Hi, i recently bought WD_BLACK SN850 1TB Gen4 ssd for my acer nitro 5 AN515-54-R7Z1 laptop. It shows that I have Gen4 nvme slots but SSD is using Gen3 (x8 bus interface). I have doubt that it is using CPU bus interface instead of GPU bus interface. My SSD was supposed to give 7000mbps speed but now it is stuck at 3700mbps only. Gpu bus interface showing (PCIe x16
[email protected] x8 3.0). What to do so ssd can work at it's full potential ?
(Thread was edited to add model name to the title)
FAQ & Answers
thanks for responding.
1) GPUz is still same (PCIe x16 4.0 @ x8 3.0) without SN850 installed too
2) Main boot drive is kingston 256gb PCIe ssd which came preinstalled with this device.
@JackE
Just as an example, my AN515-56 (which is a newer laptop) has the OEM M.2 WD SN530 that its WD specs are at Sequential Read Performance 2400MB/s, is the same as yours at Bus Specs. PCIe 4.0 (16.0 GT/s) and its GPUz Bus Interface PCIe x16 4.0 @ x4 4.0 as they are both the same as the Nitro 5's cant utilise the WD's 7000MB/s speed.
I already tried using WD SSD in port of factory installed SSD. I mean I already both port for WD but it is still the same. In Both Ports WD is reading Gen 3. I am attaching Screenshot of BIOS Information section. I am hiding Some Serial number digits since I don't know if sharing Here with serial number showing is fine or not.
Please let me know if you need any more information Sir.
Edited the content to hide sensitive information.
I tried WD SSD in both available NVME slots but it is still the same. My boot drive giving same 2314 Mbps in both slots and WD is giving 3700 Mbps in both slots.
Thank you and have a nice day!
Your CPU can support up to Gen 3 speeds only, so I don't think you will get the full speed of Gen 4 SSD.
https://www.amd.com/en/products/apu/amd-ryzen-5-5600h