GeForce GTX 285 2GB vs GeForce GTX 560

Intro

Compare those specs to the GeForce GTX 560, which comes with clock speeds of 810 MHz on the GPU, and 1001 MHz on the 1024 MB of GDDR5 memory. It features 336 SPUs along with 56 Texture Address Units and 32 ROPs.

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% quicker than the GeForce GTX 560 overall, due to its higher data rate. (explain)

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

Texel Rate

The GeForce GTX 285 2GB will be a little bit (about 14%) faster with regards to texture filtering 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 will be much (about 25%) more effective at anti-aliasing than the GeForce GTX 285 2GB, and also should be capable of handling higher screen resolutions more effectively. (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: Memory bandwidth is the largest amount of data (counted in MB per second) that can be transported across the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 applied in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.