Radeon R9 M280X vs Radeon RX 550

Intro

Compare those specs to the Radeon RX 550, which comes with a core clock frequency of 1100 MHz and a GDDR5 memory speed of 1750 MHz. It also uses a 128-bit bus, and makes use of a 14 nm design. It is comprised of 512 SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550		50 Watts
Radeon R9 M280X		75 Watts
	Difference: 25 Watts (50%)

Memory Bandwidth

As far as performance goes, the Radeon RX 550 should in theory be quite a bit better than the Radeon R9 M280X overall. (explain)

Radeon RX 550		114688 MB/sec
Radeon R9 M280X		88000 MB/sec
	Difference: 26688 (30%)

Texel Rate

The Radeon R9 M280X will be much (about 43%) better at AF than the Radeon RX 550. (explain)

Radeon R9 M280X		50400 Mtexels/sec
Radeon RX 550		35200 Mtexels/sec
	Difference: 15200 (43%)

Pixel Rate

The Radeon RX 550 will be a lot (approximately 22%) better at FSAA than the Radeon R9 M280X, and able to handle higher resolutions without slowing down too much. (explain)

Radeon RX 550		17600 Mpixels/sec
Radeon R9 M280X		14400 Mpixels/sec
	Difference: 3200 (22%)

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 largest amount of data (in units of megabytes per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units by the core 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 in one second.

Pixel Rate: Pixel rate is the maximum amount 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 number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.