GeForce GTX 285 1GB vs GeForce GTX 460 2GB

Intro

Compare those specifications to the GeForce GTX 460 2GB, which features core speeds of 675 MHz on the GPU, and 900 MHz on the 2048 MB of GDDR5 memory. It features 336 SPUs along with 56 Texture Address Units and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

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

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

Texel Rate

The GeForce GTX 285 1GB is much (about 37%) better at anisotropic filtering than the GeForce GTX 460 2GB. (explain)

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

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 460 2GB is the winner, but only just. (explain)

GeForce GTX 460 2GB		21600 Mpixels/sec
GeForce GTX 285 1GB		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 (in units of MB per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number 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 clock speed of the chip. The better this number, the better the 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 record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.