GeForce 8800 Ultra vs GeForce GTX 950

Intro

Compare all that to the GeForce GTX 950, which has GPU clock speed of 1024 MHz, and 2048 MB of GDDR5 memory set to run at 1652 MHz through a 128-bit bus. It also is made up of 768 SPUs, 48 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 950		90 Watts
GeForce 8800 Ultra		171 Watts
	Difference: 81 Watts (90%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 950 should theoretically be just a bit superior to the GeForce 8800 Ultra in general. (explain)

GeForce GTX 950		105728 MB/sec
GeForce 8800 Ultra		103680 MB/sec
	Difference: 2048 (2%)

Texel Rate

The GeForce GTX 950 will be a lot (more or less 25%) better at AF than the GeForce 8800 Ultra. (explain)

GeForce GTX 950		49152 Mtexels/sec
GeForce 8800 Ultra		39168 Mtexels/sec
	Difference: 9984 (25%)

Pixel Rate

The GeForce GTX 950 is much (approximately 123%) better at anti-aliasing than the GeForce 8800 Ultra, and should be capable of handling higher resolutions more effectively. (explain)

GeForce GTX 950		32768 Mpixels/sec
GeForce 8800 Ultra		14688 Mpixels/sec
	Difference: 18080 (123%)

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 largest amount of information (counted in MB per second) that can be moved across the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 amount of texture map elements (texels) that are applied in one second. This figure 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 video 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 most pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.