GeForce GTX 780 Ti vs GeForce GTX 970M

Intro

Compare that to the GeForce GTX 970M, which makes use of a 28 nm design. nVidia has clocked the core frequency at 924 MHz. The GDDR5 memory works at a speed of 1000 MHz on this model. It features 1280 SPUs as well as 80 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 Ti		10900 points
GeForce GTX 970M		7520 points
	Difference: 3380 (45%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970M		75 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 175 Watts (233%)

Memory Bandwidth

Performance-wise, the GeForce GTX 780 Ti should in theory be a lot superior to the GeForce GTX 970M overall. (explain)

GeForce GTX 780 Ti		336000 MB/sec
GeForce GTX 970M		96000 MB/sec
	Difference: 240000 (250%)

Texel Rate

The GeForce GTX 780 Ti should be a lot (about 184%) better at texture filtering than the GeForce GTX 970M. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
GeForce GTX 970M		73920 Mtexels/sec
	Difference: 136080 (184%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 970M is the winner, though only just barely. (explain)

GeForce GTX 970M		44352 Mpixels/sec
GeForce GTX 780 Ti		42000 Mpixels/sec
	Difference: 2352 (6%)

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 (measured in megabytes per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster 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 are applied in one second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the graphics 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 chip could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called 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 get to the max fill rate.