020 (47%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
GeForce GTX 880M		130 Watts
	Difference: 85 Watts (189%)

Memory Bandwidth

Performance-wise, the GeForce GTX 880M should in theory be a lot superior to the GeForce GTX 860M in general. (explain)

GeForce GTX 880M		128000 MB/sec
GeForce GTX 860M		64000 MB/sec
	Difference: 64000 (100%)

Texel Rate

The GeForce GTX 880M will be quite a bit (more or less 60%) better at texture filtering than the GeForce GTX 860M. (explain)

GeForce GTX 880M		122112 Mtexels/sec
GeForce GTX 860M		76512 Mtexels/sec
	Difference: 45600 (60%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 880M is the winner, by a large margin. (explain)

GeForce GTX 880M		30528 Mpixels/sec
GeForce GTX 860M		12752 Mpixels/sec
	Difference: 17776 (139%)

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 information (counted in MB per second) that can be transferred over the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.