GeForce GTX 560 vs Radeon HD 4850 512MB

Intro

Compare those specifications to the Radeon HD 4850 512MB, which has core clock speeds of 625 MHz on the GPU, and 993 MHz on the 512 MB of GDDR3 memory. It features 800(160x5) SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 512MB		110 Watts
GeForce GTX 560		150 Watts
	Difference: 40 Watts (36%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 560 should in theory be much superior to the Radeon HD 4850 512MB in general. (explain)

GeForce GTX 560		128128 MB/sec
Radeon HD 4850 512MB		63552 MB/sec
	Difference: 64576 (102%)

Texel Rate

The GeForce GTX 560 is much (more or less 81%) faster with regards to texture filtering than the Radeon HD 4850 512MB. (explain)

GeForce GTX 560		45360 Mtexels/sec
Radeon HD 4850 512MB		25000 Mtexels/sec
	Difference: 20360 (81%)

Pixel Rate

The GeForce GTX 560 is much (approximately 159%) faster with regards to anti-aliasing than the Radeon HD 4850 512MB, and capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 560		25920 Mpixels/sec
Radeon HD 4850 512MB		10000 Mpixels/sec
	Difference: 15920 (159%)

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 information (measured in megabytes per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 number of texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better 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 most pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.