GeForce 8800 GTS (G80) 320MB vs GeForce GTX 950

Intro

Compare those specifications to the GeForce GTX 950, which has clock speeds of 1024 MHz on the GPU, and 1652 MHz on the 2048 MB of GDDR5 RAM. It features 768 SPUs along with 48 Texture Address Units 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 GTS (G80) 320MB		143 Watts
	Difference: 53 Watts (59%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 950 should theoretically be much superior to the GeForce 8800 GTS (G80) 320MB in general. (explain)

GeForce GTX 950		105728 MB/sec
GeForce 8800 GTS (G80) 320MB		63360 MB/sec
	Difference: 42368 (67%)

Texel Rate

The GeForce GTX 950 is quite a bit (about 100%) better at texture filtering than the GeForce 8800 GTS (G80) 320MB. (explain)

GeForce GTX 950		49152 Mtexels/sec
GeForce 8800 GTS (G80) 320MB		24624 Mtexels/sec
	Difference: 24528 (100%)

Pixel Rate

The GeForce GTX 950 is much (about 219%) faster with regards to AA than the GeForce 8800 GTS (G80) 320MB, and also able to handle higher resolutions while still performing well. (explain)

GeForce GTX 950		32768 Mpixels/sec
GeForce 8800 GTS (G80) 320MB		10260 Mpixels/sec
	Difference: 22508 (219%)

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 max amount of information (counted in megabytes per second) that can be transferred over the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen 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 amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.