GeForce GTX 660 Ti vs GeForce GTX 980 Ti

Intro

Compare that to the GeForce GTX 980 Ti, which has core clock speeds of 1000 MHz on the GPU, and 1750 MHz on the 6144 MB of GDDR5 memory. It features 2816 SPUs along with 176 TAUs and 96 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 980 Ti		17120 points
GeForce GTX 660 Ti		6013 points
	Difference: 11107 (185%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti		150 Watts
GeForce GTX 980 Ti		250 Watts
	Difference: 100 Watts (67%)

Memory Bandwidth

The GeForce GTX 980 Ti should theoretically perform much faster than the GeForce GTX 660 Ti overall. (explain)

GeForce GTX 980 Ti		336000 MB/sec
GeForce GTX 660 Ti		144000 MB/sec
	Difference: 192000 (133%)

Texel Rate

The GeForce GTX 980 Ti should be quite a bit (approximately 72%) better at AF than the GeForce GTX 660 Ti. (explain)

GeForce GTX 980 Ti		176000 Mtexels/sec
GeForce GTX 660 Ti		102480 Mtexels/sec
	Difference: 73520 (72%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 980 Ti is superior to the GeForce GTX 660 Ti, by a large margin. (explain)

GeForce GTX 980 Ti		96000 Mpixels/sec
GeForce GTX 660 Ti		21960 Mpixels/sec
	Difference: 74040 (337%)

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 data (counted in MB per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the interface width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 number of texture map elements (texels) that are processed per second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock speed of the card. 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 also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.