GeForce GTX 560 Ti vs Radeon HD 4850 512MB

Intro

Compare all of that to the Radeon HD 4850 512MB, which comes with GPU core speed of 625 MHz, and 512 MB of GDDR3 RAM set to run at 993 MHz through a 256-bit bus. It also features 800(160x5) Stream Processors, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 512MB		110 Watts
GeForce GTX 560 Ti		170 Watts
	Difference: 60 Watts (55%)

Memory Bandwidth

Theoretically, the GeForce GTX 560 Ti should perform a lot faster than the Radeon HD 4850 512MB overall. (explain)

GeForce GTX 560 Ti		128256 MB/sec
Radeon HD 4850 512MB		63552 MB/sec
	Difference: 64704 (102%)

Texel Rate

The GeForce GTX 560 Ti is a lot (more or less 110%) better at anisotropic filtering than the Radeon HD 4850 512MB. (explain)

GeForce GTX 560 Ti		52608 Mtexels/sec
Radeon HD 4850 512MB		25000 Mtexels/sec
	Difference: 27608 (110%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 560 Ti is the winner, and very much so. (explain)

GeForce GTX 560 Ti		26304 Mpixels/sec
Radeon HD 4850 512MB		10000 Mpixels/sec
	Difference: 16304 (163%)

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 megabytes per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If 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 higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory in a 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 also depends 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.