GeForce GTX 560 Ti vs Radeon R9 M390X

Intro

Compare that to the Radeon R9 M390X, which uses a 28 nm design. AMD has set the core frequency at 723 MHz. The GDDR5 RAM is set to run at a frequency of 1250 MHz on this specific card. It features 2048 SPUs along with 128 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M390X		125 Watts
GeForce GTX 560 Ti		170 Watts
	Difference: 45 Watts (36%)

Memory Bandwidth

As far as performance goes, the Radeon R9 M390X should in theory be much superior to the GeForce GTX 560 Ti overall. (explain)

Radeon R9 M390X		160000 MB/sec
GeForce GTX 560 Ti		128256 MB/sec
	Difference: 31744 (25%)

Texel Rate

The Radeon R9 M390X should be a lot (about 76%) more effective at texture filtering than the GeForce GTX 560 Ti. (explain)

Radeon R9 M390X		92544 Mtexels/sec
GeForce GTX 560 Ti		52608 Mtexels/sec
	Difference: 39936 (76%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GTX 560 Ti is superior to the Radeon R9 M390X, but it probably won't make a huge difference. (explain)

GeForce GTX 560 Ti		26304 Mpixels/sec
Radeon R9 M390X		23136 Mpixels/sec
	Difference: 3168 (14%)

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 (in units of megabytes per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's 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 number is calculated by multiplying the total amount of 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 in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.