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Slow ssd benchmark troubleshoot

Tags:
  • Evo
  • Benchmark
  • Storage
  • Samsung SSD
  • SSD
  • Speed
Last response: in Storage
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October 2, 2014 2:17:41 AM

Hi there im using 840 evo 120gb and now experiencing a very slow speed

Normal benchmark : http://www.guru3d.com/articles-pages/samsung-840-evo-ss...

My as ssd benchmark is

Samsung ssd 840 EXT 0
amd_sata - OK
103424 K - OK

Read : 472MB/s
Write: 344 MB/s
Score: 601

Is it due to my wrong drivers or something?

More about : slow ssd benchmark troubleshoot

a b G Storage
October 2, 2014 2:22:04 AM

If thats the 840 Evo, it is a known prob it does have read performance issues.

Samsung are aware of this and maybe issuing a fix around the 15-16th of this month to fix it. It's a bug

Info here about the update


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October 2, 2014 2:25:02 AM

Paul NZ said:
If thats the 840 Evo, it is a known prob it does have read performance issues.

Samsung are aware of this and maybe issuing a fix around the 15-16th of this month to fix it. It's a bug

Info here about the update




but my write speed is slower by 50MB/s :( 
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Related resources
October 2, 2014 2:26:26 AM

Update : health status in crystaldiskinfo is Good 100% temp 42degrees
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a b G Storage
October 2, 2014 2:26:40 AM

It may or may not fix that too. Will have to wait till the 15-16th. Is yours the Evo or the Pro?? Not too sure if theyre updating the Pro as well
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October 2, 2014 2:28:13 AM

Paul NZ said:
It may or may not fix that too. Will have to wait till the 15-16th. Is yours the Evo or the Pro?? Not too sure if theyre updating the Pro as well


I'm using evo. I'm suspecting its my drivers. In the guru3d they used msahci, while i use amd sata driver which im not sure if its running on ide or ahci mode

Update : i found out amd_sata driver is ahci driver. I shall wait for the driver update
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a b G Storage
October 2, 2014 11:53:06 AM

Samsung are bringing out a firmware update not a driver update for the Evo. Since its a bug
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Best solution

October 2, 2014 12:19:22 PM

you have to remember too that those drives are tested as secondary drives and not primary drives. When you boot to windows off of a ssd and run a benchmark, there are thousands of other things that are going on that windows is pulling reads and writes for, your benchmark will almost never be accurate.
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a b G Storage
October 2, 2014 2:59:24 PM

The FW update is only coming out on the 15 for the EVO and possibly the original 840, not the PRO. The issue the FW addresses doesn't affect synthetic benchmark results.

What motherboard do you have?
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October 2, 2014 10:53:09 PM

Palorim12 said:
The FW update is only coming out on the 15 for the EVO and possibly the original 840, not the PRO. The issue the FW addresses doesn't affect synthetic benchmark results.

What motherboard do you have?


m5a99x evo r2
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October 2, 2014 10:55:00 PM

nick779 said:
you have to remember too that those drives are tested as secondary drives and not primary drives. When you boot to windows off of a ssd and run a benchmark, there are thousands of other things that are going on that windows is pulling reads and writes for, your benchmark will almost never be accurate.


However i find my boot speed is slower than others have in youtube :( 
It took like 46s to boot
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a b G Storage
October 3, 2014 6:16:43 AM

Go into device manager and find the dropdown for IDE ATA/ATAPI controllers. In there, if you see a Standard driver, go on AMD's website and find the AHCI controller and download and install it. AMD's website is convoluted, so it's probably a part of their Chipset download.

If you see an AMD driver, Right click on it, select update driver software, in the wizard that pops up select Browse my computer for driver software, then select Let me pick from a list, in that list, select the Standard driver and hit next. When you close the wizard, it will ask you to restart the computer.
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October 3, 2014 6:40:00 AM

I had changed to msahci driver and it did nth and i changed it back.

After some days, my speed increased. Probably when i test my ssd, many programs were running...
My benchmark is now read 497mb/s write 387
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a b G Storage
October 3, 2014 6:44:42 AM

That's looks better than before. I have seen issues with the AMD Southbridge 950 and SSDs. Sometimes it works perfectly fine, like one of my test machines, other times it acts worse then a Marvell controller, like some of my customers. BTW, is your SATA cable rated for SATA 6GB/s? it should be printed somewhere on the cable.
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October 3, 2014 6:49:45 AM

Palorim12 said:
That's looks better than before. I have seen issues with the AMD Southbridge 950 and SSDs. Sometimes it works perfectly fine, like one of my test machines, other times it acts worse then a Marvell controller, like some of my customers. BTW, is your SATA cable rated for SATA 6GB/s? it should be printed somewhere on the cable.



Its impossible for me to check my cable now. But i used the cable came from Seasonic 620W m12II. It should be sata 3 6gb/s
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a c 253 G Storage
October 3, 2014 11:22:34 AM

kaiteck said:
Palorim12 said:
That's looks better than before. I have seen issues with the AMD Southbridge 950 and SSDs. Sometimes it works perfectly fine, like one of my test machines, other times it acts worse then a Marvell controller, like some of my customers. BTW, is your SATA cable rated for SATA 6GB/s? it should be printed somewhere on the cable.



Its impossible for me to check my cable now. But i used the cable came from Seasonic 620W m12II. It should be sata 3 6gb/s


SATA III cables are just marketing BS. All SATA cables can handle SATA III.

Don't worry about this.

Yogi

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October 6, 2014 5:33:01 AM

kaiteck said:
nick779 said:
you have to remember too that those drives are tested as secondary drives and not primary drives. When you boot to windows off of a ssd and run a benchmark, there are thousands of other things that are going on that windows is pulling reads and writes for, your benchmark will almost never be accurate.


However i find my boot speed is slower than others have in youtube :( 
It took like 46s to boot


Did you migrate onto the SSD or do a fresh install? Are you overprovisioned?

I have a laptop at home its a 2010 HP DV7T with a 2ghz i7 in it and I get ~15-20 second startups. Granted, I strip down my OSes and dont like crap running in the background, but still.

I also have around 25 i5-4300U laptops deployed with 120 and 250gb evos deployed at work, and they consistently get 7-12 second boots.

Im not sure whats going on if you get super slow boots. I just did a performance test on a machine thats encrypted and got these results: 250gb evo 25% OP
Seq Read 554MB/s Write 532MB/s
Random read iops 93k Random write iops 67.5k.

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