GeForce GTX 285 2GB vs GeForce GTX 560

Intro

Compare that to the GeForce GTX 560, which comes with core clock speeds of 810 MHz on the GPU, and 1001 MHz on the 1024 MB of GDDR5 RAM. It features 336 SPUs along with 56 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560		150 Watts
GeForce GTX 285 2GB		204 Watts
	Difference: 54 Watts (36%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 285 2GB will be 24% faster than the GeForce GTX 560 overall, because of its greater bandwidth. (explain)

GeForce GTX 285 2GB		158976 MB/sec
GeForce GTX 560		128128 MB/sec
	Difference: 30848 (24%)

Texel Rate

The GeForce GTX 285 2GB is a small bit (more or less 14%) faster with regards to AF than the GeForce GTX 560. (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
GeForce GTX 560		45360 Mtexels/sec
	Difference: 6480 (14%)

Pixel Rate

The GeForce GTX 560 should be a lot (more or less 25%) better at full screen anti-aliasing than the GeForce GTX 285 2GB, and also capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 560		25920 Mpixels/sec
GeForce GTX 285 2GB		20736 Mpixels/sec
	Difference: 5184 (25%)

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 information (measured in megabytes per second) that can be transported over the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 again. If 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total number of texture units of the card by the core clock 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 amount of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.