GeForce GTX 550 Ti vs Radeon HD 5570

Intro

Compare that to the Radeon HD 5570, which uses a 40 nm design. AMD has clocked the core frequency at 650 MHz. The DDR3 RAM runs at a frequency of 900 MHz on this particular card. It features 400(80x5) SPUs as well as 20 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
GeForce GTX 550 Ti		116 Watts
	Difference: 73 Watts (170%)

Memory Bandwidth

In theory, the GeForce GTX 550 Ti will be 242% faster than the Radeon HD 5570 overall, because of its higher data rate. (explain)

GeForce GTX 550 Ti		98496 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 69696 (242%)

Texel Rate

The GeForce GTX 550 Ti is a lot (approximately 122%) better at anisotropic filtering than the Radeon HD 5570. (explain)

GeForce GTX 550 Ti		28800 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 15800 (122%)

Pixel Rate

The GeForce GTX 550 Ti should be a lot (approximately 315%) faster with regards to AA than the Radeon HD 5570, and also will be capable of handling higher resolutions better. (explain)

GeForce GTX 550 Ti		21600 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 16400 (315%)

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 max amount of information (counted in MB per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. 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 number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant 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.