EXTREMELY Slow Write Performance on SanDisk U100 SSD

[earlgreyallday]

I am getting horrible performance on my 128GB SanDisk U100 SSD and I don't know why:

I have ran this benchmark multiple times to the same outcome. My computer becomes almost unusable any time I install or update software and it's really bugging me.

Things I have tried:
- Made sure TRIM was enabled using fsutil
- Reduced the page file
- Switching to a different ATA cable and port on the motherboard
- Uninstalling and reinstalling nForce drivers
- Made sure nothing was hogging disk usage in the resource monitor. Everything looks fine.
- Checked for firmware updates using the SanDisk software
- Enabled write caching

OS: Windows 7
Mobo: MSI P6N Diamond (LGA 775, nForce)

I would really appreciate any help on this.

 

[ur6beersaway]

Enabled AHCI mode in sata config in BIOS?

 

[earlgreyallday]

Enabled AHCI mode in sata config in BIOS?

My motherboard doesn't seem to have any settings for AHCI. However, I saw an option to use RAID and tried that but it seems to have no effect on performance.

 

[ur6beersaway]

Hmmm, RAID is useless, for this problem, restore it to IDE.

 

[ur6beersaway]

Download San-disk toolkit utility & upgrade the firmware (if there is one) to tighten things up.

http://kb.sandisk.com/app/ssd/session/L3RpbWUvMTM4MTE5MDA1OS9zaWQvS3JQSGFlQ2w%3D

 

[earlgreyallday]

Download San-disk toolkit utility & upgrade the firmware (if there is one) to tighten things up.

http://kb.sandisk.com/app/ssd/session/L3RpbWUvMTM4MTE5MDA1OS9zaWQvS3JQSGFlQ2w%3D

I have tried this already, the SanDisk software just tells me "No firmware information for this device."

 

[ur6beersaway]

Let's check~ Device manager>>Ide/ata controller>>click properties>>update driver.

You could check for your (brand) motherboard's BOIS update, also; some have improvements to controller drivers.

 

[earlgreyallday]

Let's check~ Device manager>>Ide/ata controller>>click properties>>update driver.

You could check for your (brand) motherboard's BOIS update, also; some have improvements to controller drivers.

Windows update installs an nForce driver which looks like the same one I was using before. I just updated the BIOS but I don't see any changes, at least not regarding anything to do with this. Either way, still getting the same bad performance 🙁

 

[corky1000]

I just tested my Sandisk 128 and it came out as double your score, but this drive is showing poor results too.
It's in the range of Mechanical hard drives, when tested on Passmark Performance Test.
It's particularly low scoring on the random seek and rewrite.
The big difference on this test, from yours, is in seq read and write, where you get half of my seq read and 1/30th of my seq write
Sorry, I didn't know how to post the graph and now I clicked it away. But I got a couple hundred on seq write and low like yours on others.

I wish I had bought something different. Mine also has no firmware update ability.

 

[earlgreyallday]

I just tested my Sandisk 128 and it came out as double your score, but this drive is showing poor results too.
It's in the range of Mechanical hard drives, when tested on Passmark Performance Test.
It's particularly low scoring on the random seek and rewrite.
The big difference on this test, from yours, is in seq read and write, where you get half of my seq read and 1/30th of my seq write
Sorry, I didn't know how to post the graph and now I clicked it away. But I got a couple hundred on seq write and low like yours on others.

I wish I had bought something different. Mine also has no firmware update ability.

In case you're wondering, I wasn't able to find a way to fix this so I just gave up and swapped the SSD with another from my laptop since it doesn't need the performance as much as my desktop does. I guess it could just be faulty, but it's weird that SMART considered it 100% healthy...

 

[Degru]

Super late, I know, but have you tried zeroing out the drive? I have a Sandisk Cruzer Extreme 3.0 flashdrive which seems to be using this SSD's controller: http://imgur.com/1inD3wA , and I have the same exact problem. Write speeds degrade to 7MB/s after using it for a while, particularly with data such as music. However, zeroing it out fixes it (format it with "quick format" unchecked, or run "clean all" on it in diskpart).

If this fixes the issue for you, it would also confirm something for me (that the performance issue I'm having with my flashdrive is not because it is a flashdrive).

Also, this seems to do better with the exFAT filesystem. When formatted as NTFS I'd get this issue within a couple hours of filling it up, but with exFAT I'd only have to zero it out every month or so. This limits you to only data storage, but it's worth a try.