GeForce GTX 560 Ti 448 vs Radeon HD 5850

Intro

Compare all of that to the Radeon HD 5850, which uses a 40 nm design. AMD has clocked the core frequency at 725 MHz. The GDDR5 memory works at a speed of 1000 MHz on this specific model. It features 1440(288x5) SPUs as well as 72 Texture Address Units and 32 ROPs.

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

Theoretically speaking, the GeForce GTX 560 Ti 448 will be 13% quicker than the Radeon HD 5850 overall, because of its greater bandwidth. (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 quite a bit (approximately 27%) faster with regards to AF 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 much (about 26%) faster with regards to FSAA than the Radeon HD 5850, and able to handle higher resolutions without slowing down too much. (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 (counted in MB per second) that can be moved over the external memory interface in a second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out 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 filling the screen with pixels (the image). The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.