GeForce 8600 GT 1GB DDR2 vs GeForce GTX 780 Ti

Intro

Compare those specs to the GeForce GTX 780 Ti, which features core clock speeds of 875 MHz on the GPU, and 1750 MHz on the 3072 MB of GDDR5 RAM. It features 2880 SPUs along with 240 Texture Address Units and 48 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 1GB DDR2		47 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 203 Watts (432%)

Memory Bandwidth

The GeForce GTX 780 Ti should theoretically be much faster than the GeForce 8600 GT 1GB DDR2 overall. (explain)

GeForce GTX 780 Ti		336000 MB/sec
GeForce 8600 GT 1GB DDR2		12800 MB/sec
	Difference: 323200 (2525%)

Texel Rate

The GeForce GTX 780 Ti will be much (more or less 2331%) better at anisotropic filtering than the GeForce 8600 GT 1GB DDR2. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
GeForce 8600 GT 1GB DDR2		8640 Mtexels/sec
	Difference: 201360 (2331%)

Pixel Rate

The GeForce GTX 780 Ti is a lot (more or less 872%) faster with regards to anti-aliasing than the GeForce 8600 GT 1GB DDR2, and should be capable of handling higher screen resolutions better. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
GeForce 8600 GT 1GB DDR2		4320 Mpixels/sec
	Difference: 37680 (872%)

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 (measured in MB per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the video 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 amount of pixels the video card can possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.