GeForce GTX 660 Ti vs GeForce GTX 880M

Intro

Compare that to the GeForce GTX 880M, which uses a 28 nm design. nVidia has set the core frequency at 954 MHz. The GDDR5 RAM runs at a frequency of 1000 MHz on this specific card. It features 1536 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

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 660 Ti		6013 points
	Difference: 347 (6%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M		130 Watts
GeForce GTX 660 Ti		150 Watts
	Difference: 20 Watts (15%)

Memory Bandwidth

In theory, the GeForce GTX 660 Ti will be 13% faster than the GeForce GTX 880M overall, because of its higher bandwidth. (explain)

GeForce GTX 660 Ti		144000 MB/sec
GeForce GTX 880M		128000 MB/sec
	Difference: 16000 (13%)

Texel Rate

The GeForce GTX 880M will be a bit (about 19%) faster with regards to anisotropic filtering than the GeForce GTX 660 Ti. (explain)

GeForce GTX 880M		122112 Mtexels/sec
GeForce GTX 660 Ti		102480 Mtexels/sec
	Difference: 19632 (19%)

Pixel Rate

The GeForce GTX 880M is quite a bit (approximately 39%) more effective at AA than the GeForce GTX 660 Ti, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 880M		30528 Mpixels/sec
GeForce GTX 660 Ti		21960 Mpixels/sec
	Difference: 8568 (39%)

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 (measured in megabytes per second) that can be transferred past the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better 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 are applied in one second. This figure is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

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