GeForce 8800 GS vs GeForce GTS 450

Intro

Compare all that to the GeForce GTS 450, which uses a 40 nm design. nVidia has set the core speed at 783 MHz. The GDDR5 RAM is set to run at a speed of 902 MHz on this specific model. It features 192 SPUs along with 32 TAUs 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		106 Watts
	Difference: 1 Watts (1%)

Memory Bandwidth

The GeForce GTS 450 should in theory be quite a bit faster than the GeForce 8800 GS in general. (explain)

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

Texel Rate

The GeForce 8800 GS is just a bit (about 5%) faster with regards to texture filtering than the GeForce GTS 450. (explain)

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

Pixel Rate

If using a high resolution is important to you, then the GeForce GTS 450 is superior to the GeForce 8800 GS, and very much so. (explain)

GeForce GTS 450		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 largest amount of information (counted in MB per second) that can be transferred over the external memory interface in one second. It's worked out by multiplying the bus width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher the texel rate, the better the 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 most pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.