GeForce GT 450 (OEM) vs GeForce GTX 550 Ti

Intro

Compare all that to the GeForce GTX 550 Ti, which features core clock speeds of 900 MHz on the GPU, and 1026 MHz on the 1024 MB of GDDR5 RAM. It features 192 SPUs as well as 32 Texture Address Units and 24 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
GeForce GTX 550 Ti		116 Watts
	Difference: 10 Watts (9%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 550 Ti should in theory be a small bit better than the GeForce GT 450 (OEM) overall. (explain)

GeForce GTX 550 Ti		98496 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 2496 (3%)

Texel Rate

The GeForce GTX 550 Ti should be much (about 52%) faster with regards to AF than the GeForce GT 450 (OEM). (explain)

GeForce GTX 550 Ti		28800 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 9840 (52%)

Pixel Rate

The GeForce GTX 550 Ti should be a bit (approximately 14%) more effective at FSAA than the GeForce GT 450 (OEM), and also will be capable of handling higher resolutions while still performing well. (explain)

GeForce GTX 550 Ti		21600 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 2640 (14%)

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 data (in units of MB per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. In the case of DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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