英特尔快速存储驱动总是自动掉sata1.5G

[小李子]

英特尔快速存储驱动14.0.5.1081，h81主板，sata由于使用需要开了热插拔功能，主板上接的sata硬盘在大量连续读写后总是自动降到sata1.5G，要恢复只能重启电脑，尝试安装其他版本的快速存储驱动也有这个问题，很烦人，而且掉1.5g的时候硬盘还会报io错误（硬盘确认没有问题，无坏道，换了好几块硬盘都一个样，换主板sata口也一样）链接电源管理开启和禁用都一样，安装win10自带的ahci驱动就没有这个问题，但是我的sshd就无法被加速了，有什么办法可以解决吗，感谢

[Manas_Intel]

Hello @小李子,

Thank you for reaching out regarding the Intel Rapid Storage Technology (RST) driver issue where your SATA connection drops to 1.5Gbps after intensive read/write operations.

Since the Intel® H81 Chipset specifications officially state "Intel® Rapid Storage Technology: No," we have identified the core of the conflict. While you can physically install the RST driver, the H81 hardware logic does not fully support the advanced RST features. This mismatch is likely why the driver is "down-training" your connection to 1.5 Gbps (SATA I) and throwing I/O errors during heavy stress - the driver is trying to manage the link in a way the chipset isn't designed to handle.

Based on this, here is the recommended path forward:

Our Recommended Solution

Since the H81 does not officially support the RST feature set, the most stable configuration for your specific hardware is:

1. Uninstall the Intel RST Driver and revert to the Standard SATA AHCI Controller driver that comes with Windows 10.
2. Disable Hot-Swap (if not needed): If you are not actually swapping drives while the PC is on, disable "Hot Plug" for that specific port in your BIOS. This often stabilizes the SATA link speed.
3. Check Link Power Management (LPM): If you insist on using an older RST driver (like version 13.6), you must disable LPM in the registry, as the H81 often fails to negotiate power states correctly with newer drivers, resulting in that 1.5 Gbps drop.

Official Validation: You can confirm the lack of RST support under the "Advanced Technologies" section here: Intel® H81 Chipset

By moving to the native Windows driver and ensuring you are on Port 0 or 1, the "annoying" drops to 1.5 Gbps and I/O errors should resolve.

Warm regards,

Manas Sharma

Intel Customer Support Technician

[Manas_Intel]

Hi @小李子,

I just wanted to gently follow up on my previous message regarding the SATA link speed issue on your system.

Have you had a chance to try switching back to the standard Windows AHCI driver or adjusting the BIOS settings we discussed?

I’d really appreciate hearing how things are behaving on your end after those changes.

If the issue is still persisting—or if anything in the steps wasn’t clear—please feel free to let me know. I’d be more than happy to continue working through this with you and explore other options together.

Looking forward to your update.

Warm regards,

Manas Sharma

Intel Customer Support Technician