GeForce GTX 275 vs GeForce GTX 550 Ti

Intro

Compare those specifications to the GeForce GTX 550 Ti, which features a core clock speed of 900 MHz and a GDDR5 memory frequency of 1026 MHz. It also makes use of a 192-bit bus, and makes use of a 40 nm design. It is made up of 192 SPUs, 32 Texture Address Units, and 24 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 550 Ti		116 Watts
GeForce GTX 275		219 Watts
	Difference: 103 Watts (89%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 275 should theoretically be a lot superior to the GeForce GTX 550 Ti overall. (explain)

GeForce GTX 275		127008 MB/sec
GeForce GTX 550 Ti		98496 MB/sec
	Difference: 28512 (29%)

Texel Rate

The GeForce GTX 275 should be a lot (more or less 76%) faster with regards to texture filtering than the GeForce GTX 550 Ti. (explain)

GeForce GTX 275		50640 Mtexels/sec
GeForce GTX 550 Ti		28800 Mtexels/sec
	Difference: 21840 (76%)

Pixel Rate

The GeForce GTX 550 Ti will be a lot (more or less 22%) better at anti-aliasing than the GeForce GTX 275, and also will be able to handle higher screen resolutions more effectively. (explain)

GeForce GTX 550 Ti		21600 Mpixels/sec
GeForce GTX 275		17724 Mpixels/sec
	Difference: 3876 (22%)

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: Bandwidth is the largest amount of information (in units of MB per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. 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 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 better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka 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 memory bandwidth is, the lower the ability to get to the max fill rate.