For many users, the newly purchased SATA SSD doesn't feel very fast. It's what we usually call 'speed down'. If you encounter this problem, you usually make some common mistakes, specifically Those mistakes, we listed them for your reference.
4K is not aligned
Don't ignore this problem. If the 4K is not aligned, it will greatly reduce the SSD read and write speed and shorten its life. Check whether the method is to use the 'AS SSD Benchmark' software to verify that the circle is Green, indicating that 4K is already aligned. If it is red, 4K is not aligned.
Generally the default is aligned. If there is no alignment, it can be adjusted with the DiskGenius partitioning tool.
Trim command is not turned on
The Trim command is also called disable delete notify. After the command is turned on, the SSD does not need to spend time to erase the original data during the write operation, eliminating unnecessary operations and improving the read and write performance of the SSD. Greatly reduced the loss.
The Trim command requires Win7 or higher. Check whether it is enabled. Refer to the following steps:
1. Click the Start menu and enter CMD in the search bar.
2, click 'command indicator' in the search results, select to run with administrator privileges;
3, enter 'fsutil behavior query DisableDeleteNotify';
4, if the return value is 0, it means that TRIM is on;
5, if the return value is 1, it means that TRIM is in the off state;
AHCI mode is not enabled
AHCI is also known as the advanced host control interface. Compared with the old IDE mode, it can better play the read and write performance of SATA SSD, and the improvement is 20&~70%. Therefore, the AHCI mode can be turned on to fully utilize the performance of SSD.
Turning on the AHCI mode is very simple. Here is an example of the MSI motherboard: Press the Del key to enter the motherboard BIOS while booting - SETTINGS - Advanced - Integrate peripherals - SATA mode - Select AHCI mode, then press F10 to save and exit. .
Interface reverse
The SATA interface is divided into SATA2.0 and SATA3.0. Although there is no difference in design between the two, the maximum theoretical speed of the SATA2.0 interface is only 300MB/s, and the current reading speed of the mainstream SSD has broken 500MB/s. If the SSD is connected to the SATA2.0 interface, it will definitely limit its performance.
If there is no problem above, but still slow down, then you should consider closing the cache buffer refresh to improve the read and write performance of the SSD. Take Win10 as an example, right click on 'this computer' - management - disk management - - Right click on the disk (at the red box) - Properties - Policy - Check 'Turn off Windows writes on the device to tell the cache buffer to refresh'. But note that after checking, make sure the process is not used. A power outage occurs to avoid data loss.
