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Radeon R9 270X vs Radeon R9 M395X

Intro

The Radeon R9 270X uses a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 RAM runs at a frequency of 1400 MHz on this model. It features 1280 SPUs along with 80 TAUs and 32 Rasterization Operator Units.

Compare those specs to the Radeon R9 M395X, which uses a 28 nm design. AMD has set the core speed at 723 MHz. The GDDR5 memory runs at a frequency of 1250 MHz on this particular card. It features 2048 SPUs as well as 128 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X 125 Watts
Radeon R9 270X 180 Watts
Difference: 55 Watts (44%)

Memory Bandwidth

Theoretically, the Radeon R9 270X should perform a bit faster than the Radeon R9 M395X overall. (explain)

Radeon R9 270X 179200 MB/sec
Radeon R9 M395X 160000 MB/sec
Difference: 19200 (12%)

Texel Rate

The Radeon R9 M395X should be just a bit (more or less 16%) better at texture filtering than the Radeon R9 270X. (explain)

Radeon R9 M395X 92544 Mtexels/sec
Radeon R9 270X 80000 Mtexels/sec
Difference: 12544 (16%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 270X is a better choice, and very much so. (explain)

Radeon R9 270X 32000 Mpixels/sec
Radeon R9 M395X 23136 Mpixels/sec
Difference: 8864 (38%)

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 270X

Amazon.com

Check prices at:

Radeon R9 M395X

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 270X Radeon R9 M395X
Manufacturer AMD AMD
Year October 2013 2015
Code Name Curacao XT Tonga
Memory 2048 MB 4096 MB
Core Speed 1000 MHz 723 MHz
Memory Speed 5600 MHz 5000 MHz
Power (Max TDP) 180 watts 125 watts
Bandwidth 179200 MB/sec 160000 MB/sec
Texel Rate 80000 Mtexels/sec 92544 Mtexels/sec
Pixel Rate 32000 Mpixels/sec 23136 Mpixels/sec
Unified Shaders 1280 2048
Texture Mapping Units 80 128
Render Output Units 32 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 28 nm 28 nm
Transistors 2800 million (Unknown) million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.2 DirectX 12
OpenGL Version OpenGL 4.3 OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be transferred over the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 processed per second. This number is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines 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 is also dependant on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

Radeon R9 270X

Amazon.com

Check prices at:

Radeon R9 M395X

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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