GeForce GTX 550 Ti vs Radeon R9 M385X

Intro

Compare all that to the Radeon R9 M385X, which comes with a clock frequency of 1100 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 128-bit bus, and uses a 28 nm design. It is made up of 896 SPUs, 56 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the GeForce GTX 550 Ti should be just a bit faster than the Radeon R9 M385X in general. (explain)

GeForce GTX 550 Ti		98496 MB/sec
Radeon R9 M385X		96000 MB/sec
	Difference: 2496 (3%)

Texel Rate

The Radeon R9 M385X will be a lot (more or less 114%) better at texture filtering than the GeForce GTX 550 Ti. (explain)

Radeon R9 M385X		61600 Mtexels/sec
GeForce GTX 550 Ti		28800 Mtexels/sec
	Difference: 32800 (114%)

Pixel Rate

The GeForce GTX 550 Ti will be quite a bit (approximately 23%) more effective at FSAA than the Radeon R9 M385X, and should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 550 Ti		21600 Mpixels/sec
Radeon R9 M385X		17600 Mpixels/sec
	Difference: 4000 (23%)

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 data (counted in megabytes per second) that can be transported past the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 texture map elements (texels) that are applied per second. This is worked out by multiplying the total number of texture units by the core clock 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.