GeForce GTX 285 2GB vs GeForce GTX 660 Ti

Intro

Compare those specs to the GeForce GTX 660 Ti, which features clock speeds of 915 MHz on the GPU, and 1500 MHz on the 2048 MB of GDDR5 memory. It features 1344 SPUs as well as 112 TAUs and 24 ROPs.

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

Performance-wise, the GeForce GTX 285 2GB should theoretically be just a bit superior to the GeForce GTX 660 Ti in general. (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 (about 98%) more effective at AF 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 bit (more or less 6%) faster with regards to full screen anti-aliasing than the GeForce GTX 285 2GB, and should be able to handle higher resolutions without losing too much performance. (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: Bandwidth is the largest amount of data (measured in megabytes per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.