GeForce GTS 450 1GB vs GeForce GTX 660 Ti

Intro

Compare that to the GeForce GTX 660 Ti, which comes with a clock speed of 915 MHz and a GDDR5 memory frequency of 1500 MHz. It also makes use of a 192-bit bus, and uses a 28 nm design. It is made up of 1344 SPUs, 112 TAUs, and 24 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 660 Ti		150 Watts
	Difference: 44 Watts (42%)

Memory Bandwidth

The GeForce GTX 660 Ti, in theory, should be a lot faster than the GeForce GTS 450 1GB in general. (explain)

GeForce GTX 660 Ti		144000 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 86272 (149%)

Texel Rate

The GeForce GTX 660 Ti is a lot (about 309%) more effective at texture filtering than the GeForce GTS 450 1GB. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 77424 (309%)

Pixel Rate

The GeForce GTX 660 Ti is much (approximately 75%) better at full screen anti-aliasing than the GeForce GTS 450 1GB, and will be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 9432 (75%)

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 (in units of megabytes 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 the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher 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 a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant 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.