[SOLVED] Which NVMe for which slot?

[Rozzdog]

Hi all, I have my OS on a 1TB NVMe drive and have recently purchased a 2nd 2TB NVMe for games. I want to take advantage of the new direct storage API when it becomes available and wondered how best to arrange the drives. Will moving the OS to the 2nd slot reduce my computer's operating speed, or conversely, will the 2nd slot reduce the potential of direct storage performance if installed the other way? Will it make no difference at all? Information on this seems scarce. My board is an Asus Z390-P. Many thanks!

 

[rgd1101]

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1 x M.2 Socket 3, with M key, type 2242/2260/2280 storage devices support (SATA & PCIE 3.0 x 4 mode)*1
1 x M.2 Socket 3, with M Key, type 2242/2260/2280 storage devices support (SATA & PCIE 3.0 x 2 mode)

 

[Rozzdog]

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ASUS Prime motherboards are expertly engineered to unleash the full potential of AMD and Intel processors. Boasting a robust power design, comprehensive cooling solutions and intelligent tuning options, these ASUS motherboards provide daily users and DIY PC builders a range of performance tuning...

www.asus.com

1 x M.2 Socket 3, with M key, type 2242/2260/2280 storage devices support (SATA & PCIE 3.0 x 4 mode)*1
1 x M.2 Socket 3, with M Key, type 2242/2260/2280 storage devices support (SATA & PCIE 3.0 x 2 mode)

Forgive me, what I guess I'm asking is what are the real world performance differences with 3.0 x2 with the OS, or if installed the other way, will it affect performance potential of direct storage, or is there no discernable difference? Thanks.

 

[geofelt]

Real world performance of either device in either slot for random I/O will not differ.
That is what windows does mostly.

X2 or x4 may well be germane for sequential operations.
But, I think that will only show up on sustained sequential tasks such as a virus scan.

 

[Rozzdog]

Real world performance of either device in either slot for random I/O will not differ.
That is what windows does mostly.

X2 or x4 may well be germane for sequential operations.
But, I think that will only show up on sustained sequential tasks such as a virus scan.

Great, so I'll just put the new drive straight into the spare slot and crack on then. Thanks so much.