sandisk extreme pro usb 3.0 128 GB very slow

Hi
I have a speed problem with Sandisk Extreme Pro usb 3.0.
My System. 4790K OC @ 4.4GHz (permanent), Asus Maximus Hero VII, 16 Gb 2130 ADATA RAM, 500 GB Samsung SSD.
Just purchased this PSSD and tested right away with HD Sentinel and CrystalDiskInfo - both failed, will exchange a drive for SMART failure.

SMART reports

From CrystalDiskInfo
Health Status : Bad (0 %)
E8 __0 100 __5 000000000000 Remaining Life

From HD Sentinel PRO
Failure Predicted - Attribute: 232 Spare Blocks Remaining
Replace hard disk immediately.
The TRIM feature of the SSD is supported and enabled for optimal performance.

It is recommended to backup immediately to prevent data loss.

232,Spare Blocks Remaining,5,0,100,Pre-Failure: Data loss predicted,0,0,Enabled

232 -attribute number.

So I guess I am not lucky this time, so I decided to check the speed, just in case and was surprised by the results

Sequential Read : 44.557 MB/s
Sequential Write : 44.881 MB/s
Random Read 512KB : 42.186 MB/s
Random Write 512KB : 39.549 MB/s
Random Read 4KB (QD=1) : 7.378 MB/s [ 1801.3 IOPS]
Random Write 4KB (QD=1) : 9.854 MB/s [ 2405.8 IOPS]
Random Read 4KB (QD=32) : 8.271 MB/s [ 2019.4 IOPS]
Random Write 4KB (QD=32) : 9.922 MB/s [ 2422.4 IOPS]

Test : 100 MB [N: 0.0% (0.0/119.2 GB)] (x1)

OR

Sequential Read : 44.533 MB/s
Sequential Write : 44.915 MB/s
Random Read 512KB : 42.315 MB/s
Random Write 512KB : 36.576 MB/s
Random Read 4KB (QD=1) : 6.705 MB/s [ 1637.0 IOPS]
Random Write 4KB (QD=1) : 6.864 MB/s [ 1675.8 IOPS]
Random Read 4KB (QD=32) : 6.941 MB/s [ 1694.6 IOPS]
Random Write 4KB (QD=32) : 6.989 MB/s [ 1706.2 IOPS]

Test : 1000 MB [N: 0.0% (0.0/119.2 GB)] (x1)

I did not reformatted yet, as I suppose to return it tomorrow, so it is in Fat32 format as shipped from the store. Label said 260 MB/s READ and 240 MB/s WRITE. I understand that my results can be lower, but not that much lower.
Is this because the drive is failing (SMART) or something else?

Any Ideas or suggestions?

Appreciate in advance for anything.
3 answers Last reply
More about sandisk extreme pro usb 128 slow
  1. I would have a good look in the bios of the motherboard in the advanced bios menus and setup options Kisianik.

    I know with my Asus board that supports fast charging of usb connected devices such as a phone ect via a cable by default are turned off in the bios and have to be enabled.

    Plus formatting of the drive and the type of format does matter and effects the final speed result .
    Daft as it sounds but usb super speed if the option for it exists in the motherboard bios is enabled.
    Or any 3.0 or 3.1 device compatibility is enabled.

    And the flash drive is connected to a usb port of the system case that has a blue plastic colored tongue or key peg ?
  2. Shaun o said:
    I would have a good look in the bios of the motherboard in the advanced bios menus and setup options Kisianik.

    I know with my Asus board that supports fast charging of usb connected devices such as a phone ect via a cable by default are turned off in the bios and have to be enabled.

    Plus formatting of the drive and the type of format does matter and effects the final speed result .
    Daft as it sounds but usb super speed if the option for it exists in the motherboard bios is enabled.
    Or any 3.0 or 3.1 device compatibility is enabled.

    And the flash drive is connected to a usb port of the system case that has a blue plastic colored tongue or key peg ?


    Thanks for showing interest here.
    I doubt it PC related, but let me check my external WD Helium 8TB drive, will post now.

    Sequential Read : 167.104 MB/s
    Sequential Write : 164.122 MB/s
    Random Read 512KB : 39.738 MB/s
    Random Write 512KB : 76.386 MB/s
    Random Read 4KB (QD=1) : 0.369 MB/s [ 90.2 IOPS]
    Random Write 4KB (QD=1) : 1.302 MB/s [ 317.8 IOPS]
    Random Read 4KB (QD=32) : 0.621 MB/s [ 151.6 IOPS]
    Random Write 4KB (QD=32) : 1.389 MB/s [ 339.2 IOPS]

    Test : 1000 MB [O: 31.7% (2362.1/7452.0 GB)] (x1)
    Date : 2017/01/10 20:29:32

    Speed seems to be OK for 5400RPM USB 3.0 HDD. Formatted NTSF.

    I checked Amazon reviews for the flash drive and everyone reported speed above 200 mb/s, at least I did not see anything below a 100 mb/s?!

