GeForce GTX 285 2GB vs GeForce GTX 660 Ti

Intro

Compare all that to the GeForce GTX 660 Ti, which features a core clock speed of 915 MHz and a GDDR5 memory frequency of 1500 MHz. It also features a 192-bit bus, and makes use of a 28 nm design. It is comprised of 1344 SPUs, 112 TAUs, and 24 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti		150 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 54 Watts (36%)

Memory Bandwidth

The GeForce GTX 285 2GB should in theory perform a bit faster than the GeForce GTX 660 Ti overall. (explain)

GeForce GTX 285 2GB		158976 MB/sec
GeForce GTX 660 Ti		144000 MB/sec
	Difference: 14976 (10%)

Texel Rate

The GeForce GTX 660 Ti should be a lot (approximately 98%) faster with regards to anisotropic filtering than the GeForce GTX 285 2GB. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
GeForce GTX 285 2GB		51840 Mtexels/sec
	Difference: 50640 (98%)

Pixel Rate

The GeForce GTX 660 Ti should be a little bit (more or less 6%) more effective at FSAA than the GeForce GTX 285 2GB, and also able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
GeForce GTX 285 2GB		20736 Mpixels/sec
	Difference: 1224 (6%)

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 maximum amount of data (measured in megabytes per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in a 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 clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.