Notebookcheck
, , , , , ,
search relation.
, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,
 

PSA | Xiaomi issues BIOS fix for slow SSD performance in the Mi Notebook Pro

The Xiaomi Mi Notebook Pro.
The Xiaomi Mi Notebook Pro.
The Xiaomi Mi Notebook Pro suffered from less than ideal disk read and write speeds despite having a Samsung PM961 SSD onboard. A BIOS update is now available that enables full x4 bandwidth on the NVMe SSD PCIe lanes, leading to increased read/write speeds.
, , , , , ,
search relation.
, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,
 

The Xiaomi Notebook Pro garnered a good review from us for its performance, battery life, and affordability. We also featured the notebook as one of our 10 best multimedia laptops to buy for the holidays. One of the most pertinent complaints with respect to the Mi Notebook Pro was the slow SSD speeds posted by the Samsung PM961 SSD. In our review of the Mi Notebook Pro, we found the read and write speeds of the SSD to be disappointing and definitely not of the PM961 class. Back then, Xiaomi seemed to have intentionally limited the SSD speeds to PCIe x2 instead of allowing the full PCIe x4 bandwidth leading to a lot of frustration among buyers. Now, the company seems to have heeded to the complaints and has released a BIOS fix to enable full PCIe x4 bandwidth on the NVMe SSD. 

The BIOS fix was posted by a user on Xiaomi's Chinese bulletin board and it seems to have fixed the SSD speed issue with multiple users reporting positive results. After flashing the firmware, the SSD scores have seen an increase from 1.8 GBps read/1.2 GBps write to 3.2 GBps read/1.5 GBps write — inline with what is expected from the PM961.

The issue originally affected Mi Notebook Pro users running 0200 version of the BIOS. Newer Mi Notebooks will come factory installed with the 0401 version that already includes the above enhancements. Users on Xiaomi's bulletin board report that flashing the 0300 BIOS will reset the Intel Management Engine to its old version, thereby, affecting fingerprint logon in the process (the Trusted Platform Module 2 is integrated into the Intel ME rather than being a dedicated chip in the Mi Notebook). However, it is possible to get the Intel ME reconfigured post flashing the BIOS to 0300.

In case you own a Mi Notebook Pro with 0200 firmware, be sure to read the source link first for detailed instructions, especially the comment section, before attempting to flash the new BIOS. As always, flashing the BIOS carries a little risk and it helps to have data backed up and a full battery (or AC power) before attempting it.

SSD speeds on BIOS version 0200. (Source: Techtablets)
SSD speeds on BIOS version 0200. (Source: Techtablets)
SSD speeds after flashing the BIOS to version 0300. (Source: Techtablets)
SSD speeds after flashing the BIOS to version 0300. (Source: Techtablets)

Source(s)

Read all 1 comments / answer
static version load dynamic
Loading Comments
Comment on this article
, , , , , ,
search relation.
, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,
 
Vaidyanathan Subramaniam
Vaidyanathan Subramaniam - Managing Editor - 1357 articles published on Notebookcheck since 2012
Though a cell and molecular biologist by training, I have been drawn towards computers from a very young age ever since I got my first PC in 1998. My passion for technology grew quite exponentially with the times, and it has been an incredible experience from being a much solicited source for tech advice and troubleshooting among family and friends to joining Notebookcheck in 2017 as a professional tech journalist. Now, I am a Lead Editor at Notebookcheck covering news and reviews encompassing a wide gamut of the technology landscape for Indian and global audiences. When I am not hunting for the next big story or taking complex measurements for reviews, you can find me unwinding to a nice read, listening to some soulful music, or trying out a new game.
contact me via: @Geeky_Vaidy
Please share our article, every link counts!
> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2017 12 > Xiaomi issues BIOS fix for slow SSD performance in the Mi Notebook Pro
Vaidyanathan Subramaniam, 2017-12- 6 (Update: 2017-12- 6)