Question Asus TUF X570-Plus using two M.2 slot with Nvme 1tb each. Same speed or not.

Jan 17, 2021
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I have a Asus TUF X570-Plus Motherboard
There are two M.2 slots. One next to the CPU and the other next to the chipset with a cover on
I plan to use identical 1TB Nvme in both of those slots. This is not a RAID setup.
I read from various forums that they will both work at its full speed while others stated the M.2 (bottom) closer to the chipset is half the speed. Don't know why but that defeats the purpose of the M.2's.
Other option is to use the extra PCIEx16_2 and get a PCIE adapter card for the M.2. The first PCIEx16_1 is the GPU.
Question is: Is there a speed difference with the adapter compared to the second M.2 slot at half the speed if so stated. I can't find any info about how legit if both runs at full speed which should be faster than the PCIEx
I am using one M.2 for OS and applications and the second M.2 for raw files and 4K video.
What are you suggestions on this setup. Thanks
 
Last edited:

USAFRet

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Mar 16, 2013
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As always, ask the manufacturer.

What CPU do you have?
Assuming a 3rd Gen Ryzen, both ports are PCIe 4.0 capable.
1 from the CPU, and 1 from the chipset.

--------------------------
3rd Gen AMD Ryzen™ Processors :
1 x M.2 Socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 4.0 x4 and SATA modes) storage devices support
2nd Gen AMD Ryzen™/3rd, 2nd and 1st Gen AMD Ryzen™ with Radeon™ Graphics Processors :
1 x M.2 Socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 3.0 x4 and SATA modes) storage devices support
AMD X570 chipset :
1 x M.2 Socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 4.0 x4 and SATA modes) storage devices support
--------------------------

If you have a 2nd Gen Ryzen, one of the M.2 ports will be PCIe 3.0.

What specific drives are you looking at?
 

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