3 Useful Tips on Optimizing SSD Performance


For most people, the biggest reason for choosing an SSD (solid state drive) would be its amazing read and write speed. But do you know what makes SSD faster than HDD? Let’s start from internal design of SSD.

What Makes SSD Faster

Like a USB flash drive or memory stick, there are no moving parts in an SSD, and all information is stored in micro chips. On the contrary, a traditional HDD has to use a mechanical arm with a read/write head to move here and there to locate the correct contents or storage location. That is the key factor to make HDD slow.

However, there are many causes reporting that an SSD is not always as fast as it should be. What’s the reason and how can we optimize it?

How to Optimize SSD Performance

For New SSDs

If a newly bought SSD is running slow, you can try enabling AHCI mode in BIOS.

With AHCI enabled, NCQ (Native Command Queuing) will be functional. Once NCQ is activated, SSD host controller will analyze data request and NAND data distribution to make full use of the bandwidth of host controller channel so as to enhance performance. In addition, compared with IDE, AHCI enjoys much faster transferring speed.

Well, how to enable AHCI?

For most motherboards, AHCI is enabled by default, but you’d better enter BIOS to check whether it has been activated or not. If yes, quit from BIOS. If not, change it to AHCI.


Then, you can try manually enabling TRIM if you are still running Windows XP or Vista. With TRIM enabled, your SSD could clean up deleted files immediately and always stay speedy

Of course, even if you are using recent OS, like Windows 8 and Windows 10, you can also check whether this function is enabled or not. Please type fsutil behavior query DisableDeleteNotify in CMD. If you get DisableDeleteNotify = 0, TRIM has been enabled. If it is DisableDeleteNotify = 1, please type fsutil behavior query | set DisableDeleteNotify = 0 to enable TRIM.

For SSDs That Have Been Used

If your SSD becomes slower than before, most probably partitions on SSD are misaligned, if your system is not infected by virus.

Though Windows will align partitions by default when we are creating or formatting partitions in Disk Management, moving, resizing, copying, and doing other operations on these partitions would make them misaligned.

With MiniTool Partition Wizard, a free partitioning tool for Windows, you can check whether partitions on SSD are aligned as well as align misaligned partitions in one simple step.


Just select a partition or select the entire SSD and choose “Align Partition” or “Align All Partitions” feature from the left action pane.

If the selected partition is already aligned, Partition Wizard will tell you “The specific partition does not need to change partitions alignment. It’s already aligned”.

On the contrary, if there are partition misaligned, Partition Wizard will help you align them after you click “Apply” button on the top left corner.

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