GeForce GTX 880M vs Geforce GTX 780

Intro

Compare all that to the Geforce GTX 780, which makes use of a 28 nm design. nVidia has clocked the core speed at 863 MHz. The GDDR5 memory runs at a frequency of 1502 MHz on this particular card. It features 2304 SPUs along with 192 Texture Address Units and 48 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 780		10082 points
GeForce GTX 880M		6360 points
	Difference: 3722 (59%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 880M		130 Watts
Geforce GTX 780		250 Watts
	Difference: 120 Watts (92%)

Memory Bandwidth

Theoretically, the Geforce GTX 780 should perform quite a bit faster than the GeForce GTX 880M in general. (explain)

Geforce GTX 780		288384 MB/sec
GeForce GTX 880M		128000 MB/sec
	Difference: 160384 (125%)

Texel Rate

The Geforce GTX 780 is much (more or less 36%) more effective at AF than the GeForce GTX 880M. (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce GTX 880M		122112 Mtexels/sec
	Difference: 43584 (36%)

Pixel Rate

The Geforce GTX 780 should be a lot (about 36%) more effective at anti-aliasing than the GeForce GTX 880M, and also should be able to handle higher screen resolutions while still performing well. (explain)

Geforce GTX 780		41424 Mpixels/sec
GeForce GTX 880M		30528 Mpixels/sec
	Difference: 10896 (36%)

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 (measured in megabytes per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.