Radeon R9 M275X vs Radeon RX 550

Intro

Compare those specs to the Radeon RX 550, which features core speeds of 1100 MHz on the GPU, and 1750 MHz on the 2048 MB of GDDR5 RAM. It features 512 SPUs as well as 32 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The Radeon RX 550 should in theory perform a lot faster than the Radeon R9 M275X in general. (explain)

Radeon RX 550		114688 MB/sec
Radeon R9 M275X		72000 MB/sec
	Difference: 42688 (59%)

Texel Rate

The Radeon R9 M275X is a small bit (more or less 2%) more effective at AF than the Radeon RX 550. (explain)

Radeon R9 M275X		36000 Mtexels/sec
Radeon RX 550		35200 Mtexels/sec
	Difference: 800 (2%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon RX 550 is a better choice, by a large margin. (explain)

Radeon RX 550		17600 Mpixels/sec
Radeon R9 M275X		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 maximum amount of data (measured in megabytes per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher 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 in one second. This number is calculated by multiplying the total texture units by the core clock speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

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