GeForce GTX 550 Ti vs Radeon R9 M395X

Intro

Compare all of that to the Radeon R9 M395X, which has GPU core speed of 723 MHz, and 4096 MB of GDDR5 memory set to run at 1250 MHz through a 256-bit bus. It also is comprised of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 550 Ti		116 Watts
Radeon R9 M395X		125 Watts
	Difference: 9 Watts (8%)

Memory Bandwidth

As far as performance goes, the Radeon R9 M395X should in theory be quite a bit superior to the GeForce GTX 550 Ti overall. (explain)

Radeon R9 M395X		160000 MB/sec
GeForce GTX 550 Ti		98496 MB/sec
	Difference: 61504 (62%)

Texel Rate

The Radeon R9 M395X should be a lot (more or less 221%) faster with regards to texture filtering than the GeForce GTX 550 Ti. (explain)

Radeon R9 M395X		92544 Mtexels/sec
GeForce GTX 550 Ti		28800 Mtexels/sec
	Difference: 63744 (221%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 M395X is a better choice, but it probably won't make a huge difference. (explain)

Radeon R9 M395X		23136 Mpixels/sec
GeForce GTX 550 Ti		21600 Mpixels/sec
	Difference: 1536 (7%)

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 max amount of data (in units of MB per second) that can be transferred past the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the 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 are processed in one second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.