Hello everyone,

I've been looking everywhere to find out the generations of PCIe on my M.2 slots. From what I find there's conflicting info everywhere, even in the official ASUS page. Some places say one of the lanes is PCIe 4.0 and the other 3.0, while other sources say 2 x 4.0 while some sources also say it depends on your amd cpu gen, I have gen 3 so according to them they would both be PCIe 4.0.

Problem is I'm looking into buying a second m.2 nvme and I'm currently looking at a PCIe 4.0 one. But I just can't find for sure whether my mobo supports a second 4.0 M.2.

Does anyone here know?

Thanks everyone

Edit: this is what I find on ASUS page which I don't fully understand:

Storage AMD Ryzen™ 5000 Series/ 3000 Series Desktop Processors : AMD Ryzen™ 4000 G-Series/ 3000 G-Series/ 2000 Series/ 2000 G-Series Desktop Processors : 1 x M.2 Socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 4.0 x4 and SATA modes) storage devices support 1 x M.2 Socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 3.0 x4 and SATA modes) storage devices support AMD X570 chipset : 8 x SATA 6Gb/s port(s), Support Raid 0, 1, 10 1 x M.2 x4 Socket 3, with M Key, Type 2242/2260/2280/22110(PCIE 4.0 x4 and SATA modes) storage devices support

Hello All,

This is my build:

• CPU: AMD Ryzen 9 5900X (stock settings)

• CPU Cooler: ARCTIC Liquid Freezer II 280mm (front intake)

• GPU: GIGABYTE RTX 3080 Gaming OC 10G (stock settings)

• Mobo: ASUS ROG Strix X570-E Gaming WiFi II (Bios Ver. 4404)

• Monitor: ASUS ROG Strix XG279Q 27 inch @170Hz

• PSU: Corsair RMx Series RM1000x (Fully Modular) (2021 version)

• RAM: Corsair Vengeance LPX 32GB (16x2) 3600MHz (black)

• SSD 1: WD_BLACK SN850 1TB Gen 4 (M.2 NVMe)

• SSD 2: ADATA XPG SPECTRIX S40G RGB 1TB Gen 3 (M.2 NVMe)

• HDD 1: Seagate Barracuda 4TB 3.5-inch SATA

• HDD 2: Seagate Barracuda 2TB 3.5-inch SATA

• Casing: Lian Li LANCOOL II Mesh Performance (black)

• Case Fan 1: Noctua NF-F12 iPPC-2000 IP67 PWM 120mm (top exhaust)

• Case Fan 2: Noctua NF-F12 iPPC-2000 IP67 PWM 120mm (rear exhaust)

• Mouse: Glorious Model O Minus Wireless

• Keyboard: Corsair K70 RGB MK.2 (brown switches)

• Mousemat: Steelseries QcK Heavy (large)

• Headset: Razer BlackShark V2 Pro

• OS: Windows 10 Pro 64-bit (v22H2)

I have the WD SN850 connected in the top m.2 slot & the XPG Spectrix S40G in the bottom m.2 slot. It is advertised on the ASUS product page for my mobo that both m.2 slots are Gen 4.0. Will connecting a Gen 4.0 NVME in the bottom m.2 give me the same performance as in the top m.2 slot ?

Screenshot from the ASUS product page for my mobo

Screenshot from the ASUS tech specs section for my mobo

In the middle of my current build and am having trouble determining which of the two m2 slots on this mobo is the pcie gen 4 slot. I have an nvme 4.0 drive and want to make sure I am taking advantage of it. I checked all the documentation and manual and it doesnt seem to specifiy which is which. Can anyone help?

On Premiumbuilds the XXX is listed as having 2x PCIe 4.0 M.2 slots. I'd like to purchase 2 SSDs for the slots, but I dont really know what this means. On PCparpicker, the PCIe and M2 drives are separate - do I buy a PCIe SSD, or M2? And if I get M2, what do the numbers after M2 mean ( 22110/22802242/2260)?

I am assuming that is their size, 22mm across, and the rest is length. Does this matter with this Motherboard?

Thanks in advance. Sorry - this is the second time I've ever built a PC.