Motherboard ROG Strix b450-i

[Cretin]

Hi all, just purchased myself a Rog Strix b450-i and am hoping to use the m.2 for a nvme drive. My knowledge here is fairly limited- hence my question.

Will using the m2 slot reduce my pci-e capabilities (i.e cripple my 1070) due to lack of lanes or the suchlike?

Sorry for the stupid.


Thanks,

Mat

 

[rfarmer]

Hi all, just purchased myself a Rog Strix b450-i and am hoping to use the m.2 for a nvme drive. My knowledge here is fairly limited- hence my question.

Will using the m2 slot reduce my pci-e capabilities (i.e cripple my 1070) due to lack of lanes or the suchlike?

Sorry for the stupid.


Thanks,

Mat

This is taken from Asus product page, "The M.2_2 slot shares with PCIE x16. When M.2_2 slot runs in PCIE mode, the PCIE x16 slot will run at x8 mode."

This is only noted for the M.2_2 not the M.2_1 which will run either SATA or NVMe.

Ryzen has PCIe 3.0 x4 just for the M.2, I think it will only take from the GPU if you have more than one.

 

[tinyitx]

When the PCIE x16 slot is reduced from x16 to x8 due to the M.2_2 running in PCIE mode, an 1070 will not be affected in performance, at least in gaming. Even an 1080 will not suffer as well. But a 2080Ti will (for about 2-3% only).
So, no need to worry.

PCIE scaling for GTX 1080:-
https://www.techpowerup.com/reviews/NVIDIA/GeForce_GTX_1080_PCI_Express_Scaling/24.html

PCIE scaling for RTX 2080Ti:-
https://www.techpowerup.com/reviews/NVIDIA/GeForce_RTX_2080_Ti_PCI-Express_Scaling/6.html