GeForce 8600 GT 1GB DDR2 vs GeForce GTX 780 Ti

Intro

Compare those specs to the GeForce GTX 780 Ti, which uses a 28 nm design. nVidia has clocked the core frequency at 875 MHz. The GDDR5 memory runs at a speed of 1750 MHz on this model. It features 2880 SPUs along with 240 TAUs 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 in theory perform much faster than the GeForce 8600 GT 1GB DDR2 in general. (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 is a lot (approximately 2331%) more effective at AF 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

If running with a high resolution is important to you, then the GeForce GTX 780 Ti is superior to the GeForce 8600 GT 1GB DDR2, by a large margin. (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: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per 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. Pixel rate is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.