Radeon R9 390X 8G vs Radeon RX 550

Intro

Compare all that to the Radeon RX 550, which uses a 14 nm design. AMD has set the core speed at 1100 MHz. The GDDR5 RAM is set to run at a frequency of 1750 MHz on this particular card. It features 512 SPUs along with 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R9 390X 8G		13555 points
Radeon RX 550		3507 points
	Difference: 10048 (287%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550		50 Watts
Radeon R9 390X 8G		275 Watts
	Difference: 225 Watts (450%)

Memory Bandwidth

The Radeon R9 390X 8G should in theory perform quite a bit faster than the Radeon RX 550 in general. (explain)

Radeon R9 390X 8G		384000 MB/sec
Radeon RX 550		114688 MB/sec
	Difference: 269312 (235%)

Texel Rate

The Radeon R9 390X 8G should be quite a bit (more or less 425%) faster with regards to anisotropic filtering than the Radeon RX 550. (explain)

Radeon R9 390X 8G		184800 Mtexels/sec
Radeon RX 550		35200 Mtexels/sec
	Difference: 149600 (425%)

Pixel Rate

The Radeon R9 390X 8G is a lot (approximately 282%) faster with regards to full screen anti-aliasing than the Radeon RX 550, and also will be capable of handling higher screen resolutions better. (explain)

Radeon R9 390X 8G		67200 Mpixels/sec
Radeon RX 550		17600 Mpixels/sec
	Difference: 49600 (282%)

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 max amount of data (in units of MB per second) that can be moved 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 memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.