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Newbie
Posts: 2
Registered: ‎04-07-2019

Extremely slow

I am trying to figure out why my SSD's are running so slow (I purchased two 500gb Extreme SSD's). Connected to both USB-C and USB-A 3.1 ports on an Asus Rog Strix X470-F motherboard, both types of 3.1 ports are listing the following speeds on CrystalDiskMark 6.0.2 x64:

 

Read:44.40MB/s

Write:43.60MB/s

 

These are nowhere near the advertised *Up to* 500MB/s

 

Is there a firmware update or something that I am missing. I truly don't understand how they can be running so slow. Any help would be greatly appreciated.

 

Screen Cap from CDM of new SSD attached.

CDM-ExtremeSSD test.PNG
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Newbie
Posts: 3
Registered: ‎04-29-2019

Re: Extremely slow

That is not normal.

 

I think SanDisk's problems are too little that posts here just get's ignored.

If not for the water resistance, I would have just bought an M.2 drive and put

it in an enclosure.

 

 

 

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Newbie
Posts: 2
Registered: ‎04-07-2019

Re: Extremely slow

Is that the speed you are getting from yours? Something is definitely wrong with mine if that is the case.  I can't believe I've never gotten a response from Sandisk either. Lesson learned for me I guess.

Newbie
Posts: 1
Registered: ‎06-02-2019

Re: Extremely slow

Hi there,

I have basically the same issue with speed, it's too low!

How can I fix it?

 

thanks,

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Newbie
Posts: 1
Registered: ‎07-02-2019

Re: Extremely slow

Are you using the included USB-C to USB-A 3.0 cable? When I use the included cable I achieve the advertised speed.

 

When I use another USB-C to USB-A (likely 2.0) cable I do not. I think that may be your issue.

Newbie
Posts: 1
Registered: ‎09-13-2019

Re: Extremely slow

I have an older laptop with three USB ports. Two are USB 2.0 and one is a powered USB 3.0. This drive performs slow in the USB 2.0 ports (similar to the posts below) with R/W speeds just over 40 mb/s - nowhere near the advertised rate of up to 500.

 

When I plug it into the USB 3.0 powered port, however, viola. Not quite 500, but I'll take a sequential R/W 400 Mb/s on an old machine.. 

 

-----------------------------------------------------------------------
CrystalDiskMark 6.0.2 x64 (UWP) (C) 2007-2018 hiyohiyo
                          Crystal Dew World : https://crystalmark.info/
-----------------------------------------------------------------------
* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes
   Sequential Read (Q= 32,T= 1) :   402.645 MB/s
  Sequential Write (Q= 32,T= 1) :   405.312 MB/s
  Random Read 4KiB (Q=  8,T= 8) :    64.634 MB/s [  15779.8 IOPS]
 Random Write 4KiB (Q=  8,T= 8) :    63.989 MB/s [  15622.3 IOPS]
  Random Read 4KiB (Q= 32,T= 1) :    28.137 MB/s [   6869.4 IOPS]
 Random Write 4KiB (Q= 32,T= 1) :    22.436 MB/s [   5477.5 IOPS]
  Random Read 4KiB (Q=  1,T= 1) :    12.494 MB/s [   3050.3 IOPS]
 Random Write 4KiB (Q=  1,T= 1) :    14.079 MB/s [   3437.3 IOPS]
  Test : 1024 MiB [E: 16.6% (77.1/465.8 GiB)] (x5)  [Interval=5 sec]
  Date : 2019/09/13 22:31:22
    OS : Windows 10  [10.0 Build 18362] (x64)
 
Newbie
Posts: 1
Registered: ‎10-03-2019

Re: Extremely slow

Yes, I think so