GeForce 8800 GT 256MB vs GeForce GTX 950

Intro

Compare those specs to the GeForce GTX 950, which comes with clock speeds of 1024 MHz on the GPU, and 1652 MHz on the 2048 MB of GDDR5 memory. It features 768 SPUs as well as 48 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950		90 Watts
GeForce 8800 GT 256MB		105 Watts
	Difference: 15 Watts (17%)

Memory Bandwidth

Performance-wise, the GeForce GTX 950 should theoretically be a lot superior to the GeForce 8800 GT 256MB overall. (explain)

GeForce GTX 950		105728 MB/sec
GeForce 8800 GT 256MB		44800 MB/sec
	Difference: 60928 (136%)

Texel Rate

The GeForce GTX 950 should be a lot (about 46%) more effective at anisotropic filtering than the GeForce 8800 GT 256MB. (explain)

GeForce GTX 950		49152 Mtexels/sec
GeForce 8800 GT 256MB		33600 Mtexels/sec
	Difference: 15552 (46%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 950 is a better choice, and very much so. (explain)

GeForce GTX 950		32768 Mpixels/sec
GeForce 8800 GT 256MB		9600 Mpixels/sec
	Difference: 23168 (241%)

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 max amount of information (counted in MB per second) that can be transferred past the external memory interface in one second. It's worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total texture units of the card 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 processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount 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 fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.