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GeForce 8800 GT 512MB vs GeForce GTX 780 Ti

Intro

The GeForce 8800 GT 512MB features a clock speed of 600 MHz and a GDDR3 memory frequency of 900 MHz. It also uses a 256-bit memory bus, and makes use of a 65 nm design. It is comprised of 112 SPUs, 56 TAUs, and 16 Raster Operation Units.

Compare all of that to the GeForce GTX 780 Ti, which comes with core clock speeds of 875 MHz on the GPU, and 1750 MHz on the 3072 MB of GDDR5 memory. It features 2880 SPUs along with 240 TAUs and 48 ROPs.

Display Graphs

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(No game benchmarks for this combination yet.)

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 theoretically perform much 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 is a lot (more or less 525%) faster with regards to 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 is quite a bit (more or less 338%) more effective at AA than the GeForce 8800 GT 512MB, and also able to handle higher screen resolutions without losing too much performance. (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

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GeForce 8800 GT 512MB

Amazon.com

GeForce GTX 780 Ti

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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
Fab Process 65 nm 28 nm
Bus PCIe x16 2.0 PCIe 3.0 x16
Memory 512 MB 3072 MB
Core Speed 600 MHz 875 MHz
Shader Speed 1500 MHz (N/A) MHz
Memory Speed 900 MHz (1800 MHz effective) 1750 MHz (7000 MHz effective)
Unified Shaders 112 2880
Texture Mapping Units 56 240
Render Output Units 16 48
Bus Type GDDR3 GDDR5
Bus Width 256-bit 384-bit
DirectX Version DirectX 10 DirectX 11.0
OpenGL Version OpenGL 3.0 OpenGL 4.4
Power (Max TDP) 105 watts 250 watts
Shader Model 4.0 5.0
Bandwidth 57600 MB/sec 336000 MB/sec
Texel Rate 33600 Mtexels/sec 210000 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 42000 Mpixels/sec

Memory Bandwidth: Bandwidth is the max amount of information (in units of megabytes per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type memory, the result 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 AA, HDR and high resolutions.

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

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

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