GeForce GTX 285 2GB vs GeForce GTX 650 Ti 2GB

Intro

Compare those specs to the GeForce GTX 650 Ti 2GB, which features GPU clock speed of 928 MHz, and 2048 MB of GDDR5 RAM running at 1350 MHz through a 128-bit bus. It also is comprised of 768 Stream Processors, 64 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 2GB		110 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 94 Watts (85%)

Memory Bandwidth

In theory, the GeForce GTX 285 2GB should be a lot faster than the GeForce GTX 650 Ti 2GB overall. (explain)

GeForce GTX 285 2GB		158976 MB/sec
GeForce GTX 650 Ti 2GB		86400 MB/sec
	Difference: 72576 (84%)

Texel Rate

The GeForce GTX 650 Ti 2GB should be a little bit (about 15%) faster with regards to texture filtering than the GeForce GTX 285 2GB. (explain)

GeForce GTX 650 Ti 2GB		59392 Mtexels/sec
GeForce GTX 285 2GB		51840 Mtexels/sec
	Difference: 7552 (15%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 285 2GB is superior to the GeForce GTX 650 Ti 2GB, and very much so. (explain)

GeForce GTX 285 2GB		20736 Mpixels/sec
GeForce GTX 650 Ti 2GB		14848 Mpixels/sec
	Difference: 5888 (40%)

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 (counted in MB per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the interface width by its memory speed. If the card has DDR type RAM, the result 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 anti-aliasing, HDR and higher screen 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 number of texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the card's clock speed. 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 quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.