[SOLVED] PCIE Lane bottleneck?

[wint_17]

Hi,

Just want to ask your expert opinion regarding my concern below.

Full Specs:

• Ryzen 3 3300X OC'ed to 4.3ghz @ 1.275v
• Asrock B450M Steel Legend
• Sapphire Nitro+ 6600XT 8GB (Driver version 12.12.1)
• 2x8gb Patriot Viper Steel 2666mhz
• WD SN550 500GB M.2 NVME
• Samsung 860 EVO 500GB M.2 SATA
• Seasonic M12II EVO 620W 80+ Bronze
• Windows 11 Pro Version 10.0.22000 Build 22000

So I have an Asrock B450M Steel Legend and currently, I have two M.2 SSDs, see below:
-> One is a WD SN550 500GB M.2 NVME which is currently installed in M2_1 slot.
-> The other is a Samsung 860 EVO 500GB M.2 SATA which is currently installed in M2_2 slot.

Now I have another PCI expansion card (ASUS PCE-AX3000) installed in PCIE1.

Having said the above Setup, here is my concern.
Since I installed the M.2 NVME, I'm experiencing microstutters on some of my games.
My question is, am I bottlenecking my GPU with my current setup?

Did I already used up all the PCIE lanes which restricts my GPU?
Should I remove the ASUS PCE-AX3000 expansion card?

Hoping for your suggestions, thanks!

 

[hotaru.hino]

The slot where the graphics card is installed is unaffected, as the Ryzen 3 3300X has enough lanes to support a 16 lane slot, an NVMe SSD (4 lanes), and the chipset (another 4 lanes)

The other M.2 slot is connected to the chipset.

 

[wint_17]

It seems you are correct, microstutters were not caused by devices that uses the lanes.
I just reverted back my GPU drivers to the latest recommended WHQL (21.10.2) and the stutters were gone.

Thank you.