GeForce GTX 460 2GB vs GeForce GTX 660 Ti

Intro

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

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti		150 Watts
GeForce GTX 460 2GB		160 Watts
	Difference: 10 Watts (7%)

Memory Bandwidth

In theory, the GeForce GTX 660 Ti should be 25% quicker than the GeForce GTX 460 2GB overall, because of its higher bandwidth. (explain)

GeForce GTX 660 Ti		144000 MB/sec
GeForce GTX 460 2GB		115200 MB/sec
	Difference: 28800 (25%)

Texel Rate

The GeForce GTX 660 Ti is much (approximately 171%) better at texture filtering than the GeForce GTX 460 2GB. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
GeForce GTX 460 2GB		37800 Mtexels/sec
	Difference: 64680 (171%)

Pixel Rate

The GeForce GTX 660 Ti will be a little bit (more or less 2%) faster with regards to anti-aliasing than the GeForce GTX 460 2GB, and should be capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
GeForce GTX 460 2GB		21600 Mpixels/sec
	Difference: 360 (2%)

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 information (in units of MB per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher 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 amount of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of 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 Render Output Units by the the core speed of the card. 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 is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.