Samsung SSD could be running faster?

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zeusvii

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Jun 26, 2009
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Hey,

Just built a new SSD boot drive, and I think I'm missing something - I think I'm running at about half speed, and I can't figure out why. Am I missing something? Do these speeds look typical for a SSD? Why does UserBenchmark.com show significant under performance of this drive compared to the same drive on other users configurations?

If you can see this speed Benchmark report (confirmed 3 independent times):
http://www.userbenchmark.com/UserRun/772156

My SSD benchmarked speeds:
Sequential (average - 271 mb/s)
Random 4k (Average - 27 mb/s)
Deep Queue 4k (Average - 33 mb/s)

Other relevant details confirmed:
* Updated latest Gigabyte Sata 3 controllers / drivers
* Latest BIOS is flashed and operating
* SSD is indeed hooked up to a 6 gb/s SATA 3 port (my mobo has SATA 3 and SATA 2)
* Confirmed through Device manager that SSD was indeed hooked up to a 6gb/s port, and it checked out.


Build Info:

Boot Drive in Question: Samsung 850 EVO 250gb (6 gb/s)
Slave: Velociraptor 10k RPM (3gb/s) (old Boot drive)

AMD Phenom II 1090T
Gigabyte Mobo, GA-890FXA-UD5 - (Latest BIOS F6)
Ram: Rip Jaw 1866 2 x 2gb, Rip Jaw 1600 2 x 4gb
MSI R9 390x 8gb GPU
CPU Cooling: CoolIt ECO A.L.C.
PSU: ThermalTake Toughpower XT 875W
 
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zeusvii

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Jun 26, 2009
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Yeah, definitely missed this. BIOS shows I'm still in IDE mode. Ugh. Now I have to figure out how to change back to AHCI without re-installing everything.

Can you confirm that I won't be messing everything up if I move forward with the Reg Edit (outlined below).


Tried this method already - as anticipated, I'm on AMD so I guess I'm not quite sure if I need to do this PLUS a reg edit, or just a reg edit?

Ill just quote from another forum a method that's guaranteed to work.
1. Run Command Prompt as Admin
2. Invoke a Safe Mode boot with the command: bcdedit /set {current} safeboot minimal
3. Restart the PC and enter your BIOS during bootup.
4. Change from IDE to AHCI mode then Save & Exit.
5. Windows 10 will launch in Safe Mode.
6. Right click the Window icon and select to run the Command Prompt in Admin mode from among the various options.
7. Cancel Safe Mode booting with the command: bcdedit /deletevalue {current} safeboot
8. Restart your PC once more and this time it will boot up normally but with AHCI mode activated.
9. Bask in the reflected glory of being a total Windows 10 God
NOTE: THIS MOSTLY WORKS ONLY ON INTEL CPU'S. With AMd you also have to edit some regedit.

Here's what I found on windows 10 Reg Edit methods:

Yes there is a way on WIN 10 also ! Go into BIOS set the SATA mode to IDE and boot into system.
Start REGEDIT and look for this line :
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\storahci\StartOverride
Change the 0 DWORD value from 3 to 0.
Reboot, and change your SATA controller to AHCI in BIOS. Now let it boot into safe mode, WIN 10 will install required drivers for AHCI.
Now with a normal boot you will boot into Windows with AHCI drivers.
Note : OEMs suggest reinstalling rather than changing, especially with an SSD.
You stand the chance of loosing your install if something goes wrong, and different systems may behave differently.
Not Recommended for Windows 7.
 
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zeusvii

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Jun 26, 2009
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Activated AHCI, though doing the BIOS conversion from IDE to AHCI without reinstalling the SSD wasn't quite as straight forward as the above directions imply, but they do work, and I've got it stable again.

New benchmarks definitely show a sizable increase in performance. Sequential performance above 300 mb/s definitely confirms that SATA III is working appropriately.

Based on the below Benchmark report, it still suggests that I am hitting well below average performance for this SSD compared to real results obtained by other users. (Samsung EVO 850 drive, the other drives I don't care about / seem to be fine, though I wouldn't mind tuning up the SATA II drive if possible from 100 mb/s to more than that).

http://www.userbenchmark.com/UserRun/772899

Sequential:
Old: 271 mb/s
New: 411 mb/s

Random 4k:
Old: 27 mb/s New: 34 mb/s

Deep Queue 4k:
Old: 33 mb/s New: 67 mb/s

 
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iXeon

iXeon

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Jul 6, 2015
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well different software's will have different benchmarks try to test it with crystal disk mark that only focus on the disk speed test and some thing else is to install the latest version of Samsung Magician that would tell you all the problems that cause the limit of the speed and the remained life time of your ssd based on the P/E you have

you can download the crystal disk mark here:
http://crystalmark.info/software/CrystalDiskMark/index-e.html
 
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