GeForce GTX 780 Ti vs GeForce GTX 870M

Intro

Compare those specifications to the GeForce GTX 870M, which features clock speeds of 941 MHz on the GPU, and 1000 MHz on the 3072 MB of GDDR5 memory. It features 1344 SPUs as well as 112 Texture Address Units and 24 Rasterization Operator Units.

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 780 Ti		10900 points
GeForce GTX 870M		4770 points
	Difference: 6130 (129%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 870M		110 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 140 Watts (127%)

Memory Bandwidth

The GeForce GTX 780 Ti should theoretically be a lot faster than the GeForce GTX 870M in general. (explain)

GeForce GTX 780 Ti		336000 MB/sec
GeForce GTX 870M		96000 MB/sec
	Difference: 240000 (250%)

Texel Rate

The GeForce GTX 780 Ti will be much (about 99%) faster with regards to anisotropic filtering than the GeForce GTX 870M. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
GeForce GTX 870M		105392 Mtexels/sec
	Difference: 104608 (99%)

Pixel Rate

The GeForce GTX 780 Ti will be much (more or less 86%) more effective at anti-aliasing than the GeForce GTX 870M, and able to handle higher resolutions better. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
GeForce GTX 870M		22584 Mpixels/sec
	Difference: 19416 (86%)

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 (in units of megabytes per second) that can be transported over the external memory interface in a second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed 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 per 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. The figure is calculated by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.