GeForce 8800 GT 512MB vs GeForce GTS 450

Intro

Compare those specs to the GeForce GTS 450, which has a clock frequency of 783 MHz and a GDDR5 memory speed of 902 MHz. It also uses a 128-bit bus, and uses a 40 nm design. It features 192 SPUs, 32 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GT 512MB		105 Watts
GeForce GTS 450		106 Watts
	Difference: 1 Watts (1%)

Memory Bandwidth

In theory, the GeForce GTS 450 should be a bit faster than the GeForce 8800 GT 512MB overall. (explain)

GeForce GTS 450		57728 MB/sec
GeForce 8800 GT 512MB		57600 MB/sec
	Difference: 128 (0%)

Texel Rate

The GeForce 8800 GT 512MB will be a lot (more or less 34%) better at AF than the GeForce GTS 450. (explain)

GeForce 8800 GT 512MB		33600 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 8544 (34%)

Pixel Rate

The GeForce GTS 450 is much (more or less 31%) faster with regards to anti-aliasing than the GeForce 8800 GT 512MB, and able to handle higher resolutions better. (explain)

GeForce GTS 450		12528 Mpixels/sec
GeForce 8800 GT 512MB		9600 Mpixels/sec
	Difference: 2928 (31%)

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 data (in units of megabytes per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the bus width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core speed of the card. 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 fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.