GeForce GTX 780 Ti vs GeForce GTX 850M

Intro

Compare those specifications to the GeForce GTX 850M, which features a core clock frequency of 876 MHz and a DDR3 memory frequency of 1000 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation 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 Ti		10900 points
GeForce GTX 850M		3340 points
	Difference: 7560 (226%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 850M		40 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 210 Watts (525%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 780 Ti should perform a lot faster than the GeForce GTX 850M in general. (explain)

GeForce GTX 780 Ti		336000 MB/sec
GeForce GTX 850M		32000 MB/sec
	Difference: 304000 (950%)

Texel Rate

The GeForce GTX 780 Ti is a lot (approximately 499%) better at anisotropic filtering than the GeForce GTX 850M. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
GeForce GTX 850M		35040 Mtexels/sec
	Difference: 174960 (499%)

Pixel Rate

The GeForce GTX 780 Ti will be much (approximately 200%) better at FSAA than the GeForce GTX 850M, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
GeForce GTX 850M		14016 Mpixels/sec
	Difference: 27984 (200%)

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 maximum amount of data (counted in MB per second) that can be transported past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The better this number, the better the video 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 most pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.