GeForce GTX 285 2GB vs GeForce GTX 460

Intro

Compare those specifications to the GeForce GTX 460, which comes with GPU core speed of 675 MHz, and 768 MB of GDDR5 memory running at 900 MHz through a 192-bit bus. It also is made up of 336 Stream Processors, 56 TAUs, and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460		150 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 54 Watts (36%)

Memory Bandwidth

The GeForce GTX 285 2GB, in theory, should perform a lot faster than the GeForce GTX 460 in general. (explain)

GeForce GTX 285 2GB		158976 MB/sec
GeForce GTX 460		86400 MB/sec
	Difference: 72576 (84%)

Texel Rate

The GeForce GTX 285 2GB is a lot (about 37%) more effective at AF than the GeForce GTX 460. (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
GeForce GTX 460		37800 Mtexels/sec
	Difference: 14040 (37%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 285 2GB is a better choice, by a large margin. (explain)

GeForce GTX 285 2GB		20736 Mpixels/sec
GeForce GTX 460		16200 Mpixels/sec
	Difference: 4536 (28%)

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 information (measured in megabytes per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.