GeForce GTX 560 Ti vs Radeon R9 M280X

Intro

Compare those specifications to the Radeon R9 M280X, which makes use of a 28 nm design. AMD has set the core speed at 900 MHz. The GDDR5 RAM runs at a frequency of 1375 MHz on this model. It features 896 SPUs as well as 56 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M280X		75 Watts
GeForce GTX 560 Ti		170 Watts
	Difference: 95 Watts (127%)

Memory Bandwidth

Performance-wise, the GeForce GTX 560 Ti should in theory be quite a bit superior to the Radeon R9 M280X in general. (explain)

GeForce GTX 560 Ti		128256 MB/sec
Radeon R9 M280X		88000 MB/sec
	Difference: 40256 (46%)

Texel Rate

The GeForce GTX 560 Ti will be just a bit (about 4%) faster with regards to anisotropic filtering than the Radeon R9 M280X. (explain)

GeForce GTX 560 Ti		52608 Mtexels/sec
Radeon R9 M280X		50400 Mtexels/sec
	Difference: 2208 (4%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 560 Ti is a better choice, by far. (explain)

GeForce GTX 560 Ti		26304 Mpixels/sec
Radeon R9 M280X		14400 Mpixels/sec
	Difference: 11904 (83%)

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 maximum amount of data (measured in MB per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the card's interface width by its memory speed. If the card has DDR memory, it must be multiplied by 2 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 AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs 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 lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.