Unfortunately it will not solve the problem : write-cache buffer is already deactivated on my xps9360.
By the way I suggest you to also test latest IRST drivers from Intel (v184.108.40.2067), as they provide a little performance improvement over Dell's one and even better : they do reduce coil whine greatly when SSD is under stress with latest 2.4.2 BIOS 😉
I assumed it wouldn't solve it, just doing my due diligence 🙂
I'm running on 220.127.116.115 WIN10 with write-cache buffer set to off. I have maintained replication of the performance numbers, as we expected. Below is my latest test:
I will test out 18.104.22.1687 to see what happens.
Just got a 7577 with 256GB NVME and 1TB Hard Drive. Took out the hard drive and replaced it with my 1TB Samsung 840 evo SSD. The Samsung Magician software wasn't fully functional and saw that the bios was set to raid and not AHCI. Are there any long term performance or reliability reasons that I should switch over to AHCI from the raid? I'll just leave it as is if there shouldn't be any issues.
Hi Justin, I have news: please find below latest tests results
Config : XPS 13 9360 i5-8250u 8GB ram and with Toshiba XG5 256GB PCIE-Nvme
Bios mode : RAID
IRST Drivers : latest from Intel website : version 22.214.171.1247
First run after windows boot :
Second run 1 second after first one :
Third run 5 minutes after second run:
Thank you for your testing and feedback. I did more replication attempts yesterday as well and I've consistently re-produced the behavior, including on 126.96.36.1997. The drive is going to Dell engineering at this point.
My next step is to simply wait for engineering to get back with me on why this drive is performing this way. I will be back to delivered any results I obtain in the future. No ETA right now.
ho eseguito un aggiornamento completo di tutto il sistema operativo ma la situazione non è cambiata, anzi a tratti è peggiorata. Quando si fa click sull'icona della rete Wi-Fi Windows 10 va in Blue screen!!! Rivoglio i miei soldi!!!
Regarding the: 256GB Nvme Toshiba KXG50ZNV256G
Dell's engineering team has advised me that the drive's performance behavior is 'working as designed'. The behavior is due to a drive feature called the "SLC buffer". More on that in this wiki. In the case of Toshiba XG5 256GB, the SLC buffer size is maximized at 1/3 the full capacity of the SSD.