GeForce GTX 560 Ti 448 vs Radeon HD 4870 X2

Intro

Compare that to the Radeon HD 4870 X2, which has core clock speeds of 750 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR5 memory. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560 Ti 448		210 Watts
Radeon HD 4870 X2		350 Watts
	Difference: 140 Watts (67%)

Memory Bandwidth

The Radeon HD 4870 X2 should in theory perform much faster than the GeForce GTX 560 Ti 448 in general. (explain)

Radeon HD 4870 X2		230400 MB/sec
GeForce GTX 560 Ti 448		144000 MB/sec
	Difference: 86400 (60%)

Texel Rate

The Radeon HD 4870 X2 is much (about 46%) faster with regards to AF than the GeForce GTX 560 Ti 448. (explain)

Radeon HD 4870 X2		60000 Mtexels/sec
GeForce GTX 560 Ti 448		40992 Mtexels/sec
	Difference: 19008 (46%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 560 Ti 448 is superior to the Radeon HD 4870 X2, and very much so. (explain)

GeForce GTX 560 Ti 448		29280 Mpixels/sec
Radeon HD 4870 X2		24000 Mpixels/sec
	Difference: 5280 (22%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of data (in units of megabytes per second) that can be transported past the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 amount of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes 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, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.