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GeForce 8800 GT 512MB vs GeForce GTX 780 Ti

Intro

The GeForce 8800 GT 512MB uses a 65 nm design. nVidia has set the core speed at 600 MHz. The GDDR3 memory works at a frequency of 900 MHz on this card. It features 112 SPUs as well as 56 Texture Address Units and 16 ROPs.

Compare all of that to the GeForce GTX 780 Ti, which has a clock frequency of 875 MHz and a GDDR5 memory speed of 1750 MHz. It also uses a 384-bit memory bus, and makes use of a 28 nm design. It is comprised of 2880 SPUs, 240 Texture Address Units, and 48 Raster Operation Units.

(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

In theory, the GeForce GTX 780 Ti should be 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 is much (more or less 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 (more or less 338%) more effective at FSAA than the GeForce 8800 GT 512MB, and will be able to handle higher screen resolutions better. (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

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

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 largest amount of data (measured in megabytes per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, 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 the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs 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 rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

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