NVMe ssd using pcie gen. 3 x2

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vmnebnett

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Jan 4, 2018
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My samsung 960 evo 250 GB is only using pcie gen3 x2 instead of x4.

CPU: AMD ryzen 7 1700
MOBO: Asus prime x370-pro

 
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Barty1884

Barty1884

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Apr 16, 2015
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Looks like it should do x4 with a Ryzen chip installed.

https://www.asus.com/ca-en/Motherboards/PRIME-X370-PRO/specifications/

AMD Ryzen™ Processors :
1 x M.2 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 4 mode)
AMD 7th Generation A-series/Athlon™ Processors :
1 x M.2 Socket 3, with M key, type 2242/2260/2280/22110 storage devices support (SATA & PCIE 3.0 x 2 mode)
Click to expand...

What else do you have populated in your other PCIe slots? You may well have exhausted your lanes available through the other expansion slots. Given the modes are CPU dependent, they'll be direct CPU linked, and not via chipset.
 
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vmnebnett

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Jan 4, 2018
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I only got a graphics card installed
 
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vmnebnett

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Jan 4, 2018
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I haven't found any settings for the M.2 slot.
 
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