GeForce GTX 550 Ti vs Radeon HD 5750 1GB

Intro

Compare those specs to the Radeon HD 5750 1GB, which comes with a clock frequency of 700 MHz and a GDDR5 memory frequency of 1150 MHz. It also features a 128-bit memory bus, and makes use of a 40 nm design. It is comprised of 720(144x5) SPUs, 36 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 1GB		86 Watts
GeForce GTX 550 Ti		116 Watts
	Difference: 30 Watts (35%)

Memory Bandwidth

In theory, the GeForce GTX 550 Ti should be a lot faster than the Radeon HD 5750 1GB overall. (explain)

GeForce GTX 550 Ti		98496 MB/sec
Radeon HD 5750 1GB		73600 MB/sec
	Difference: 24896 (34%)

Texel Rate

The GeForce GTX 550 Ti will be a small bit (about 14%) faster with regards to anisotropic filtering than the Radeon HD 5750 1GB. (explain)

GeForce GTX 550 Ti		28800 Mtexels/sec
Radeon HD 5750 1GB		25200 Mtexels/sec
	Difference: 3600 (14%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 550 Ti is the winner, by far. (explain)

GeForce GTX 550 Ti		21600 Mpixels/sec
Radeon HD 5750 1GB		11200 Mpixels/sec
	Difference: 10400 (93%)

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 max amount of information (in units of megabytes per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. 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 ability to get to the maximum fill rate.