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Samsung 840 EVO SSD low benchmark

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  • Desktops
  • Samsung SSD
  • ASrock
  • Intel i5
  • Samsung
  • Evo
  • Benchmark
  • SATA
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Last response: in Storage
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September 21, 2014 9:39:16 AM

I just finished my first build this week. I am booting off of a Samsung 840 Evo 250GB SSD. With this SSD comes the Samsung Magician software. In Magician, I have set the OS optimization settings to "Maximum Performance". Also, Magician confirms that I am in AHCI mode and that my SATA interface is SATA III 6 Gb/s. Also, I've checked my BIOS settings and the drive is set to AHCI mode.

The problem is, the results from the magician benchmark test are terrible.

Sequential Read: 310 Mb/s
Sequential Write: 377 Mb/s
Random Read: 60976 IOPS
Random Write: 53687 IOPS

I have searched the Internet to the best of my ability, but I can't figure out what the problem is. I've even tried switching SATA cables and SATA mobo ports. Any help at all would be very much appreciated. It sucks when you spend all this money on a computer, and it doesn't work like you expect.

Other Computer Info:

Mobo: Askrock z97 Extreme 4
OS: Windows 8.1
RAM: 8GB Gskill Ripjaws
CPU: Intel i5 4690k

More about : samsung 840 evo ssd low benchmark

Best solution

a b V Motherboard
September 21, 2014 9:48:51 AM

click44 said:
I just finished my first build this week. I am booting off of a Samsung 840 Evo 250GB SSD. With this SSD comes the Samsung Magician software. In Magician, I have set the OS optimization settings to "Maximum Performance". Also, Magician confirms that I am in AHCI mode and that my SATA interface is SATA III 6 Gb/s. Also, I've checked my BIOS settings and the drive is set to AHCI mode.

The problem is, the results from the magician benchmark test are terrible.

Sequential Read: 310 Mb/s
Sequential Write: 377 Mb/s
Random Read: 60976 IOPS
Random Write: 53687 IOPS

I have searched the Internet to the best of my ability, but I can't figure out what the problem is. I've even tried switching SATA cables and SATA mobo ports. Any help at all would be very much appreciated. It sucks when you spend all this money on a computer, and it doesn't work like you expect.

Other Computer Info:

Mobo: Askrock z97 Extreme 4
OS: Windows 8.1
RAM: 8GB Gskill Ripjaws
CPU: Intel i5 4690k


Are you plugged into a native SATA port or a third party port?

The Intel ports will perform much better than any third party port.

Also is this a new drive or have you used it on a previous system?
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September 21, 2014 10:04:00 AM

techgeek said:
click44 said:
I just finished my first build this week. I am booting off of a Samsung 840 Evo 250GB SSD. With this SSD comes the Samsung Magician software. In Magician, I have set the OS optimization settings to "Maximum Performance". Also, Magician confirms that I am in AHCI mode and that my SATA interface is SATA III 6 Gb/s. Also, I've checked my BIOS settings and the drive is set to AHCI mode.

The problem is, the results from the magician benchmark test are terrible.

Sequential Read: 310 Mb/s
Sequential Write: 377 Mb/s
Random Read: 60976 IOPS
Random Write: 53687 IOPS

I have searched the Internet to the best of my ability, but I can't figure out what the problem is. I've even tried switching SATA cables and SATA mobo ports. Any help at all would be very much appreciated. It sucks when you spend all this money on a computer, and it doesn't work like you expect.

Other Computer Info:

Mobo: Askrock z97 Extreme 4
OS: Windows 8.1
RAM: 8GB Gskill Ripjaws
CPU: Intel i5 4690k


Are you plugged into a native SATA port or a third party port?

The Intel ports will perform much better than any third party port.

Also is this a new drive or have you used it on a previous system?


Oh, man. Now I'm embarrassed. I saw that solution in a different thread, so I checked my Asrock manual. The manual makes no distinction between the SATA ports. Also, there was no indication on the Mobo itself that the ports were different. So, I figured they were all intel ports.

After your reply, I decided to research further, and of course 3 threads in, I found out the only two ports I've tried with this SSD are the only 3rd party ports on the board. So now I have it plugged into the proper port and my benchmarks are much higher.

Thanks for your help.
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a b V Motherboard
September 21, 2014 10:07:28 AM

No problem, glad I could help.

What amazes me is you got it to boot with the third party controller. Most times when the boot drive is put on a third party controller it won't boot Windows.
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September 30, 2014 10:33:27 AM

Hi
I had the same problem. I have an EVO 840 250g ssd. I have 2 sata controllers, Marvell and Intell matrix. I have been told (here) that I should put my 3 storage hard drives on one and my SSD boot drive on the other. It boots fast either way. There is another problem though. When I go to a site such as Neatorama or Craigslist my browser slows and freezes for as much as several minutes. There are other slowdowns in other areas also. This started after about a month in use. Check this link-
http://www.overclock.net/t/1507897/samsung-840-evo-read...
There is a lot more available if you search. Samsung has recently admitted that this is a problem and will issue new firmware on August 15. They feel that this will fix it. You can get it through your Magician software on that date.
I bought a Crucial 550 SSD as a replacement since I have to have my PC working to earn a living.
Hope this helps

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a b Ô Samsung
September 30, 2014 10:53:22 AM

kahoona said:
Hi
I had the same problem. I have an EVO 850 250g ssd. I have 2 sata controllers, Marvell and Intell matrix. I have been told (here) that I should put my 3 storage hard drives on one and my SSD boot drive on the other. It boots fast either way. There is another problem though. When I go to a site such as Neatorama or Craigslist my browser slows and freezes for as much as several minutes. There are other slowdowns in other areas also. This started after about a month in use. Check this link-
http://www.overclock.net/t/1507897/samsung-840-evo-read...
There is a lot more available if you search. Samsung has recently admitted that this is a problem and will issue new firmware on August 15. They feel that this will fix it. You can get it through your Magician software on that date.
I bought a Crucial 550 SSD as a replacement since I have to have my PC working to earn a living.
Hope this helps



Your thing has nothing to do with this post. He was plugged into the Secondary controller, upon plugging into the primary Intel controller, he got the speeds he was wanting.
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