GeForce GTX 260 vs GeForce GTX 880M

Intro

Compare those specs to the GeForce GTX 880M, which has core speeds of 954 MHz on the GPU, and 1000 MHz on the 4096 MB of GDDR5 memory. It features 1536 SPUs along with 128 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M		130 Watts
GeForce GTX 260		182 Watts
	Difference: 52 Watts (40%)

Memory Bandwidth

In theory, the GeForce GTX 880M is 14% faster than the GeForce GTX 260 in general, because of its greater bandwidth. (explain)

GeForce GTX 880M		128000 MB/sec
GeForce GTX 260		111888 MB/sec
	Difference: 16112 (14%)

Texel Rate

The GeForce GTX 880M should be much (approximately 231%) more effective at texture filtering than the GeForce GTX 260. (explain)

GeForce GTX 880M		122112 Mtexels/sec
GeForce GTX 260		36864 Mtexels/sec
	Difference: 85248 (231%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 880M is the winner, and very much so. (explain)

GeForce GTX 880M		30528 Mpixels/sec
GeForce GTX 260		16128 Mpixels/sec
	Difference: 14400 (89%)

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 largest amount of information (counted in megabytes per second) that can be transported past the external memory interface in a second. It is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher 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 can be applied in one second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

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