GeForce GTX 970 vs Geforce GTX 780

Intro

Compare those specs to the Geforce GTX 780, which uses a 28 nm design. nVidia has set the core frequency at 863 MHz. The GDDR5 RAM is set to run at a frequency of 1502 MHz on this particular card. It features 2304 SPUs as well as 192 Texture Address Units 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 970		10867 points
Geforce GTX 780		10082 points
	Difference: 785 (8%)

Ethereum Mining Hash Rate

Geforce GTX 780		20 Mh/s
GeForce GTX 970		19 Mh/s
	Difference: 1 (5%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970		145 Watts
Geforce GTX 780		250 Watts
	Difference: 105 Watts (72%)

Memory Bandwidth

Performance-wise, the Geforce GTX 780 should in theory be much better than the GeForce GTX 970 overall. (explain)

Geforce GTX 780		288384 MB/sec
GeForce GTX 970		224000 MB/sec
	Difference: 64384 (29%)

Texel Rate

The Geforce GTX 780 should be quite a bit (more or less 52%) better at AF than the GeForce GTX 970. (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce GTX 970		109200 Mtexels/sec
	Difference: 56496 (52%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 970 is the winner, and very much so. (explain)

GeForce GTX 970		67200 Mpixels/sec
Geforce GTX 780		41424 Mpixels/sec
	Difference: 25776 (62%)

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 (measured in MB per second) that can be transferred over the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. 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 amount of texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied 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 colour ROPs by the clock speed of the card. 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 ability to get to the maximum fill rate.