GeForce GTS 450 1GB vs GeForce GTX 560 Ti

Intro

Compare those specs to the GeForce GTX 560 Ti, which comes with a GPU core clock speed of 822 MHz, and 1024 MB of GDDR5 memory running at 1002 MHz through a 256-bit bus. It also is comprised of 384 Stream Processors, 64 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 1GB		106 Watts
GeForce GTX 560 Ti		170 Watts
	Difference: 64 Watts (60%)

Memory Bandwidth

Theoretically, the GeForce GTX 560 Ti should perform much faster than the GeForce GTS 450 1GB in general. (explain)

GeForce GTX 560 Ti		128256 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 70528 (122%)

Texel Rate

The GeForce GTX 560 Ti is much (more or less 110%) better at anisotropic filtering than the GeForce GTS 450 1GB. (explain)

GeForce GTX 560 Ti		52608 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 27552 (110%)

Pixel Rate

The GeForce GTX 560 Ti should be much (more or less 110%) better at FSAA than the GeForce GTS 450 1GB, and should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 560 Ti		26304 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 13776 (110%)

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 (measured in megabytes per second) that can be moved across the external memory interface in one second. It's calculated by multiplying the bus width by its memory speed. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs 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 output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.