GeForce GTX 285 2GB vs GeForce GTX 570

Intro

Compare those specs to the GeForce GTX 570, which has a clock frequency of 732 MHz and a GDDR5 memory speed of 950 MHz. It also uses a 320-bit memory bus, and uses a 40 nm design. It is comprised of 480 SPUs, 60 Texture Address Units, and 40 ROPs.

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

Theoretically, the GeForce GTX 285 2GB should be a little 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 should be a small bit (approximately 18%) better at anisotropic filtering 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 much (about 41%) better at AA than the GeForce GTX 285 2GB, and also should be capable of handling higher resolutions while still performing well. (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: Bandwidth is the largest amount of data (counted in megabytes per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR memory, it must 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 higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.