GeForce GTX 285 2GB vs GeForce GTX 460 1GB

Intro

Compare those specifications to the GeForce GTX 460 1GB, which features GPU clock speed of 675 MHz, and 1024 MB of GDDR5 RAM set to run at 900 MHz through a 256-bit bus. It also is made up of 336 Stream Processors, 56 TAUs, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 460 1GB		160 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 44 Watts (28%)

Memory Bandwidth

The GeForce GTX 285 2GB should in theory perform quite a bit faster than the GeForce GTX 460 1GB overall. (explain)

GeForce GTX 285 2GB		158976 MB/sec
GeForce GTX 460 1GB		115200 MB/sec
	Difference: 43776 (38%)

Texel Rate

The GeForce GTX 285 2GB should be quite a bit (about 37%) more effective at AF than the GeForce GTX 460 1GB. (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
GeForce GTX 460 1GB		37800 Mtexels/sec
	Difference: 14040 (37%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 460 1GB is superior to the GeForce GTX 285 2GB, not by a very large margin though. (explain)

GeForce GTX 460 1GB		21600 Mpixels/sec
GeForce GTX 285 2GB		20736 Mpixels/sec
	Difference: 864 (4%)

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 transported past the external memory interface in a second. The number is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the clock 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 also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.