GeForce 8600 GT 1GB GDDR3 vs GeForce GTX 780 Ti

Intro

Compare all that to the GeForce GTX 780 Ti, which features GPU clock speed of 875 MHz, and 3072 MB of GDDR5 memory running at 1750 MHz through a 384-bit bus. It also is made up of 2880 SPUs, 240 TAUs, and 48 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8600 GT 1GB GDDR3		47 Watts
GeForce GTX 780 Ti		250 Watts
	Difference: 203 Watts (432%)

Memory Bandwidth

Theoretically, the GeForce GTX 780 Ti should perform a lot faster than the GeForce 8600 GT 1GB GDDR3 overall. (explain)

GeForce GTX 780 Ti		336000 MB/sec
GeForce 8600 GT 1GB GDDR3		22400 MB/sec
	Difference: 313600 (1400%)

Texel Rate

The GeForce GTX 780 Ti will be quite a bit (approximately 2331%) better at anisotropic filtering than the GeForce 8600 GT 1GB GDDR3. (explain)

GeForce GTX 780 Ti		210000 Mtexels/sec
GeForce 8600 GT 1GB GDDR3		8640 Mtexels/sec
	Difference: 201360 (2331%)

Pixel Rate

The GeForce GTX 780 Ti will be quite a bit (approximately 872%) better at full screen anti-aliasing than the GeForce 8600 GT 1GB GDDR3, and also will be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 780 Ti		42000 Mpixels/sec
GeForce 8600 GT 1GB GDDR3		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 (measured in megabytes per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.