GeForce GTX 550 Ti vs Radeon R9 M280X

Intro

Compare those specifications to the Radeon R9 M280X, which has a clock frequency of 900 MHz and a GDDR5 memory frequency of 1375 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It features 896 SPUs, 56 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M280X		75 Watts
GeForce GTX 550 Ti		116 Watts
	Difference: 41 Watts (55%)

Memory Bandwidth

Performance-wise, the GeForce GTX 550 Ti should theoretically be a bit better than the Radeon R9 M280X overall. (explain)

GeForce GTX 550 Ti		98496 MB/sec
Radeon R9 M280X		88000 MB/sec
	Difference: 10496 (12%)

Texel Rate

The Radeon R9 M280X will be much (more or less 75%) faster with regards to texture filtering than the GeForce GTX 550 Ti. (explain)

Radeon R9 M280X		50400 Mtexels/sec
GeForce GTX 550 Ti		28800 Mtexels/sec
	Difference: 21600 (75%)

Pixel Rate

The GeForce GTX 550 Ti will be much (approximately 50%) better at full screen anti-aliasing than the Radeon R9 M280X, and also able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 550 Ti		21600 Mpixels/sec
Radeon R9 M280X		14400 Mpixels/sec
	Difference: 7200 (50%)

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 (measured in MB per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen 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 higher this number, the better the 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 most pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.