Samsung PM951 M.2 SSD performance issues

[manpower]

Samsung PM951 256GB, correct?
Did you follow the guide in post #1?

Dear RehabMan,

I seriously follow page 1, I did create SSDT-NVMe-Pcc.aml put into ACPI/Patched, also entry for _DSM->XDSM into config.plist,
then I delete and make sure there is no any patch-nvme inside the config.plist! I generate HackrNVMeFamily_10.12.3.kext use --spoof option then install into EFI/Clover/kexts/Other

Now I writing the post successfully boot into my hack on NVMe Samsung M2, but still same poor performance
I attached here again my EFI/Clover zip could you please help take a look into it again? Thanks in advance !

if anything missing please let me know

 

[RehabMan]

Dear RehabMan,

I seriously follow page 1, I did create SSDT-NVMe-Pcc.aml put into ACPI/Patched, also entry for _DSM->XDSM into config.plist,
then I delete and make sure there is no any patch-nvme inside the config.plist! I generate HackrNVMeFamily_10.12.3.kext use --spoof option then install into EFI/Clover/kexts/Other

Now I writing the post successfully boot into my hack on NVMe Samsung M2, but still same poor performance
I attached here again my EFI/Clover zip could you please help take a look into it again? Thanks in advance !

if anything missing please let me know

Performance issues not related to this guide. You should open a separate thread.

 

[ovb1]

I can manage to run my M2 on new System-10.12.3 also update the patched HackrNvme kext, but I really need help about the speed now is way too slow ! ! ! *attached my EFI folder here if anyone please can help me out !

That's about right for the PM models they are significantly slower than the SM models - http://www.overclock.net/t/1612145/samsung-sm951-vs-pm951

 

[denis.fr]

your mobo is ?

Dear RehabMan,

I seriously follow page 1, I did create SSDT-NVMe-Pcc.aml put into ACPI/Patched, also entry for _DSM->XDSM into config.plist,
then I delete and make sure there is no any patch-nvme inside the config.plist! I generate HackrNVMeFamily_10.12.3.kext use --spoof option then install into EFI/Clover/kexts/Other

Now I writing the post successfully boot into my hack on NVMe Samsung M2, but still same poor performance
I attached here again my EFI/Clover zip could you please help take a look into it again? Thanks in advance !

if anything missing please let me know

 

[manpower]

your mobo is ?

Board : Gigabite Z170X-Gaming 7 rev.1.0
M2 : Samsung MZFLV256HCHP-000MV

is it because not a sm950 or 951 pro. etc ?

 

[RehabMan]

Moved off-topic posts to separate thread.

 

[ovb1]

MZFLV256HCHP = PM951

Specs are here: https://www.scan.co.uk/products/256...nd-flash-read-1000mb-s-write-280mb-s-250k-74k


Read- 1000mbs and write- 280mbs

They are much slower than the SM951. Not that you'll really notice in everyday use as we're talking fractions of a second for most applications.

The SM961 with Polaris controllers is really fast and cheap from Scan.

https://www.scan.co.uk/products/256...)-ssd-polaris-read-2800mb-s-write-1100mb-s-25