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Two Nvme Maximus X question

Moreluck
Level 7
Hey all
I have a Maximus X hero (Z370)
Currently using one 980 1tb nvme in the bottom slot, but I want to reinstall windows and have windows running on
its own little nvme for the top slot, thinking a 250gb 980, whilst all my games run on the 1tb on the bottom slot.

Will there be any conflict by having two nvme 980s running? I also have a 2080 Ti.
Concerned about number of PCIe lanes being used. Will there be enough for a second nvme ssd?

Everything I can find seems to suggest only the top will be sata and the bottom is the true nvme
Thanks!
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BillBittel
Level 12
You can set both slots to PCIE at the same time, and they can both use 4 PCIE lanes. Note that when M2_2 is set to PCIEx4 mode, SATA ports 5 and 6 are disabled (Owner's Manual page x). M2_1 is the slot that has 4 lanes direct to the CPU.

I have a Max X Hero Wifi with 2 NVME drives installed - a 980Pro in M2_2 slot (OS drive) and a 970Pro in M2_1 slot. Both are running at X4.