GeForce GTX 970M vs Geforce GTX 780

Intro

Compare all that to the Geforce GTX 780, which has GPU core speed of 863 MHz, and 3072 MB of GDDR5 memory set to run at 1502 MHz through a 384-bit bus. It also is comprised of 2304 Stream Processors, 192 TAUs, and 48 ROPs.

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 970M		7520 points
	Difference: 2562 (34%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

The Geforce GTX 780, in theory, should perform quite a bit faster than the GeForce GTX 970M overall. (explain)

Geforce GTX 780		288384 MB/sec
GeForce GTX 970M		96000 MB/sec
	Difference: 192384 (200%)

Texel Rate

The Geforce GTX 780 is quite a bit (more or less 124%) more effective at anisotropic filtering than the GeForce GTX 970M. (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce GTX 970M		73920 Mtexels/sec
	Difference: 91776 (124%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 970M is a better choice, but not by far. (explain)

GeForce GTX 970M		44352 Mpixels/sec
Geforce GTX 780		41424 Mpixels/sec
	Difference: 2928 (7%)

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 largest amount of data (measured in MB per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 are applied per second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.