GeForce GTX 285 2GB vs GeForce GTX 560

Intro

Compare that to the GeForce GTX 560, which comes with GPU core speed of 810 MHz, and 1024 MB of GDDR5 RAM running at 1001 MHz through a 256-bit bus. It also features 336 Stream Processors, 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

In theory, the GeForce GTX 285 2GB will be 24% faster than the GeForce GTX 560 in general, 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 should be a bit (approximately 14%) more effective at 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

If running with lots of anti-aliasing is important to you, then the GeForce GTX 560 is superior to the GeForce GTX 285 2GB, by a large margin. (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 max amount of information (measured in megabytes per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.