GeForce GTX 550 Ti vs Radeon R7 250X 2GB

Intro

Compare all of that to the Radeon R7 250X 2GB, which has a clock frequency of 1000 MHz and a GDDR5 memory frequency of 1125 MHz. It also uses a 128-bit bus, and makes use of a 28 nm design. It features 640 SPUs, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 250X 2GB		95 Watts
GeForce GTX 550 Ti		116 Watts
	Difference: 21 Watts (22%)

Memory Bandwidth

In theory, the GeForce GTX 550 Ti should be 37% faster than the Radeon R7 250X 2GB overall, because of its greater data rate. (explain)

GeForce GTX 550 Ti		98496 MB/sec
Radeon R7 250X 2GB		72000 MB/sec
	Difference: 26496 (37%)

Texel Rate

The Radeon R7 250X 2GB is a lot (about 39%) more effective at anisotropic filtering than the GeForce GTX 550 Ti. (explain)

Radeon R7 250X 2GB		40000 Mtexels/sec
GeForce GTX 550 Ti		28800 Mtexels/sec
	Difference: 11200 (39%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 550 Ti is superior to the Radeon R7 250X 2GB, by far. (explain)

GeForce GTX 550 Ti		21600 Mpixels/sec
Radeon R7 250X 2GB		16000 Mpixels/sec
	Difference: 5600 (35%)

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 MB per second) that can be moved past the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed in one second. This number is calculated by multiplying the total number of texture units by the core clock 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 processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the card's 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 is also dependant 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.