GeForce GTX 580 3GB vs GeForce GTX 980 Ti

Intro

Compare those specs to the GeForce GTX 980 Ti, which uses a 28 nm design. nVidia has set the core speed at 1000 MHz. The GDDR5 RAM works at a frequency of 1750 MHz on this particular model. It features 2816 SPUs as well as 176 TAUs and 96 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 580 3GB		244 Watts
GeForce GTX 980 Ti		250 Watts
	Difference: 6 Watts (2%)

Memory Bandwidth

Theoretically, the GeForce GTX 980 Ti should be a lot faster than the GeForce GTX 580 3GB overall. (explain)

GeForce GTX 980 Ti		336000 MB/sec
GeForce GTX 580 3GB		192384 MB/sec
	Difference: 143616 (75%)

Texel Rate

The GeForce GTX 980 Ti will be quite a bit (more or less 256%) faster with regards to anisotropic filtering than the GeForce GTX 580 3GB. (explain)

GeForce GTX 980 Ti		176000 Mtexels/sec
GeForce GTX 580 3GB		49408 Mtexels/sec
	Difference: 126592 (256%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 980 Ti is superior to the GeForce GTX 580 3GB, and very much so. (explain)

GeForce GTX 980 Ti		96000 Mpixels/sec
GeForce GTX 580 3GB		37056 Mpixels/sec
	Difference: 58944 (159%)

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 information (in units of megabytes per second) that can be transported over the external memory interface in a second. It's calculated by multiplying the bus width by its memory speed. If it uses DDR memory, it 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 AA, HDR and higher screen resolutions.

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

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