Update of the start post
Changelog:

• new: 32/64bit Intel RST(e) drivers v15.5.2.1054 WHQL for Win7-10 dated 04/24/2017
• new: Intel RST(e) Drivers & Software Set v15.5.2.1054 WHQL dated 05/03/2017

1. The above mentioned drivers are WHQL certified and usable with all Windows Operating Systems from Win7 up. Only Intel 100-Series/C230 Chipsets, 200-Series Chipsets and other Systems with an Intel Skylake or KabyLake CPU are natively supported by these drivers.
2. New: These drivers additionally do support the "Intel(R) Optane(TM) Memory System Acceleration" (if the related hardware is on-board).
3. Similar to the v15.2 series the v15.5 series RAID drivers natively do support the following Intel SATA RAID Controller DeviceIDs: DEV_2822, DEV_282A, DEV_9D07, DEV_A106, DEV_A107, DEV_A286 and DEV_A28E.
4. Thanks to plutomaniac and Pacman resp. Station-Drivers for the source package.

@koitsu:
Welcome at Win-RAID Forum and thanks for your interesting report.
Since the OS of my current Z170 system is Win10, I haven't yet tested the Intel RST(e) drivers v15.5.2.1054 while running Win7.

Regards
Dieter (alias Fernando)

@Quest:
Welcome at Win-RAID Forum!
There is no big difference between Win7 and Win10 v1703 regarding the update of the in-use AHCI or RAID driver.
Depending on the current SATA mode of your on-board Intel SATA Controller, you have to run the Device Manager, to expand the section "IDE ATA ATAPI Controllers" (AHCI mode) or "Storage Controllers" (RAID mode), right-click onto the listed Intel SATA Controller (may have another name) and choose the "Update driver Software" > "Browse my computer..." options.
If you should get the message, that "the best driver has already been installed", you have to force the driver update by choosing the "Let me pick..." > "Have Disk" options.
Good luck!
Dieter (alias Fernando)

@Quest:
Before you are trying to update the AHCI driver, you have to make sure, that the related listed Controller is the Intel one and not another third party Controller (from ASMedia, VIA or Marvell). You can check it by comparing the HardwareIDs (right-click onto the Controller > “Properties“ > “Details“ > Property“ > “HardwareIDs“). The VendorID of Intel is VEN_8086.
Since your Intel SATA Controller is running in AHCI mode, you have to check the file named iaAHCIC.inf, when you are going to force the driver installation.

@akbaar:
If you post benchmark results, you should add some informations: Chipset, OS, system drive and storage driver version.
Furthermore the numbers should be readable (I had big problems to identify resp. to guess them)

Intel Rapid Storage Technology (RST) Version 15.7.0.1002 Beta

Update of the start post
Changelog:

• new: 32/64bit Intel RST(e) drivers v15.7.0.1002 Beta for Win7-10 dated 03/24/2017
• new: Intel RST(e) Drivers & Software Set v15.7.0.1002 Beta dated 04/12/2017

1. The above mentioned drivers are digitally signed by Intel and usable with all Windows Operating Systems from Win7 up. Only Intel 100-Series/C230 Chipsets, 200-Series Chipsets and other Systems with an Intel Skylake or KabyLake CPU are natively supported by these drivers.
2. Thanks to Pacman resp. Station-Drivers for the source package.

Update of the start post
Changelog:

• new: 32/64bit Intel RST(e) drivers v15.7.1.1011 Beta for Win7-10 dated 05/31/2017
• new: Intel RST(e) Drivers & Software Set v15.7.1.1011 Beta dated 06/09/2017

1. The above mentioned drivers are digitally signed by Intel and usable with all Windows Operating Systems from Win7 up. Only Intel 100-Series/C230 Chipsets, 200-Series Chipsets and other Systems with an Intel Skylake or KabyLake CPU are natively supported by these drivers.
2. Thanks to Pacman resp. Station-Drivers for the source package.

Update of the start post
Changelog:

• new: 64bit Intel RSTe drivers v5.1.0.1098 WHQL for Win8-10 x64 dated 04/20/2017
• new: 64bit Intel RSTe drivers v5.1.0.1098 WHQL for Win7 x64 dated 04/20/2017
• new: Intel RSTe Drivers & Software Set v5.1.0.1098 for Win7-10 dated 04/27/2017

1. The packages contain the Intel RSTe AHCI and sAHCI drivers v5.1.0.1098 dated 04/20/2017. They are WHQL certified by MS and only suitable for Intel C600/C600+/C220/C220+ Series Chipset AHCI/sAHCI systems like X79 and X99. All Windows Operating Systems from Win7 up to Win10 are supported.
2. Unfortunately I was not able to extract the 32bit drivers from the Installer package.
3. Thanks to Pacman resp. Station-Drivers for the source package.