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SSD Slow Speed

post #1 of 23
Thread Starter 
I've the 120GB Samsung 840 Series SSD with latest firmware (DXT09B0Q) and 1TB Seagate Barracuda 7200RPM HDD however the SSD write speed seems to be slower than the HDD which isn't normal?

Both drives is connected to SATA 3 6Gb/s port on my Gigabyte Z77 D3H motherboard.

post #2 of 23
The Samsung 840 series was/is plagued with speed issues. Samsung finally fixed most of the 840 EVO after a year or more. But, I believe the straight 840 is still unfixed.

Try running your system with Samsung Magician running and see if that helps. Probably not though.
post #3 of 23
Performance is normal for a 120GB 840: http://www.anandtech.com/show/6337/samsung-ssd-840-250gb-review/5
The degradation only affects old data, and these benchmarks write new data so you wont see the problem.
Test the drive with HD Tune Pro, and preferably both in the default settings and then changing the benchmark options to "full test" and 8MB "block size".
Then post screenshots of the results here (File > Save Screenshot in HD Tune)
post #4 of 23
Thread Starter 
Quote:
Originally Posted by ED209;28722259 
give HD Tune a try, change the block size from 64kb to 8mb under file, options and benchmark

post back your results
This is Read with 8MB block size,



However, I can't seem to run Write,

post #5 of 23

The only thing that 840 Series owners can do is refresh their data manually. The absolute best way to do this is by running MyDefrag, particularly the "Data Disk Monthly" script.

 

MyDefrag is EOL, but just look for MyDefrag 4.3.1 and download it from a site that you like. For example, http://www.majorgeeks.com/files/details/mydefrag.html

 

Don't get it from CNET.

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CPUMotherboardGraphicsRAM
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It's a computer!
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250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
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Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
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post #6 of 23
No official fix exists for the 840
See if you can return it to the place you bought it to replace it with another model.
Or contact Samsung about it.

More info here:
http://www.techspot.com/article/997-samsung-ssd-read-performance-degradation/
http://www.overclock.net/t/1519058/the-we-want-our-840-non-evo-ssd-fixed-also

P.S: You don't want to run the write test, that would erase all data on the drive, hence the warning!

Or if they refuse the return just keep running a program like recommended by TwoCables every few months.
post #7 of 23
Thread Starter 
Quote:
Originally Posted by Per Hansson View Post

No official fix exists for the 840
See if you can return it to the place you bought it to replace it with another model.
Or contact Samsung about it.

More info here:
http://www.techspot.com/article/997-samsung-ssd-read-performance-degradation/
http://www.overclock.net/t/1519058/the-we-want-our-840-non-evo-ssd-fixed-also

P.S: You don't want to run the write test, that would erase all data on the drive, hence the warning!

Or if they refuse the return just keep running a program like recommended by TwoCables every few months.
I bought the SSD 2-3 years ago, would it be a good upgrade to the 850 EVO? If so does the problem still exists?
post #8 of 23
The problem was fixed in a firmware update for the 840 EVO
And never existed in the 850 EVO.
Yes the 850 EVO would be a good upgrade.
But your SSD should come with a three year warranty so I would check that path first.
Seems kind of wrong to give more money to Samsung for a failure on their part?
post #9 of 23

Before Samsung fixed the 840 EVO, I used MyDefrag as recommended, and I was left a bit speechless by the result. According to SSD Read Speed Tester made by OCN's very own Techie007, here's what I got before using MyDefrag back on March 15th:

 

2015-03-15%2002.47.11%20Results%20for%20C.png?raw=1

 

Look at the bottom: "Average data read speed: 39 MB/s". I admit that I never really felt this slowness, but initially I ran Samsung's software they released initially called "Samsung SSD 840 EVO Performance Restoration" and then SSD Read Speed Tester showed me 517 MB/s. Not bad, right? Don't be so sure: a month later I learned about using MyDefrag, and then SSD Read Speed Tester gave me 542 MB/s! It has been that way ever since.

 

Proof of 517 MB/s and 542 MB/s:

 

https://www.dropbox.com/s/f0t9y348hdg6m94/2015-03-15%2010.10.56%20Results%20for%20C.png?raw=1

 

https://www.dropbox.com/s/fc0zgdkmf5x53yw/2015-04-15%2023.51.36%20Results%20for%20C.png?raw=1

 

Don't get me wrong, I didn't feel a difference between 517 and 542, but then how would anyone feel a difference? I definitely noticed it when going from 39 to 517 though. Holy crap. What I'm really saying here though is that MyDefrag actually restored my drive's performance ALL the way back up instead of just most of the way like that Samsung software did. This is why I'm recommending MyDefrag.


Edited by TwoCables - 10/24/15 at 8:00am
It's a computer!
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CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
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Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
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It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #10 of 23

Oh god wait.... I quickly forgot that you're talking about the write speed. Sigh. I'm sorry.

 

The read speed was what slowed down, not the write speed. So, I don't know what to say. Why did you run that benchmark? I mean, have you been experiencing slow write speeds and decided to check it?

It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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It's a computer!
(18 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (OS) 3 TB Toshiba P300 (storage) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate Basic, but premium round 
AudioAudio
X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
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