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Radeon R9 270 vs Radeon R9 M395X

Intro

The Radeon R9 270 makes use of a 28 nm design. AMD has set the core speed at 900 MHz. The GDDR5 memory works at a speed of 1400 MHz on this model. It features 1280 SPUs as well as 80 Texture Address Units and 32 ROPs.

Compare those specs to the Radeon R9 M395X, which has GPU clock speed of 723 MHz, and 4096 MB of GDDR5 memory set to run at 1250 MHz through a 256-bit bus. It also is made up of 2048 SPUs, 128 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M395X 125 Watts
Radeon R9 270 150 Watts
Difference: 25 Watts (20%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 270 is 12% quicker than the Radeon R9 M395X overall, because of its greater data rate. (explain)

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

Texel Rate

The Radeon R9 M395X is much (approximately 29%) more effective at texture filtering than the Radeon R9 270. (explain)

Radeon R9 M395X 92544 Mtexels/sec
Radeon R9 270 72000 Mtexels/sec
Difference: 20544 (29%)

Pixel Rate

The Radeon R9 270 should be a lot (about 24%) more effective at AA than the Radeon R9 M395X, and also able to handle higher resolutions while still performing well. (explain)

Radeon R9 270 28800 Mpixels/sec
Radeon R9 M395X 23136 Mpixels/sec
Difference: 5664 (24%)

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 270

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 270 Radeon R9 M395X
Manufacturer AMD AMD
Year November 2013 2015
Code Name Curacao Pro Tonga
Memory 2048 MB 4096 MB
Core Speed 900 MHz 723 MHz
Memory Speed 5600 MHz 5000 MHz
Power (Max TDP) 150 watts 125 watts
Bandwidth 179200 MB/sec 160000 MB/sec
Texel Rate 72000 Mtexels/sec 92544 Mtexels/sec
Pixel Rate 28800 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 largest amount of information (counted in MB per second) that can be moved past the external memory interface in a second. The number is calculated by multiplying the bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better 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 amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

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

Display Prices

Hide Prices

Radeon R9 270

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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