GeForce GTX 550 Ti vs Radeon R9 M380

Intro

Compare those specifications to the Radeon R9 M380, which has a clock speed of 1000 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 128-bit bus, and makes use of a 28 nm design. It is made up of 640 SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the GeForce GTX 550 Ti should be a bit faster than the Radeon R9 M380 in general. (explain)

GeForce GTX 550 Ti		98496 MB/sec
Radeon R9 M380		96000 MB/sec
	Difference: 2496 (3%)

Texel Rate

The Radeon R9 M380 is much (approximately 39%) more effective at anisotropic filtering than the GeForce GTX 550 Ti. (explain)

Radeon R9 M380		40000 Mtexels/sec
GeForce GTX 550 Ti		28800 Mtexels/sec
	Difference: 11200 (39%)

Pixel Rate

The GeForce GTX 550 Ti should be much (about 35%) better at anti-aliasing than the Radeon R9 M380, and also able to handle higher resolutions while still performing well. (explain)

GeForce GTX 550 Ti		21600 Mpixels/sec
Radeon R9 M380		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: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.