GeForce 8800 GTS (G92) vs GeForce GTS 450

Intro

Compare those specifications to the GeForce GTS 450, which has core clock speeds of 783 MHz on the GPU, and 902 MHz on the 512 MB of GDDR5 RAM. It features 192 SPUs along with 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450		106 Watts
GeForce 8800 GTS (G92)		135 Watts
	Difference: 29 Watts (27%)

Memory Bandwidth

Performance-wise, the GeForce 8800 GTS (G92) should theoretically be a small bit better than the GeForce GTS 450 overall. (explain)

GeForce 8800 GTS (G92)		62080 MB/sec
GeForce GTS 450		57728 MB/sec
	Difference: 4352 (8%)

Texel Rate

The GeForce 8800 GTS (G92) will be quite a bit (approximately 66%) better at AF than the GeForce GTS 450. (explain)

GeForce 8800 GTS (G92)		41600 Mtexels/sec
GeForce GTS 450		25056 Mtexels/sec
	Difference: 16544 (66%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTS 450 is superior to the GeForce 8800 GTS (G92), but not by far. (explain)

GeForce GTS 450		12528 Mpixels/sec
GeForce 8800 GTS (G92)		10400 Mpixels/sec
	Difference: 2128 (20%)

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 max amount of information (counted in MB per second) that can be transferred across the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 processed in one second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to its 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 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 output rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.