Question SK hynix Platinum P41 2TB SSD Write speed dropped by half

Super Spartan · Feb 12, 2023

Only about 4TB written to the SSD so far, when I first got it, the performance was:

Now, the write has dropped by about half:

the only difference which I think was different is I was on Windows 11 21H1 when I benchmarked it the first time and now I am on the latest 22H2. The read speeds are the same. What gives?

PS: I even tried using the Samsung NVMe modded drive but that didn't change the write speeds.
Antivirus is disabled while taking the test

Laptop specs are in my signature

Pink Jazz · Jun 22, 2024

I have been using mine for 6 months and still getting full read and write speeds. I don't use BitLocker, so I suspect BitLocker may have something to do with it.

Super Spartan · Jun 25, 2024

Pink Jazz said:
I have been using mine for 6 months and still getting full read and write speeds. I don't use BitLocker, so I suspect BitLocker may have something to do with it.

no, I never ever used BitLocker and never will.

MKKKAO · Jul 1, 2024

far77 said:
I ran into a similar problem with my work laptop, it's a Dell Precision 5470. The NVMe inside is an SK Hynix PC801, which I think is the OEM version of the P41. Initially, the read/write speeds were amazing, hovering around 6000-7000. But a while back, I noticed the write speed had dropped to about 2000-2500, though the read speed was still above 6500. The funny thing is, I found this out purely by accident. I wanted to run CrystalDiskMark on an external drive but ended up running it on the NVMe by mistake! Honestly, I probably wouldn't have noticed otherwise. There were no error messages or warnings, and everything else about the daily work on the laptop seemed normal.

I started looking around for any information on what could be wrong and found this forum, among other places, but didn't find any answers. And since it’s a work computer, RMA'ing it was off the table —not to mention how silly it would sound asking our IT department to look into it just because the NVMe drive doesn't perform well in benchmark!

But then things took a turn yesterday. I was using BitLocker on an external drive and saw a message saying, “Device encryption is temporarily suspended. Encryption will resume automatically the next time you restart this device.” Trying to fix this issue (of course restart did nothing), I ended up turning off the device encryption altogether. Then it hit me—could encryption be messing with the write speed? So, I ran CrystalDiskMark again and, bingo! the write speed was back to normal, over 6000.

Now, I’m left with a new puzzle: I can’t re-enable device encryption. Still, I wanted to share this in case it helps anyone out thereMY .

MY SSD is PC801 with same write 2500m/s issue, I try to disable the bitlocker after watching your post , but unfortunately problem still, so I think the problem is nothing about bitlocker, for your case should just a coincidence , there should be some logic that FW will prevent SSD to use Catch, im very struggle cus I just bought a P41, and it is still under delivery, I think I better to cancel the order right now.

igor_kavinski · Jul 1, 2024

MKKKAO said:
I think I better to cancel the order right now.

Yes and get something decent like WD or Crucial or even Corsair. Kingston is also fine as far as I know.

Ridiculous_Death · Aug 19, 2024

I have two P41 2TB and both have this issue. What a piece of crap
, should've got the WD

igor_kavinski · Aug 19, 2024

Looks like some crappy employees who got fired from Samsung joined SK Hynix...

fastandfurious6 · Aug 26, 2024

I think mine is absolutely cooked????? what's going on????

igor_kavinski · Aug 26, 2024

fastandfurious6 said:
I think mine is absolutely cooked????? what's going on????

At least your reads are good. That's what applications/games do most of the time.

Hail The Brain Slug · Aug 26, 2024

I can't believe they still don't have a fixed firmware for this. SSDs seem like they're becoming abandonware.

Shmee · Aug 26, 2024

If the drive is under warranty, reach out to SK Hynix and they should give you a refund for a return.

fastandfurious6 · Aug 27, 2024

random read/writes at Q32 T16 are also 10 times less than normal......

at least is latency/ μs normal?

basically is all that impacting Real World performance in any way? seq writes only happen once in a blue moon anyway

Hail The Brain Slug · Oct 5, 2024

I think there might be something to the bitlocker thing. I disabled bitlocker (and let it decrypt the entire drive) and my performance appears to be back to normal - no format or secure erase involved.

Granted, I didn't have the 2500MB/s speeds. Mine were kind of floating around 3000-5000MB/s instead of the normal 6500+

Possibly two unrelated issues.

lopri · Oct 16, 2024

What a shame. I was about to order a couple of Hynix SSDs. Glad to have found this thread. I guess I will wait.

fastandfurious6 · 2024-11-26T23:28:56-0500

fastandfurious6 said:
I think mine is absolutely cooked????? what's going on????

View attachment 106229

View attachment 106230

yep mine got literally cooked!!!!
basically the drive dies quickly after operating for 1-2 minutes and pc needs total reboot to retry
can't pinpoint what exactly makes the drive to die, any pointers? for science

loading OS in drive:
loads OS but in 1-2 minutes 'computer capabilities' increasingly freeze:
1. the program doesnt load / window doesnt scroll / refuses to do things
2. mouse is still moving
3. can click on other things
4. in the next 10-20 seconds increasingly unable to click on other things,
5. mouse stops moving for 5 seconds

6. BSOD: CRITICAL_PROCESS_DIED

loading OS from different drive:

1. reads data normally, until it doesnt
2. example movie file: can skip forward for 3-6 times, until it doesnt work anymore
3. drive "dies" and becomes unrecognized by OS
4. reboot revives the drive until it dies again

basically cloned the entire broken SKhynix drive to a new drive and OS and everything loads normally now

igor_kavinski · 2024-11-27T06:56:06-0500

fastandfurious6 said:
basically the drive dies quickly after operating for 1-2 minutes and pc needs total reboot to retry
can't pinpoint what exactly makes the drive to die, any pointers? for science

Leave the drive in a spare slot for a day and don't try to access it. Its firmware may be trying to recover from some internal corruption or whatever.

However, if it doesn't work after 24 hours of being left alone powered up, time to RMA the piece of crap if it's still under warranty.

fastandfurious6 · 2024-11-27T08:41:21-0500

igor_kavinski said:
Leave the drive in a spare slot for a day and don't try to access it. Its firmware may be trying to recover from some internal corruption or whatever.

However, if it doesn't work after 24 hours of being left alone powered up, time to RMA the piece of crap if it's still under warranty.

ebay purchase... listed as new but no purchase receipt

any way to get direct RMA without receipt?

do firmwares really do that? some kind of self recovery on their own? basically it started 4 days ago and it was becoming increasingly worse every day, i.e. 1st day 2 bsods, 2nd day 4 bsods, 3rd day bsod in 2 minutes etc

did a lot of troubleshooting but basically cloning the whole drive into a new drive removed the issue completely, the ssd got cooked

igor_kavinski · 2024-11-27T08:59:47-0500

fastandfurious6 said:
do firmwares really do that? some kind of self recovery on their own?

I only have one experience of that (a Sandforce controller based Corsair F60 SSD that fixed itself after several hours of just being connected to running PC. Previously, it would hang within 5 minutes).

Question SK hynix Platinum P41 2TB SSD Write speed dropped by half

Super Spartan

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Pink Jazz

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Super Spartan

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MKKKAO

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igor_kavinski

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Ridiculous_Death

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igor_kavinski

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fastandfurious6

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igor_kavinski

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Hail The Brain Slug

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Shmee

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fastandfurious6

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Hail The Brain Slug

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lopri

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fastandfurious6

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igor_kavinski

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fastandfurious6

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igor_kavinski

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