GeForce 8800 Ultra vs GeForce GTX 950

Intro

Compare all of that to the GeForce GTX 950, which has a clock frequency of 1024 MHz and a GDDR5 memory frequency of 1652 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It 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

In theory, the GeForce GTX 950 should be just a bit faster than the GeForce 8800 Ultra overall. (explain)

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

Texel Rate

The GeForce GTX 950 should be quite a bit (more or less 25%) more effective at texture filtering 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 will be a lot (about 123%) faster with regards to full screen anti-aliasing than the GeForce 8800 Ultra, and also should be able to handle higher resolutions while still performing well. (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 maximum amount of information (measured in MB per second) that can be moved over the external memory interface in a second. The number is calculated by multiplying the interface width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.