GeForce GT 450 (OEM) vs GeForce GTX 550 Ti

Intro

Compare those specifications to the GeForce GTX 550 Ti, which makes use of a 40 nm design. nVidia has set the core speed at 900 MHz. The GDDR5 memory is set to run at a speed of 1026 MHz on this specific model. It features 192 SPUs as well as 32 Texture Address Units and 24 Rasterization Operator Units.

Display Graphs

Hide Graphs

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 theoretically be just a bit superior to the GeForce GT 450 (OEM) in general. (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 will be a lot (approximately 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

If using a high screen resolution is important to you, then the GeForce GTX 550 Ti is superior to the GeForce GT 450 (OEM), not by a very large margin though. (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 maximum amount of information (in units of MB per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total amount of texture units 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.