GeForce 8800 GT 512MB vs GeForce GTS 450 1GB

Intro

Compare all that to the GeForce GTS 450 1GB, which features core clock speeds of 783 MHz on the GPU, and 902 MHz on the 1024 MB of GDDR5 memory. It features 192 SPUs along with 32 Texture Address Units 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 1GB		106 Watts
	Difference: 1 Watts (1%)

Memory Bandwidth

Performance-wise, the GeForce GTS 450 1GB should in theory be just a bit better than the GeForce 8800 GT 512MB in general. (explain)

GeForce GTS 450 1GB		57728 MB/sec
GeForce 8800 GT 512MB		57600 MB/sec
	Difference: 128 (0%)

Texel Rate

The GeForce 8800 GT 512MB should be quite a bit (about 34%) faster with regards to texture filtering than the GeForce GTS 450 1GB. (explain)

GeForce 8800 GT 512MB		33600 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 8544 (34%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTS 450 1GB is the winner, by far. (explain)

GeForce GTS 450 1GB		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 maximum amount of data (in units of MB per second) that can be transported across the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If it uses DDR memory, it should be multiplied by 2 once 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, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the core 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 rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.