GeForce GTX 560 vs Radeon R9 M395X

Intro

Compare those specifications to the Radeon R9 M395X, which features a clock speed of 723 MHz and a GDDR5 memory frequency of 1250 MHz. It also makes use of a 256-bit bus, and uses a 28 nm design. It features 2048 SPUs, 128 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
GeForce GTX 560		150 Watts
	Difference: 25 Watts (20%)

Memory Bandwidth

In theory, the Radeon R9 M395X is 25% faster than the GeForce GTX 560 overall, because of its greater data rate. (explain)

Radeon R9 M395X		160000 MB/sec
GeForce GTX 560		128128 MB/sec
	Difference: 31872 (25%)

Texel Rate

The Radeon R9 M395X will be quite a bit (about 104%) better at AF than the GeForce GTX 560. (explain)

Radeon R9 M395X		92544 Mtexels/sec
GeForce GTX 560		45360 Mtexels/sec
	Difference: 47184 (104%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 560 is a better choice, though only just barely. (explain)

GeForce GTX 560		25920 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 2784 (12%)

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 MB per second) that can be moved over the external memory interface in one second. The number is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster 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 texture map elements (texels) that can be processed in one second. This figure is worked out 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 processed in one second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.