GeForce GTX 285 2GB vs Geforce GTX 690

Intro

Compare that to the Geforce GTX 690, which makes use of a 28 nm design. nVidia has set the core frequency at 915 MHz. The GDDR5 memory works at a frequency of 1502 MHz on this card. It features 1536 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 285 2GB		204 Watts
Geforce GTX 690		300 Watts
	Difference: 96 Watts (47%)

Memory Bandwidth

In theory, the Geforce GTX 690 will be 142% faster than the GeForce GTX 285 2GB in general, due to its greater data rate. (explain)

Geforce GTX 690		384512 MB/sec
GeForce GTX 285 2GB		158976 MB/sec
	Difference: 225536 (142%)

Texel Rate

The Geforce GTX 690 will be quite a bit (approximately 352%) better at anisotropic filtering than the GeForce GTX 285 2GB. (explain)

Geforce GTX 690		234240 Mtexels/sec
GeForce GTX 285 2GB		51840 Mtexels/sec
	Difference: 182400 (352%)

Pixel Rate

If using high levels of AA is important to you, then the Geforce GTX 690 is the winner, by a large margin. (explain)

Geforce GTX 690		58560 Mpixels/sec
GeForce GTX 285 2GB		20736 Mpixels/sec
	Difference: 37824 (182%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of information (measured in megabytes per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.