GeForce 8800 GS vs GeForce GTS 450 1GB

Intro

Compare that to the GeForce GTS 450 1GB, which comes with GPU clock speed of 783 MHz, and 1024 MB of GDDR5 memory running at 902 MHz through a 128-bit bus. It also features 192 SPUs, 32 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GS		105 Watts
GeForce GTS 450 1GB		106 Watts
	Difference: 1 Watts (1%)

Memory Bandwidth

Theoretically, the GeForce GTS 450 1GB should be a lot faster than the GeForce 8800 GS overall. (explain)

GeForce GTS 450 1GB		57728 MB/sec
GeForce 8800 GS		38400 MB/sec
	Difference: 19328 (50%)

Texel Rate

The GeForce 8800 GS should be just a bit (approximately 5%) more effective at anisotropic filtering than the GeForce GTS 450 1GB. (explain)

GeForce 8800 GS		26400 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 1344 (5%)

Pixel Rate

The GeForce GTS 450 1GB is much (approximately 90%) faster with regards to anti-aliasing than the GeForce 8800 GS, and also will be capable of handling higher resolutions more effectively. (explain)

GeForce GTS 450 1GB		12528 Mpixels/sec
GeForce 8800 GS		6600 Mpixels/sec
	Difference: 5928 (90%)

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 max amount of information (in units of megabytes per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This number is worked out by multiplying the total number of 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 processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video 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 Raster Operations Pipelines by the clock speed of the card. 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 quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.