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Radeon R9 M385X vs Radeon RX 460

Intro

The Radeon R9 M385X has a core clock speed of 1100 MHz and a GDDR5 memory speed of 1500 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It is comprised of 896 SPUs, 56 Texture Address Units, and 16 ROPs.

Compare those specifications to the Radeon RX 460, which comes with a core clock speed of 1090 MHz and a GDDR5 memory frequency of 1750 MHz. It also features a 128-bit bus, and uses a 14 nm design. It is made up of 896 SPUs, 56 Texture Address Units, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon RX 460 should be a bit faster than the Radeon R9 M385X overall. (explain)

Radeon RX 460 112000 MB/sec
Radeon R9 M385X 96000 MB/sec
Difference: 16000 (17%)

Texel Rate

The Radeon R9 M385X should be a bit (more or less 1%) more effective at anisotropic filtering than the Radeon RX 460. (explain)

Radeon R9 M385X 61600 Mtexels/sec
Radeon RX 460 61040 Mtexels/sec
Difference: 560 (1%)

Pixel Rate

The Radeon R9 M385X should be a bit (more or less 1%) better at full screen anti-aliasing than the Radeon RX 460, and should be capable of handling higher screen resolutions while still performing well. (explain)

Radeon R9 M385X 17600 Mpixels/sec
Radeon RX 460 17440 Mpixels/sec
Difference: 160 (1%)

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 M385X

Amazon.com

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Radeon RX 460

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 M385X Radeon RX 460
Manufacturer AMD AMD
Year 2015 August 2016
Code Name Bonaire Polaris 11
Memory 4096 MB 4096 MB
Core Speed 1100 MHz 1090 MHz
Memory Speed 6000 MHz 7000 MHz
Power (Max TDP) (Unknown) watts 75 watts
Bandwidth 96000 MB/sec 112000 MB/sec
Texel Rate 61600 Mtexels/sec 61040 Mtexels/sec
Pixel Rate 17600 Mpixels/sec 17440 Mpixels/sec
Unified Shaders 896 896
Texture Mapping Units 56 56
Render Output Units 16 16
Bus Type GDDR5 GDDR5
Bus Width 128-bit 128-bit
Fab Process 28 nm 14 nm
Transistors (Unknown) million 3000 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 12.0
OpenGL Version OpenGL 4.3 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in MB per second) that can be transferred over the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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Radeon R9 M385X

Amazon.com

Check prices at:

Radeon RX 460

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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