GeForce GTX 660 Ti vs GeForce GTX 970

Intro

Compare that to the GeForce GTX 970, which makes use of a 28 nm design. nVidia has clocked the core speed at 1050 MHz. The GDDR5 memory is set to run at a frequency of 1750 MHz on this particular card. It features 1664 SPUs along with 104 Texture Address Units and 64 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 660 Ti		6013 points
	Difference: 4854 (81%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970		145 Watts
GeForce GTX 660 Ti		150 Watts
	Difference: 5 Watts (3%)

Memory Bandwidth

The GeForce GTX 970 should theoretically perform much faster than the GeForce GTX 660 Ti in general. (explain)

GeForce GTX 970		224000 MB/sec
GeForce GTX 660 Ti		144000 MB/sec
	Difference: 80000 (56%)

Texel Rate

The GeForce GTX 970 should be a little bit (more or less 7%) more effective at anisotropic filtering than the GeForce GTX 660 Ti. (explain)

GeForce GTX 970		109200 Mtexels/sec
GeForce GTX 660 Ti		102480 Mtexels/sec
	Difference: 6720 (7%)

Pixel Rate

The GeForce GTX 970 should be much (approximately 206%) better at AA than the GeForce GTX 660 Ti, and also will be able to handle higher resolutions better. (explain)

GeForce GTX 970		67200 Mpixels/sec
GeForce GTX 660 Ti		21960 Mpixels/sec
	Difference: 45240 (206%)

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 (counted in megabytes per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the interface width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, 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 can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.