GeForce GTX 560 Ti 448 vs Radeon HD 5850

Intro

Compare those specs to the Radeon HD 5850, which has a clock frequency of 725 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 256-bit bus, and makes use of a 40 nm design. It features 1440(288x5) SPUs, 72 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5850		151 Watts
GeForce GTX 560 Ti 448		210 Watts
	Difference: 59 Watts (39%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 560 Ti 448 should theoretically be just a bit superior to the Radeon HD 5850 in general. (explain)

GeForce GTX 560 Ti 448		144000 MB/sec
Radeon HD 5850		128000 MB/sec
	Difference: 16000 (13%)

Texel Rate

The Radeon HD 5850 will be a lot (about 27%) faster with regards to anisotropic filtering than the GeForce GTX 560 Ti 448. (explain)

Radeon HD 5850		52200 Mtexels/sec
GeForce GTX 560 Ti 448		40992 Mtexels/sec
	Difference: 11208 (27%)

Pixel Rate

The GeForce GTX 560 Ti 448 will be quite a bit (about 26%) better at AA than the Radeon HD 5850, and also will be able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 560 Ti 448		29280 Mpixels/sec
Radeon HD 5850		23200 Mpixels/sec
	Difference: 6080 (26%)

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 data (measured in megabytes per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is worked out by multiplying the total number of 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 amount of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.