Ryzen 4000 laptop slow nvme speeds on battery

Hardware
1

hey all. so i have a ryzen 4000 laptop. (eluktronics THINN-15) i have a wd sn750 1tb NVME drive and while the laptop is plugged in i get full SSD read and write speeds. 3400 read 3000 write but when i run on battery, ssd speeds only hit 1800 read/write max

also noticed that network speeds are effected in the same way but only when i use a VPN (PIA) without VPN no issues but with vpn enabled i only get 80mbps down speed max on battery but plugged in i get 400mbps

i have a feeling that this has something to do with some sort of PCI power savings. i looked for and disabled all power saving settings that i can but no changes.

i did some googleing and saw a few posts on reddit with people with ryzen laptops having the same issue with the SSD speeds.

when i use HWinfo64 it shows the nvme drive link speed while on battery only at 5.0 GT/s vs 8.0 GT/s

how can i go about disabling this while under battery so i can have full drive speeds as well as hopfully network speeds while using my VPN

thanks

1839×857 195 KB

2

Guessing you’ve already gone into Edit Power Plan → Change advanced power settings → PCI Expres → Link State Power Management and turned it off?

3

Yup first thing I did and no change :frowning:

I’m hoping this is not an bios level issue and that I’m stuck with this

4

Check on Linux live USB to quickly see is it bios or is it system problem.

5

It could be power states on the NVMe drive instead of the PCIe bus speed.

One of my Samsung 970s reports this from smartctl in Linux:

Supported Power States
St Op     Max   Active     Idle   RL RT WL WT  Ent_Lat  Ex_Lat
 0 +     6.20W       -        -    0  0  0  0        0       0
 1 +     4.30W       -        -    1  1  1  1        0       0
 2 +     2.10W       -        -    2  2  2  2        0       0
 3 -   0.0400W       -        -    3  3  3  3      210    1200
 4 -   0.0050W       -        -    4  4  4  4     2000    8000

You can see States 0, 1 and 2 exist and have lower and lower power usage. Then 3 and 4 are basically standby states.

6

even if it is the power states of the drive, something is telling the drive to use that power state while in battery mode but not when plugged in.

i thought i disabled all drive and os power saving features while on battery and still is an issue. (same with the network speeds while using a vpn)

7

This topic was automatically closed 273 days after the last reply. New replies are no longer allowed.