GeForce GTX 550 Ti vs Radeon R9 M395X

Intro

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

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

Theoretically speaking, the Radeon R9 M395X is 62% faster than the GeForce GTX 550 Ti overall, due to its higher bandwidth. (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 (approximately 221%) faster with regards to anisotropic 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

The Radeon R9 M395X is a small bit (approximately 7%) more effective at FSAA than the GeForce GTX 550 Ti, and will be capable of handling 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 largest amount of information (counted in MB per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses 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, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The number 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 output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.