GeForce GTX 560 Ti vs Radeon HD 4870 X2

Intro

Compare those specifications to the Radeon HD 4870 X2, which features GPU core speed of 750 MHz, and 1024 MB of GDDR5 RAM set to run at 900 MHz through a 256-bit bus. It also is made up of 800(160x5) Stream Processors, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560 Ti		170 Watts
Radeon HD 4870 X2		350 Watts
	Difference: 180 Watts (106%)

Memory Bandwidth

Theoretically, the Radeon HD 4870 X2 should be much faster than the GeForce GTX 560 Ti overall. (explain)

Radeon HD 4870 X2		230400 MB/sec
GeForce GTX 560 Ti		128256 MB/sec
	Difference: 102144 (80%)

Texel Rate

The Radeon HD 4870 X2 is a little bit (about 14%) faster with regards to texture filtering than the GeForce GTX 560 Ti. (explain)

Radeon HD 4870 X2		60000 Mtexels/sec
GeForce GTX 560 Ti		52608 Mtexels/sec
	Difference: 7392 (14%)

Pixel Rate

The GeForce GTX 560 Ti will be just a bit (approximately 10%) better at FSAA than the Radeon HD 4870 X2, and also capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 560 Ti		26304 Mpixels/sec
Radeon HD 4870 X2		24000 Mpixels/sec
	Difference: 2304 (10%)

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 max amount of data (in units of megabytes per second) that can be transferred over the external memory interface within a second. It is worked out by multiplying the card's interface width by its memory speed. In the case of DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the 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 that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.