GeForce GTX 650 vs GeForce GTX 660 Ti

Intro

Compare all of that to the GeForce GTX 660 Ti, which makes use of a 28 nm design. nVidia has set the core speed at 915 MHz. The GDDR5 memory is set to run at a frequency of 1500 MHz on this specific card. It features 1344 SPUs along with 112 Texture Address Units and 24 Rasterization Operator Units.

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 660 Ti		6013 points
GeForce GTX 650		2263 points
	Difference: 3750 (166%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce GTX 660 Ti		150 Watts
	Difference: 86 Watts (134%)

Memory Bandwidth

Performance-wise, the GeForce GTX 660 Ti should in theory be much superior to the GeForce GTX 650 in general. (explain)

GeForce GTX 660 Ti		144000 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 64000 (80%)

Texel Rate

The GeForce GTX 660 Ti is much (more or less 203%) more effective at AF than the GeForce GTX 650. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
GeForce GTX 650		33856 Mtexels/sec
	Difference: 68624 (203%)

Pixel Rate

The GeForce GTX 660 Ti should be much (more or less 30%) more effective at anti-aliasing than the GeForce GTX 650, and also should be able to handle higher resolutions while still performing well. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 5032 (30%)

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 information (in units of MB per second) that can be moved past the external memory interface within a second. The number is worked out by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 once 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, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core 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 is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.