GeForce GTX 550 Ti vs Radeon HD 5770

Intro

Compare those specs to the Radeon HD 5770, which comes with core speeds of 850 MHz on the GPU, and 1200 MHz on the 1024 MB of GDDR5 RAM. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5770		108 Watts
GeForce GTX 550 Ti		116 Watts
	Difference: 8 Watts (7%)

Memory Bandwidth

The GeForce GTX 550 Ti should theoretically perform much faster than the Radeon HD 5770 in general. (explain)

GeForce GTX 550 Ti		98496 MB/sec
Radeon HD 5770		76800 MB/sec
	Difference: 21696 (28%)

Texel Rate

The Radeon HD 5770 will be a little bit (more or less 18%) more effective at texture filtering than the GeForce GTX 550 Ti. (explain)

Radeon HD 5770		34000 Mtexels/sec
GeForce GTX 550 Ti		28800 Mtexels/sec
	Difference: 5200 (18%)

Pixel Rate

The GeForce GTX 550 Ti is a lot (about 59%) faster with regards to anti-aliasing than the Radeon HD 5770, and also capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 550 Ti		21600 Mpixels/sec
Radeon HD 5770		13600 Mpixels/sec
	Difference: 8000 (59%)

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 (counted in MB per second) that can be moved over the external memory interface within a second. It's 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 it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

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