GeForce GTX 870M vs Radeon RX 550

Intro

Compare those specifications to the Radeon RX 550, which has a GPU core clock speed of 1100 MHz, and 2048 MB of GDDR5 memory set to run at 1750 MHz through a 128-bit bus. It also features 512 SPUs, 32 Texture Address Units, and 16 ROPs.

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

GeForce GTX 870M		4770 points
Radeon RX 550		3507 points
	Difference: 1263 (36%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 550		50 Watts
GeForce GTX 870M		110 Watts
	Difference: 60 Watts (120%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 550 should be a small bit faster than the GeForce GTX 870M in general. (explain)

Radeon RX 550		114688 MB/sec
GeForce GTX 870M		96000 MB/sec
	Difference: 18688 (19%)

Texel Rate

The GeForce GTX 870M is quite a bit (more or less 199%) faster with regards to AF than the Radeon RX 550. (explain)

GeForce GTX 870M		105392 Mtexels/sec
Radeon RX 550		35200 Mtexels/sec
	Difference: 70192 (199%)

Pixel Rate

The GeForce GTX 870M is a lot (about 28%) faster with regards to AA than the Radeon RX 550, and also able to handle higher screen resolutions better. (explain)

GeForce GTX 870M		22584 Mpixels/sec
Radeon RX 550		17600 Mpixels/sec
	Difference: 4984 (28%)

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 information (measured in MB per second) that can be moved across the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, 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 number of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the 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 graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.