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GeForce GTX 560 Ti 448 vs Radeon R9 M395X

Intro

The GeForce GTX 560 Ti 448 comes with a GPU clock speed of 732 MHz, and the 1280 MB of GDDR5 memory is set to run at 900 MHz through a 320-bit bus. It also is made up of 448 Stream Processors, 56 Texture Address Units, and 40 ROPs.

Compare those specifications to the Radeon R9 M395X, which features core speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 RAM. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X		125 Watts
GeForce GTX 560 Ti 448		210 Watts
	Difference: 85 Watts (68%)

Memory Bandwidth

Performance-wise, the Radeon R9 M395X should theoretically be a little bit superior to the GeForce GTX 560 Ti 448 overall. (explain)

Radeon R9 M395X		160000 MB/sec
GeForce GTX 560 Ti 448		144000 MB/sec
	Difference: 16000 (11%)

Texel Rate

The Radeon R9 M395X is quite a bit (more or less 126%) more effective at anisotropic filtering than the GeForce GTX 560 Ti 448. (explain)

Radeon R9 M395X		92544 Mtexels/sec
GeForce GTX 560 Ti 448		40992 Mtexels/sec
	Difference: 51552 (126%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 560 Ti 448 is a better choice, and very much so. (explain)

GeForce GTX 560 Ti 448		29280 Mpixels/sec
Radeon R9 M395X		23136 Mpixels/sec
	Difference: 6144 (27%)

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

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GeForce GTX 560 Ti 448

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Radeon R9 M395X

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Specifications

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Model	GeForce GTX 560 Ti 448	Radeon R9 M395X
Manufacturer	nVidia	AMD
Year	December 2011	2015
Code Name	GF110	Tonga
Memory	1280 MB	4096 MB
Core Speed	732 MHz	723 MHz
Memory Speed	3600 MHz	5000 MHz
Power (Max TDP)	210 watts	125 watts
Bandwidth	144000 MB/sec	160000 MB/sec
Texel Rate	40992 Mtexels/sec	92544 Mtexels/sec
Pixel Rate	29280 Mpixels/sec	23136 Mpixels/sec
Unified Shaders	448	2048
Texture Mapping Units	56	128
Render Output Units	40	32
Bus Type	GDDR5	GDDR5
Bus Width	320-bit	256-bit
Fab Process	40 nm	28 nm
Transistors	3000 million	(Unknown) million
Bus	PCIe 2.0 x16	PCIe 3.0 x16
DirectX Version	DirectX 11	DirectX 12
OpenGL Version	OpenGL 4.2	OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the interface width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 applied in one second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The better the texel rate, 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 maximum amount of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

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