How to Optimize SSD for Faster Performance (Windows Tweaks)

Capacities of Solid State Drives are steadily rising, while prices continue to fall. It’s now common to find mid-range notebooks and desktop PCs with a decently sized SSD. All these new Solid State Drives replacing traditional platter based HDDs for everyday use will need to be optimized, and most users are probably not aware of the differences in setup procedures and regular maintenance for SSDs vs HDDs.

Disclaimer: This guide deals with making changes to the Windows Registry and other advanced system settings. PCHardwareHelp.com will not be responsible should you make any mistakes that cause damage to your Windows installation. Proceed with caution and at your own risk.

1. IDE vs AHCI Mode

Before installing Windows on a new SSD, you should first enter your motherboard’s BIOS and enable AHCI (Advanced Host Controller Interface) mode instead of IDE in the SATA controller’s configuration area if given the option (this would also be a good time to update the BIOS firmware before installing Windows). Older systems may not have this option, but most newer motherboards will support AHCI. If your BIOS is already setup for AHCI don’t touch a thing. IDE is typically the default option used when installing a normal HDD, so if making the switch this will need to be changed. Once AHCI is selected it will enable hot swapping and native command queuing, which should give you a nice performance boost of 10-15 percent over IDE mode. AHCI is supported in Vista and all Windows operating systems released after it.

Reminder: This step must be completed before installing the OS. The PC will fail to boot if you install in IDE mode and later try to change it to AHCI, forcing you to format and reinstall windows in the correct mode.

It is possible to enable AHCI mode on a current Windows 7 install in IDE mode if you don’t wish to do a fresh install. This will require making some changes via Regedit then entering your BIOS after rebooting and switching to ACHI mode. Here’s how to do it:

1. Open the Run menu by hitting the Windows key + R.
2. Type in Regedit and hit enter to enter the registry navigator.
3. First, navigate to HKEY_LOCAL_MACHINE\System\CurrentControlSet\services\iaStorV and modify the REG_DWORD Start from 3 to 0 by right-clicking it and hitting modify.
4. Now navigate to HKEY_LOCAL_MACHINE\System\CurrentControlSet\services\msahci and follow the same procedure of modifying the Start value to 0.
5. After those two changes are made to Regedit you must reboot your PC, enter the BIOS, and switch from IDE to AHCI mode. Now you’re done!

2. Confirm TRIM is Running

The purpose of TRIM is to allow the Operating System to communicate to the SSD that a block of data is no longer needed or being used by the file system (garbage collection). If TRIM is not functioning you may notice a drop in performance. TRIM is supported in Windows 7 and 8, but not Vista. Follow these steps to verify that TRIM is installed and working properly:

1. Search for cmd in Windows search.
2. Once the Cmd program is displayed in the search right click it and select Run as Administrator.
3. Now type in this line without quotes and hit Enter: “fsutil behavior query DisableDeleteNotify”

If TRIM is running it will return DisableDeleteNotify=0, or DisableDeleteNotify=1 if TRIM is not functioning.

3. Avoid and Disable Disk Defragmenter

Disk Defragment should never be run on a SSD. Fortunately, the default setting for Windows 7 and 8 (but not Vista) for a SSD is to disable the disk defragmentation scheduling utility because it is simply not needed for a Solid State Drive. All running the disk defragmenter on a SSD will accomplish is adding additonal wear and tear by increasing number of writes, thus decreasing the expected lifespan of your SSD.

If you are running Vista and need to disable the disk defragmentation utility or just want to verify it isn’t running in Windows 7 or 8, follow these steps:

1. Type dfrgui into Windows Search and open Disk Defragmenter.
2. Select your SSD from the list of devices and hit Configure Schedule.
3. Uncheck Run on a schedule if checked to disable disk defragmenter from running automatically.

1. Type cmd into Windows Search. Right-click on command prompt and select Run as Administrator.
2. Now type in powercfg -h off and hit Enter to disable hibernation.

4. Disable Indexing Service/Windows Search

The indexing service in Windows is implemented to make the search function perform faster by storing an index of file locations. The service was designed to improve search performance when using a mechanical HDD, but the quick response times of SSDs make this service obsolete and unnecessary. Indexing is also another service that makes multiple small writes to a storage drive any time a file is created, changed, or removed. It’s wise to disable this service if you wish to avoid unnecessary wear to the SSD.

1. Click Start and open Computer.
2. Find the SSD you would like to disable indexing service on, right-click it and choose Properties.
3. Uncheck the box next to Allow files on this drive to have contents indexed in addition to file properties.

