GeForce 8800 GT 512MB vs Geforce GTX 780

Intro

Compare those specifications to the Geforce GTX 780, which has GPU core speed of 863 MHz, and 3072 MB of GDDR5 RAM running at 1502 MHz through a 384-bit bus. It also features 2304 Stream Processors, 192 TAUs, and 48 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 512MB		105 Watts
Geforce GTX 780		250 Watts
	Difference: 145 Watts (138%)

Memory Bandwidth

The Geforce GTX 780 should in theory be much faster than the GeForce 8800 GT 512MB in general. (explain)

Geforce GTX 780		288384 MB/sec
GeForce 8800 GT 512MB		57600 MB/sec
	Difference: 230784 (401%)

Texel Rate

The Geforce GTX 780 will be quite a bit (more or less 393%) better at texture filtering than the GeForce 8800 GT 512MB. (explain)

Geforce GTX 780		165696 Mtexels/sec
GeForce 8800 GT 512MB		33600 Mtexels/sec
	Difference: 132096 (393%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Geforce GTX 780 is a better choice, and very much so. (explain)

Geforce GTX 780		41424 Mpixels/sec
GeForce 8800 GT 512MB		9600 Mpixels/sec
	Difference: 31824 (332%)

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 largest amount of information (in units of MB per second) that can be transported over the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 are applied in one second. This number is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called 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 bandwidth is, the lower the potential to get to the maximum fill rate.