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Radeon R9 M290X vs Radeon R9 M395X

Intro

The Radeon R9 M290X comes with a GPU clock speed of 850 MHz, and the 4096 MB of GDDR5 RAM runs at 1200 MHz through a 256-bit bus. It also features 1280 SPUs, 80 TAUs, and 32 Raster Operation Units.

Compare all of that to the Radeon R9 M395X, which features a core clock frequency of 723 MHz and a GDDR5 memory speed of 1250 MHz. It also makes use of a 256-bit memory bus, and makes use of a 28 nm design. It features 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M290X 100 Watts
Radeon R9 M395X 125 Watts
Difference: 25 Watts (25%)

Memory Bandwidth

The Radeon R9 M395X should theoretically be a small bit faster than the Radeon R9 M290X in general. (explain)

Radeon R9 M395X 160000 MB/sec
Radeon R9 M290X 153600 MB/sec
Difference: 6400 (4%)

Texel Rate

The Radeon R9 M395X is quite a bit (about 36%) more effective at texture filtering than the Radeon R9 M290X. (explain)

Radeon R9 M395X 92544 Mtexels/sec
Radeon R9 M290X 68000 Mtexels/sec
Difference: 24544 (36%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 M290X is a better choice, though not by far. (explain)

Radeon R9 M290X 27200 Mpixels/sec
Radeon R9 M395X 23136 Mpixels/sec
Difference: 4064 (18%)

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 M290X

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 M290X Radeon R9 M395X
Manufacturer AMD AMD
Year May 1 2014 2015
Code Name Neptune XT Tonga
Memory 4096 MB 4096 MB
Core Speed 850 MHz 723 MHz
Memory Speed 4800 MHz 5000 MHz
Power (Max TDP) 100 watts 125 watts
Bandwidth 153600 MB/sec 160000 MB/sec
Texel Rate 68000 Mtexels/sec 92544 Mtexels/sec
Pixel Rate 27200 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 (Unknown) 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 (in units of MB per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out 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 also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

Radeon R9 M290X

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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