Question WD SN850 NVMe SSD | getting 1700 read/write on PCIe 3.0

Dec 5, 2022
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I was wondering, since i already saw a thread similar to this one talking about SN850 doing 1700 read/write on PCIe 3.0, if i change my mobo that has PCIe 4.0 slot, would it make any difference?
 

Lutfij

Titan
Moderator
Welcome to the forums, newcomer!

Please list the specs to your build like so:
CPU:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:
OS:
Monitor:

As for your motherboard, what BIOS version are you currently on and which slot are you populating on your motherboard(if you have multiple slots to work with)? If the M.2 slot you have the SN850 in is only rated for PCIe 3.0 speeds, then yes an M.2 slot(or a board with a slot) with PCIe 4.0 will be of benefit.
 
Dec 5, 2022
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I have this pc built
CPU: i3-10100F
Motherboard: Gigabyte H410M S2H - BIOS version "American Megatrends Inc. F3, 23/11/2021
Ram: 16 GB DDR4
SSD/HDD: SN850 1TB and 860 QVO 1TB
GPU: GTX 1050 Ti
PSU: Aerocool 550w
Chassis: Aerocool Streak
OS: Windows 11 pro 22H2
Monitor: MSI optix g242
If you know some cheap/budget mobo LGA1200 with PCIe 4.0 m2 slot, let me know
 
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Lutfij

Titan
Moderator
Looking at the SSD in your initial post, here I thought you just picked the wrong motherboard. You're going to need to change your processor as well to get PCIe 4.0 x4 speeds from your SSD, not just a motherboard purchase. You're just digging a hole in your wallet at this point to try and get PCIe 4.0x4 bandwidth. You should've asked before purchasing the SSD. If you went with a Samsung 970 Evo Plus or a Samsung 980(non pro) that would've been worthwhile.
 
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I was wondering, since i already saw a thread similar to this one talking about SN850 doing 1700 read/write on PCIe 3.0, if i change my mobo that has PCIe 4.0 slot, would it make any difference?
Your motherboard has PCIE 3.0 x2 M.2 slot. It has half bandwidth of a normal PCIE 3.0 x4 M.2 slot.
To achieve PCIE 4.0 x4 bandwidth you'll need a new motherboard and a new cpu.
 

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