Why is my M.2 Gen 4 SSD running at low speeds?
Asked by
GamerGuy42
I recently bought an ADATA Premium M.2 Gen 4 SSD for my PS5, paying about 93 CAD (68 USD) for it. The SSD shows 99% health and works fine, but its speed is only around 25% of what's advertised. I've checked the drive's health with Crystal Disk Info and HD Tune, and I haven't found any errors. My motherboard is an AORUS X470 Ultra Gaming, and I think I'm using the M2B socket, which has different specifications; I found it supports PCIe 2.0. I'm curious if the M2B socket is indeed the reason for the slower speeds, and can someone clarify what generation it actually is?
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Yep, if your SSD is PCIe 4.0 and it's in a slot that only supports PCIe 2.0, you're definitely bottlenecked. PCIe 2.0 offers about 25% of the speed of PCIe 4.0. You should really check if you can switch it to the third slot, which might give you a nice speed boost as it's likely PCIe 3.0.
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That totally makes sense! Having a PCIe 4 drive in a PCIe 2 slot means you’re losing a lot of potential speed. Just moving it to a PCIe 3 slot should definitely help, but keep in mind, it won't hit the full capabilities of the Gen 4 drive.
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