Samsung 840 SSD Read Speed Slow Than Normal

I recently installed window 7 on my SSD and my speed didn’t increase to a point where I wanted. I installed all required drivers, all windows updates are completed and performed some fixes in windows. Samsung 840 SSD, Read Speed Slow Than Normal

I have enabled AHCI in BIOS and registry but I didn’t find the option in BIOS. I could change the registry value but I didn’t see any option that could change to AHCI, RAID or IDE. I think that BIOS or chipset drivers are also not optimal.

After scanning my system it becomes clear that my computer is capable up to 6gb/s and now the speed is up to 3gb/s for my SSD. Moreover, my Samsung 840 SSD, read speed slows than normal. Your help will be greatly appreciated.

Try to follow the following instructions to speed up you SSD.

Samsung 840 SSD, Read Speed Slow Than Normal

In BIOS, make sure that SATA ports are configured to AHCI.

Go to Start.
In the Search bar type ‘Regedit’.
Go to “HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\msahci”.
Right click on Start.
Click Modify.
Alter the value data to 0.
Restart the PC.
Go to BIOS and set SATA configuration to AHCI.

Enable trim on your computer if it supports it.
Disable Superfetch and Prefetch.
Make disable indexing.

Go to My Computer.
Right click on your SSD.
Click properties.
User General tab to look to the bottom and uncheck ‘Allow files on this drive to have contents indexed’

Disable write catching.

Go to My Computer and Right Click.
Select Properties.
Go to Device Manager.
Click Disk Drives.
Right Click on your SSD.
Click Properties.
Click policies tab.
Uncheck ‘Enable write catching for this drive’.

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