GeForce GTX 560 Ti 448 vs Radeon HD 5870

Intro

Compare those specs to the Radeon HD 5870, which comes with core clock speeds of 850 MHz on the GPU, and 1200 MHz on the 1024 MB of GDDR5 memory. It features 1600(320x5) SPUs as well as 80 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5870		188 Watts
GeForce GTX 560 Ti 448		210 Watts
	Difference: 22 Watts (12%)

Memory Bandwidth

The Radeon HD 5870 should in theory be a little bit faster than the GeForce GTX 560 Ti 448 in general. (explain)

Radeon HD 5870		153600 MB/sec
GeForce GTX 560 Ti 448		144000 MB/sec
	Difference: 9600 (7%)

Texel Rate

The Radeon HD 5870 will be much (more or less 66%) more effective at texture filtering than the GeForce GTX 560 Ti 448. (explain)

Radeon HD 5870		68000 Mtexels/sec
GeForce GTX 560 Ti 448		40992 Mtexels/sec
	Difference: 27008 (66%)

Pixel Rate

The GeForce GTX 560 Ti 448 is just a bit (approximately 8%) more effective at AA than the Radeon HD 5870, and also capable of handling higher resolutions better. (explain)

GeForce GTX 560 Ti 448		29280 Mpixels/sec
Radeon HD 5870		27200 Mpixels/sec
	Difference: 2080 (8%)

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

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total number of texture units of the card by the core clock 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 processed in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.