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Radeon R9 M270X vs Radeon RX 550

Intro

The Radeon R9 M270X comes with a core clock speed of 725 MHz and a GDDR5 memory frequency of 1125 MHz. It also makes use of a 128-bit memory bus, and makes use of a 28 nm design. It features 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Compare that to the Radeon RX 550, which comes with 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 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon RX 550 should in theory be a lot better than the Radeon R9 M270X in general. (explain)

Radeon RX 550 114688 MB/sec
Radeon R9 M270X 72000 MB/sec
Difference: 42688 (59%)

Texel Rate

The Radeon RX 550 should be a lot (about 21%) more effective at texture filtering than the Radeon R9 M270X. (explain)

Radeon RX 550 35200 Mtexels/sec
Radeon R9 M270X 29000 Mtexels/sec
Difference: 6200 (21%)

Pixel Rate

The Radeon RX 550 should be much (about 52%) better at AA than the Radeon R9 M270X, and also should be able to handle higher resolutions without losing too much performance. (explain)

Radeon RX 550 17600 Mpixels/sec
Radeon R9 M270X 11600 Mpixels/sec
Difference: 6000 (52%)

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

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Radeon R9 M270X

Amazon.com

Check prices at:

Radeon RX 550

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model Radeon R9 M270X Radeon RX 550
Manufacturer AMD AMD
Year May 1 2014 April 2017
Code Name Venus XT Polaris 12
Memory 2048 MB 2048 MB
Core Speed 725 MHz 1100 MHz
Memory Speed 4500 MHz 7000 MHz
Power (Max TDP) (Unknown) watts 50 watts
Bandwidth 72000 MB/sec 114688 MB/sec
Texel Rate 29000 Mtexels/sec 35200 Mtexels/sec
Pixel Rate 11600 Mpixels/sec 17600 Mpixels/sec
Unified Shaders 640 512
Texture Mapping Units 40 32
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 14 nm
Transistors (Unknown) million 2200 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.2 DirectX 12.0
OpenGL Version OpenGL 4.3 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total amount of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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Radeon R9 M270X

Amazon.com

Check prices at:

Radeon RX 550

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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