NVMe pci lanes

[invision2212]

i have a new system build using a Ryzen 5600x and a Asrock pro 4 B550 motherboard. ive only used SATA SSD's and im sure ill be fine but i want to make sure of it before it gets assembled.

i have 2 NVMe SSD's they are both generation 3, one is a WD SN750 1tb the other is a WD SN550 1tb. will i be able to use both of these drives along with the GPU at full speed?

[r.linder]

If both slots support Gen3 when both are populated, then yes

Usually, one slot has PCI-e lanes from the CPU and the other gets it from the chipset

[GOD RAYS ON ULTRA™]

Yes, that's exactly what I'm doing. Two gen 3 nvme drives running at gen 3 x4 and my gpu is gtx1070 and running gen 3 x16.

[invision2212]

ah okay good to know thanks to both of you

[Supafly]

Originally posted by invision2212:

ah okay good to know thanks to both of you

One may not work at x4 speeds, x2 or even x1, if something is connected to specific Sata ports. It could be that the board doesn't share any sata ports, not all do, so it won't be an issue. Just incase it does check the manual or look in the Bios. If you have other available sata ports you can just switch sata connections round so they are not in the ports being affecting the Nvme speeds.

[Overseer]

A quick look into the manual says

M2_1
the Hyper M.2 Socket supports M Key type 2260/2280/22110 M.2 PCI Express module up to Gen4x4 (64 Gb/s) (with Matisse) or Gen3x4 (32 Gb/s) (with Renoir)

M2_3
M.2 Socket supports type 2242/2260/2280 M.2 SATA3 6.0 Gb/s module and M.2 PCI Express module up to Gen3 x2 (16 Gb/s).
* M2_3 and SATA3_5_6 share lanes. If either one of them is in use, the other one will be disabled.

So the answer seems to be no.

[Supafly]

So the M2_3 will only run at x2 not x4 and you won't be able to connect any Sata drives to Sata 5 and Sata 6 ports while using an M.2 in that location. I'd put the M.2 your going to use the most in the M2_1 port as and the drive you'll be using less in the M2_3 port.

Unless you're encoding videos and things you likely won't notice a difference without running benchmarks anyway

[invision2212]

the only thing this pc will be used for is gaming, browising, and youtube.

also the only SSD's in the system will be the M.2's

[Bad 💀 Motha]

SSDs do not impact your GPU's PCIE Lanes, please stop thinking this.
GPU lanes come from the installed CPU.
NVME lanes come from the Motherboard Chipset.

To be honest, if all you doing is gaming, basic work stuff and browsing, multi-media, then you really don't NEED any NVME SSDs, at the very least one is enough. The rest, even if using M2 could just be slower SATA speed M2 model SSDs, they'll still be super fast for such a user.

NVME SSDs are more for content creators and video editors. Or folks who record tons of high quality videos and need a super fast dedicated drive for that.

[Magma Dragoon]

Why not get a motherboard that has two M.2 sockets that support NVMe using x4 lanes?

[invision2212]

Originally posted by Magma Dragoon:

Why not get a motherboard that has two M.2 sockets that support NVMe using x4 lanes?

because i got this board on sale for 80.00 and it does all the things i need it to do.

at any rate i installed both SSD's and 2nd drive runs at 1600mb/sec instead of 2400 so its good enough and boots games on both drives lightning fast

[Lord Flashheart]

Check the motherboard manual.
I suspect a bigger issue could be that some sata ports are disabled if the an nvme drive is installed.