GeForce GTX 285 1GB vs GeForce GTX 650 Ti

Intro

Compare those specs to the GeForce GTX 650 Ti, which features a core clock frequency of 928 MHz and a GDDR5 memory speed of 1350 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It features 768 SPUs, 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		110 Watts
GeForce GTX 285 1GB		204 Watts
	Difference: 94 Watts (85%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 285 1GB will be 84% faster than the GeForce GTX 650 Ti overall, because of its greater bandwidth. (explain)

GeForce GTX 285 1GB		158976 MB/sec
GeForce GTX 650 Ti		86400 MB/sec
	Difference: 72576 (84%)

Texel Rate

The GeForce GTX 650 Ti should be just a bit (about 15%) more effective at AF than the GeForce GTX 285 1GB. (explain)

GeForce GTX 650 Ti		59392 Mtexels/sec
GeForce GTX 285 1GB		51840 Mtexels/sec
	Difference: 7552 (15%)

Pixel Rate

The GeForce GTX 285 1GB will be quite a bit (about 40%) better at anti-aliasing than the GeForce GTX 650 Ti, and will be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 285 1GB		20736 Mpixels/sec
GeForce GTX 650 Ti		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 maximum amount of data (measured in MB per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 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, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total number of 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 a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. 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 also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.