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GeForce 8800 GT 512MB vs GeForce GTX 780 Ti

Intro

The GeForce 8800 GT 512MB features a GPU core clock speed of 600 MHz, and the 512 MB of GDDR3 RAM is set to run at 900 MHz through a 256-bit bus. It also is comprised of 112 SPUs, 56 Texture Address Units, and 16 Raster Operation Units.

Compare those specifications to the GeForce GTX 780 Ti, which has a core clock speed of 875 MHz and a GDDR5 memory frequency of 1750 MHz. It also features a 384-bit bus, and makes use of a 28 nm design. It features 2880 SPUs, 240 Texture Address Units, 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 Ti 250 Watts
Difference: 145 Watts (138%)

Memory Bandwidth

The GeForce GTX 780 Ti should in theory perform a lot faster than the GeForce 8800 GT 512MB in general. (explain)

GeForce GTX 780 Ti 336000 MB/sec
GeForce 8800 GT 512MB 57600 MB/sec
Difference: 278400 (483%)

Texel Rate

The GeForce GTX 780 Ti will be much (about 525%) more effective at AF than the GeForce 8800 GT 512MB. (explain)

GeForce GTX 780 Ti 210000 Mtexels/sec
GeForce 8800 GT 512MB 33600 Mtexels/sec
Difference: 176400 (525%)

Pixel Rate

The GeForce GTX 780 Ti will be a lot (approximately 338%) more effective at full screen anti-aliasing than the GeForce 8800 GT 512MB, and will be able to handle higher resolutions more effectively. (explain)

GeForce GTX 780 Ti 42000 Mpixels/sec
GeForce 8800 GT 512MB 9600 Mpixels/sec
Difference: 32400 (338%)

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

GeForce 8800 GT 512MB

GeForce GTX 780 Ti

Specifications

Display Specifications

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Model GeForce 8800 GT 512MB GeForce GTX 780 Ti
Manufacturer nVidia nVidia
Year Oct 2007 November 2013
Code Name G92 GK110
Memory 512 MB 3072 MB
Core Speed 600 MHz 875 MHz
Memory Speed 1800 MHz 7000 MHz
Power (Max TDP) 105 watts 250 watts
Bandwidth 57600 MB/sec 336000 MB/sec
Texel Rate 33600 Mtexels/sec 210000 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 42000 Mpixels/sec
Unified Shaders 112 2880
Texture Mapping Units 56 240
Render Output Units 16 48
Bus Type GDDR3 GDDR5
Bus Width 256-bit 384-bit
Fab Process 65 nm 28 nm
Transistors 754 million 7080 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.0
OpenGL Version OpenGL 3.0 OpenGL 4.4

Memory Bandwidth: Bandwidth is the max amount of information (measured in megabytes per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, 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 per second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a 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 number is worked out by multiplying the amount of Render Output Units by the the core 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 quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

GeForce 8800 GT 512MB

GeForce GTX 780 Ti

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