NVME speed problem with 14s-fq0091ur

[Roman1981spb]

Hi again.

I did a lot of googling and found that there're lots of problems of this kind. And all of them without any answers. With acers, lenovos, hps and others. It must be something that manufacturers don't want to tell us. And it has absolutely nothing to do with power plan.

I tried to change my bios and ssd firmware - didn't work. I tried another new ssd (used new hp ex900 nvme in my wife's laptop) - the same problem. In my laptop - the same). So I think the problem is deeper than power plans or drivers. 

I wouldn't have bought this laptop if they (I mean hp) had told me about such things. On battery it works 4 times slower and it's obvious when opening various applications. And windows starts slower. So it doesn't make any sense to use nvme with this types of laptops because sata works on the same speed and even faster 🙂  

When on battery HW info shows:

Maximum Link Speed: 8.0 GT/s
Current Link Speed: 2.5 GT/s

otherwise:

Maximum Link Speed: 8.0 GT/s
Current Link Speed: 8.0 GT/s

If it is necessary and not forbidden here I can give you links where people face the same problems. 

I have 2 laptops (fq0091 and fq0100) and they behave the same. On battery nvme 4 times slower and it is insoluble problem :-((

[Huffer]

Not necessary. I think the budget CPUs are throttled more than the Intel Core and Ryzen because the budget processors lack power management and would burn through battery life very fast if not throttled back. 

[TzortzisG]

Hi Roman1981spb.

 Well, I have some good news, but I have some bad news as well.... The good news is that I can tell you the WHAT-HOW-&WHY about your systems throttling. The bad news is that I can't offer you a fix, at least not an easy one.

 So, what's up with your two laptops being slow? As I said in the final sentence of my previous post, if you try everything else and this symptom is still present, then unfortunately it means that HP (as many other laptop manufacturers often do nowadays) decided to enforce a BIOS limit when your systems run on battery. This is a hard limit, nothing to do with Windows, power plans, etc.

 How is this limit actually being implemented? Well, since laptop manufacturers started applying this throttle, reports appeared on many forums (including this one) that the BD PROCHOT switch is being flipped (when on battery). What is BD PROCHOT? You can read Unclewebb's explanation in this thread "BD PRO, why?".  What does BD PROCHOT actually do when it is enabled? Depends on the CPU. On Intels, you mostly notice the CPU dragging its feet, since it forces the processor to run constantly with its lowest "multiplier". Of course, the SSD is likewise made slower due to the CPU being unresponsive. On AMD cpus, the processor throttling isn't so dramatic, but the system is also definitely slower, and if you have a fast solid state pcie disk, you notice that the speeds are more of a SATA than a PCIe disk.

 Why are manufacturers doing this? Have they gone crazy? What is it "that manufacturers don't want to tell us"? Well, whenever computer companies try to pull off these cockamamie shenanigans, it always reminds me of a very old british film called "Beast in the Cellar". It's a horror movie with, obviously, a beast in the cellar that keeps escaping and murdering people (soldiers). But the truly horrific part is the end, where two elderly women keep repeating the phrase "We thought it was best for him, you see?". Well, this is exactly what's happening here. As Huffer EXPERT Level 18 explained, HP decided that it's best for you if the laptop throttles when on battery, so that you have more battery life, and also so that the Lithium cells are not stressed too much, leading to premature wearing out. I think, however, that the real reason HP (and the other laptop makers) started using these power limits is to make sure they don't get a tsunami of complaints like this one: https://h30434.www3.hp.com/t5/Notebook-Operating-System-and-Recovery/Noisy-fan-and-low-battery/m-p/8... where a user with an 8 core 5Ghz CPU on an unthrottled ENVY laptop asks why the battery discharges so fast........  😆

 What can you do to get rid of this "best for you" kind of situation? If this was a system with an Intel CPU, the solution would be so easy..... Just download Unclewebb's Throttlestop, run it and right on the Main screen is a BOX named BDprochot just waiting to be unchecked. However, Throttlestop only works on Intel CPUs and chipsets, and you have AMD. There is software for AMD CPUs like Throttlestop, it's called Ryzen Master and actually CAN disable BDprochot (and even PROCHOT), but it's only for Ryzen CPUs and only works on Desktops (no laptop support). You could try to use the MSRtools based programs for Linux or the equivalent fork for Windows. But I'm pretty sure that this won't work either, because 1) I doubt that AMD  CPUs use the same register (0x1FC) as Intels and 2) the MSR tools were basically made by and for Intel. So....... You're left with only one viable alternative: RWEverything (Read & Write Everything). This is a program that lets you read and write any kind of register on your system, even the embedded controllers. It's difficult to use, but if you DO find the register being used, you can easily create a shortcut on your desktop with the command "RW.exe /Min /Nologo /Stdout /Command=”WRMSR...etc....etc...." and just double-click it whenever on battery.  As I said, unfortunately there is no easy fix for your problem.