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Radeon R9 M290X vs Radeon R9 M395X

Intro

The Radeon R9 M290X makes use of a 28 nm design. AMD has clocked the core speed at 850 MHz. The GDDR5 memory runs at a frequency of 1200 MHz on this particular card. It features 1280 SPUs along with 80 TAUs and 32 ROPs.

Compare those specifications to the Radeon R9 M395X, which comes with GPU core speed of 723 MHz, and 4096 MB of GDDR5 memory running at 1250 MHz through a 256-bit bus. It also is made up of 2048 SPUs, 128 Texture Address Units, and 32 ROPs.

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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

As far as performance goes, the Radeon R9 M395X should in theory be a little bit better 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 should be a lot (approximately 36%) better 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

The Radeon R9 M290X will be a little bit (approximately 18%) more effective at anti-aliasing than the Radeon R9 M395X, and will be capable of handling higher resolutions more effectively. (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

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Radeon R9 M395X

Amazon.com

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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 max amount of information (counted in megabytes per second) that can be transported across the external memory interface in a second. It is calculated by multiplying the bus width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the 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 can be processed in one second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max 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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