GeForce GTX 285 1GB vs GeForce GTX 570

Intro

Compare those specifications to the GeForce GTX 570, which comes with core clock speeds of 732 MHz on the GPU, and 950 MHz on the 1280 MB of GDDR5 RAM. It features 480 SPUs as well as 60 TAUs and 40 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 285 1GB		204 Watts
GeForce GTX 570		219 Watts
	Difference: 15 Watts (7%)

Memory Bandwidth

Theoretically, the GeForce GTX 285 1GB should be a little bit faster than the GeForce GTX 570 in general. (explain)

GeForce GTX 285 1GB		158976 MB/sec
GeForce GTX 570		152000 MB/sec
	Difference: 6976 (5%)

Texel Rate

The GeForce GTX 285 1GB is just a bit (about 18%) faster with regards to anisotropic filtering than the GeForce GTX 570. (explain)

GeForce GTX 285 1GB		51840 Mtexels/sec
GeForce GTX 570		43920 Mtexels/sec
	Difference: 7920 (18%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 570 is a better choice, and very much so. (explain)

GeForce GTX 570		29280 Mpixels/sec
GeForce GTX 285 1GB		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 largest amount of information (in units of megabytes per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. 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 are applied per second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.