    This is my older 16GB USB 3.0 Patriot drive

    Sequential Read : 216.786 MB/s
    Sequential Write : 26.221 MB/s
    Random Read 512KB : 208.914 MB/s
    Random Write 512KB : 11.179 MB/s
    Random Read 4KB (QD=1) : 5.480 MB/s [ 1337.9 IOPS]
    Random Write 4KB (QD=1) : 1.181 MB/s [ 288.2 IOPS]
    Random Read 4KB (QD=32) : 7.504 MB/s [ 1831.9 IOPS]
    Random Write 4KB (QD=32) : 1.376 MB/s [ 336.0 IOPS]


    That is why I am here.
  3. Major update, hence new post.

    Got a replacement. This time SMART is OK, which is good.
    Here are the test results, plenty.

    CrystalDiskMark (64bit) FAT32
    Random
    Sequential Read : 267.196 MB/s
    Sequential Write : 242.365 MB/s
    Random Read 512KB : 202.286 MB/s
    Random Write 512KB : 26.694 MB/s
    Random Read 4KB (QD=1) : 10.794 MB/s [ 2635.2 IOPS]
    Random Write 4KB (QD=1) : 11.215 MB/s [ 2738.0 IOPS]
    Random Read 4KB (QD=32) : 10.296 MB/s [ 2513.7 IOPS]
    Random Write 4KB (QD=32) : 11.650 MB/s [ 2844.2 IOPS]
    Test : 100 MB [N: 0.0% (0.0/119.2 GB)] (x1)

    Null ZEROs 00000
    Sequential Read : 267.196 MB/s
    Sequential Write : 241.806 MB/s
    Random Read 512KB : 202.556 MB/s
    Random Write 512KB : 27.187 MB/s
    Random Read 4KB (QD=1) : 10.806 MB/s [ 2638.1 IOPS]
    Random Write 4KB (QD=1) : 11.152 MB/s [ 2722.7 IOPS]
    Random Read 4KB (QD=32) : 10.272 MB/s [ 2507.8 IOPS]
    Random Write 4KB (QD=32) : 11.688 MB/s [ 2853.4 IOPS]

    Test : 100 MB [N: 0.0% (0.0/119.2 GB)] (x1) <0Fill>

    Null ONEs 11111
    Sequential Read : 267.153 MB/s
    Sequential Write : 242.445 MB/s
    Random Read 512KB : 202.860 MB/s
    Random Write 512KB : 27.450 MB/s
    Random Read 4KB (QD=1) : 10.813 MB/s [ 2640.0 IOPS]
    Random Write 4KB (QD=1) : 11.165 MB/s [ 2725.8 IOPS]
    Random Read 4KB (QD=32) : 10.259 MB/s [ 2504.7 IOPS]
    Random Write 4KB (QD=32) : 11.668 MB/s [ 2848.7 IOPS]

    Test : 100 MB [N: 0.0% (0.0/119.2 GB)] (x1) <1Fill>

    Random Large
    Sequential Read : 268.007 MB/s
    Sequential Write : 249.334 MB/s
    Random Read 512KB : 201.951 MB/s
    Random Write 512KB : 27.324 MB/s
    Random Read 4KB (QD=1) : 10.708 MB/s [ 2614.2 IOPS]
    Random Write 4KB (QD=1) : 10.635 MB/s [ 2596.5 IOPS]
    Random Read 4KB (QD=32) : 8.733 MB/s [ 2132.0 IOPS]
    Random Write 4KB (QD=32) : 10.705 MB/s [ 2613.6 IOPS]

    Test : 1000 MB [N: 0.0% (0.0/119.2 GB)] (x1)

    NTFS Random small
    Sequential Read : 267.026 MB/s
    Sequential Write : 205.502 MB/s
    Random Read 512KB : 202.051 MB/s
    Random Write 512KB : 27.892 MB/s
    Random Read 4KB (QD=1) : 10.760 MB/s [ 2626.9 IOPS]
    Random Write 4KB (QD=1) : 4.230 MB/s [ 1032.6 IOPS]
    Random Read 4KB (QD=32) : 10.551 MB/s [ 2576.0 IOPS]
    Random Write 4KB (QD=32) : 4.573 MB/s [ 1116.5 IOPS]

    Test : 100 MB [N: 0.1% (0.1/119.2 GB)] (x1)

    EXFAT Random small
    Sequential Read : 267.026 MB/s
    Sequential Write : 223.747 MB/s
    Random Read 512KB : 194.019 MB/s
    Random Write 512KB : 30.987 MB/s
    Random Read 4KB (QD=1) : 10.786 MB/s [ 2633.4 IOPS]
    Random Write 4KB (QD=1) : 3.912 MB/s [ 955.1 IOPS]
    Random Read 4KB (QD=32) : 11.195 MB/s [ 2733.2 IOPS]
    Random Write 4KB (QD=32) : 3.855 MB/s [ 941.1 IOPS]

    Test : 100 MB [N: 0.0% (0.0/119.2 GB)] (x1)

    And now I have to decide, which format to keep EXFAT or NTFS?
    Any ideas, anyone?
    P.S. I am planning to use it as transport drive with all file sizes, could be thousands of small files or bunch of huge files?
    ?
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