GeForce GTX 285 2GB vs GeForce GTX 570

Intro

Compare those specs to the GeForce GTX 570, which features clock speeds of 732 MHz on the GPU, and 950 MHz on the 1280 MB of GDDR5 RAM. It features 480 SPUs along with 60 Texture Address Units and 40 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 285 2GB		204 Watts
GeForce GTX 570		219 Watts
	Difference: 15 Watts (7%)

Memory Bandwidth

The GeForce GTX 285 2GB, in theory, should perform a bit faster than the GeForce GTX 570 overall. (explain)

GeForce GTX 285 2GB		158976 MB/sec
GeForce GTX 570		152000 MB/sec
	Difference: 6976 (5%)

Texel Rate

The GeForce GTX 285 2GB will be a bit (more or less 18%) more effective at AF than the GeForce GTX 570. (explain)

GeForce GTX 285 2GB		51840 Mtexels/sec
GeForce GTX 570		43920 Mtexels/sec
	Difference: 7920 (18%)

Pixel Rate

The GeForce GTX 570 should be a lot (about 41%) faster with regards to FSAA than the GeForce GTX 285 2GB, and will be capable of handling higher screen resolutions better. (explain)

GeForce GTX 570		29280 Mpixels/sec
GeForce GTX 285 2GB		20736 Mpixels/sec
	Difference: 8544 (41%)

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 (in units of MB per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 amount of texture map elements (texels) that are processed per second. This is worked out by multiplying the total amount of texture units of the card by the core 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 per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to 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 maximum fill rate.