GeForce 8600 GT 1GB GDDR3 vs Geforce GTX 780

Intro

Compare those specs to the Geforce GTX 780, which comes with core clock speeds of 863 MHz on the GPU, and 1502 MHz on the 3072 MB of GDDR5 RAM. It features 2304 SPUs along with 192 TAUs and 48 Rasterization Operator Units.

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		250 Watts
	Difference: 203 Watts (432%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 780 is 1187% faster than the GeForce 8600 GT 1GB GDDR3 in general, due to its greater bandwidth. (explain)

Geforce GTX 780		288384 MB/sec
GeForce 8600 GT 1GB GDDR3		22400 MB/sec
	Difference: 265984 (1187%)

Texel Rate

The Geforce GTX 780 should be much (about 1818%) faster with regards to anisotropic filtering than the GeForce 8600 GT 1GB GDDR3. (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce 8600 GT 1GB GDDR3		8640 Mtexels/sec
	Difference: 157056 (1818%)

Pixel Rate

The Geforce GTX 780 is much (more or less 859%) faster with regards to full screen anti-aliasing than the GeForce 8600 GT 1GB GDDR3, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

Geforce GTX 780		41424 Mpixels/sec
GeForce 8600 GT 1GB GDDR3		4320 Mpixels/sec
	Difference: 37104 (859%)

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 data (measured in MB per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.