5. Enable Write Caching for SSDs

Write caching can improve performance of both SSDs and HDDs. It’s usually enabled by default, but if not here’s how to turn it on:

1. Right-click Computer and select Properties.
2. Click Device manager on the left then expand Disk drives.
3. Find your SSD, right-click it, hit Properties and go to the Policies tab.
4. Make sure Enable write caching on the device is checked and hit Ok.

Write-cache Buffer Flushing

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Double check to make sure the box next to “Turn off Windows write-cache buffer flushing on the device” is not checked. Having this option selected will put your filesystem and any important data stored on the drive at risk in the event of any external interruptions such as power failures. With that said, if you are not concerned about data integrity and only want the fastest SSD performance possible, enabling this option may provide the speed boost you crave. I say may because this seems to vary from drive to drive and system to system (Intel recommends to not disabling write-cache buffer flushing on their drives). Benchmark your SSD with it enabled and disabled to determine if it provides any benefit.

6. Update Drivers and Firmware for Your SSD

The software that comes bundled with most PC hardware (SSDs included) is usually outdated, so get into the habit of checking the manufacturers website to download the newest drivers and firmware updates. This applies to every component in the PC, especially your motherboards chipset drivers as they can have a huge impact on SSD speed and reliability.

7. Optimize or Disable Page File for SSDs

Yet another feature that makes numerous writes to a SSD that could potentially lessen lifespan. There is a lot of debate about whether page file should be used or not. My personal recommendation is to keep it enabled as a page file is required for the system to create memory and kernel dumps. Another solution is to move your page file to a seperate drive if you have one available.

To move page file onto a secondary drive:

1. Right-click Computer and select Properties.
2. Click Advanced system settings in the left pane.
3. Select the Advanced tab and under the Performance section, click Settings…
4. Choose the Advanced tab and click the Change… button under Virtual Memory.
5. Uncheck the box next to Automatically Manage paging file size for all drives.
6. Select the second drive where the page file will be stored, choose either a fixed Custom size or System managed size, click Set then Ok.

To disable the page file completely just follow the above 1-5 steps, select No paging file, click Set then Ok.

8. Turn Off System Restore

This is a tweak I assume many SSD users will choose not follow, but you should. When irreversible problems occur System Restore can be a nice fallback, but if you have no important data that needs to be protected on your C: drive (you should be backing up externally anyway) I suggest you disable System Restore. Once System Restore has been turned off it will free up a few GB’s of space, reduce writes to your SSD, and allow you to avoid conflicts with TRIM that can lead to severe drops in SSD performance.

To turn of System Restore you must:

1. Right-click on Computer and choose Properties.
2. Navigate to System Protection in the left pane.
3. Press the Configure button.
4. Select the bubble next to Turn off system protection and click OK.

9. Use High Performance Power Settings

The power saving options in Windows can be useful for a notebook PC when you need that extra hour of battery life. In a desktop environment the high performance power plan should be used so none of your components are downclocked to lower speeds in a effort to lower power consumption. You can also enable garbage collection to run on your SSD when idle in the advanced power management settings by telling your drive to never turn itself off and and disabling Sleep.

1. Go to Control Panel and click Power Options.
2. Select the High performance plan. If high performance isn’t viewable, click Show additional plans to expand the entire list.
3. Click Change plan settings next to the High performance plan.
4. Now click Change advanced power settings
5. Navigate to the Hard disk option and change Turn off hard disk after to Never (0 minutes).
6. Navigate to the Sleep option and change Sleep after to Never (0 minutes) and click OK.

Disable Hibernation

This one will be a personal preference. If you actually need hibernation to function for the power saving or other reasons obviously just leave it be, but disabling it will free up a good chunk of precious storage capacity on your SSD, as hibernation uses approximately the same amount of space as the amount of RAM installed in the PC. If you have 16GB of RAM that is no small amount of space on most SSDs.

To disable Hibernate:

1. Search for cmd and right-click the command prompt icon to select Run as administrator.
2. Type powercfg -h off and press Enter.

Conclusion

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You may not choose to try all of these suggested SSD tweaks and optimizations, but it’s important for you to, at the very least, install Windows onto your SSD in AHCI mode, verify TRIM is working properly, and disable scheduling of disk defragmentation. These steps will insure your SSD runs more efficiently with better performance and hopefully continues operating into the future with a longer lifespan.

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