intel 520 isue

Started May 31, 2013 | Discussions thread
brn Veteran Member • Posts: 3,040
Re: Been there

Don't install any AHCI driver.  At least not yet.

Disable AHCI in your BIOS.  Run with the SSD for at least a week without AHCI.  If you think you need AHCI (you may not), get the driver from

A primary benefit to AHCI is Native Command Queuing (NCQ).  This allows the drive to store multiple commands from the PC and execute them in the sequence it considers most efficient.  For a drive with moving parts, this can provide a lot of benefit.  The drive can make decisions on what to do, based on the physicality of the drive components.

An SSD doesn't have moving parts, so it doesn't benefit much.  In single threaded drive access circumstances (typical PC use), the extra computational overhead can actually be detrimental to drive performance.  In the case of heavily multi-tasking drive access, AHCI can be beneficial for an SSD.

 brn's gear list:brn's gear list
Canon PowerShot SD4000 IS Nikon D70 Nikon D90 Nikon D7000
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow