GeForce GTX 660 Ti vs GeForce GTX 980M

Intro

Compare those specs to the GeForce GTX 980M, which makes use of a 28 nm design. nVidia has set the core speed at 1038 MHz. The GDDR5 memory runs at a speed of 1000 MHz on this particular model. It features 1536 SPUs as well as 96 TAUs and 64 ROPs.

Display Graphs

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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 980M		9476 points
GeForce GTX 660 Ti		6013 points
	Difference: 3463 (58%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980M		100 Watts
GeForce GTX 660 Ti		150 Watts
	Difference: 50 Watts (50%)

Memory Bandwidth

The GeForce GTX 660 Ti, in theory, should be a bit faster than the GeForce GTX 980M overall. (explain)

GeForce GTX 660 Ti		144000 MB/sec
GeForce GTX 980M		128000 MB/sec
	Difference: 16000 (13%)

Texel Rate

The GeForce GTX 660 Ti should be a small bit (about 3%) more effective at anisotropic filtering than the GeForce GTX 980M. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
GeForce GTX 980M		99648 Mtexels/sec
	Difference: 2832 (3%)

Pixel Rate

The GeForce GTX 980M is quite a bit (approximately 203%) more effective at full screen anti-aliasing than the GeForce GTX 660 Ti, and able to handle higher resolutions while still performing well. (explain)

GeForce GTX 980M		66432 Mpixels/sec
GeForce GTX 660 Ti		21960 Mpixels/sec
	Difference: 44472 (203%)

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 max amount of data (measured in MB per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.