GeForce GTX 550 Ti vs Radeon R9 M395X

Intro

Compare those specs to the Radeon R9 M395X, which has core speeds of 723 MHz on the GPU, and 1250 MHz on the 4096 MB of GDDR5 memory. It features 2048 SPUs along with 128 Texture Address Units and 32 Rasterization Operator 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

In theory, the Radeon R9 M395X should be 62% faster than the GeForce GTX 550 Ti in general, because of its higher data rate. (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 much (more or less 221%) faster with regards to AF 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

The Radeon R9 M395X should be a little bit (approximately 7%) faster with regards to AA than the GeForce GTX 550 Ti, and should be able to handle higher screen resolutions while still performing well. (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 maximum amount of data (counted in megabytes per second) that can be transferred across the external memory interface within a second. The number is worked out by multiplying the interface width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.