GeForce 8800 Ultra vs GeForce GTS 450 1GB

Intro

Compare all of that to the GeForce GTS 450 1GB, which has a clock frequency of 783 MHz and a GDDR5 memory speed of 902 MHz. It also makes use of a 128-bit bus, and makes use of a 40 nm design. It features 192 SPUs, 32 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 1GB		106 Watts
GeForce 8800 Ultra		171 Watts
	Difference: 65 Watts (61%)

Memory Bandwidth

Performance-wise, the GeForce 8800 Ultra should in theory be a lot superior to the GeForce GTS 450 1GB overall. (explain)

GeForce 8800 Ultra		103680 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 45952 (80%)

Texel Rate

The GeForce 8800 Ultra will be much (more or less 56%) better at anisotropic filtering than the GeForce GTS 450 1GB. (explain)

GeForce 8800 Ultra		39168 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 14112 (56%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce 8800 Ultra is the winner, though only just barely. (explain)

GeForce 8800 Ultra		14688 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 2160 (17%)

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 maximum amount of information (counted in megabytes per second) that can be moved over the external memory interface in a second. It's calculated by multiplying the interface width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once 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 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 the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.