Hi, TL;DR: Can I install Intel C600 Series Chipset SATA AHCI Controller on Win10 on my Asus P9x79 Pro MotherBoard for my new Samsung 860 EVO SSD (without having installed IRST driver set), or will that brick my SSD? My system: ASUS P9x79 Pro, new Samsung 860 EVO SSD. I used to have Windows 7, but bought Windows 10 with the new SSD. After installing Windows 10, I ran various SSD benchmarks and noticed that several values are quite below of what they should be. I.e. in SSD Magician Benchmark only 60.000 IOPS for reading, but it should be close to 100.000. I also noticed that there are no IRST (Intel Rapid Storage Technology) drivers for Windows 10 on the Asus Homepage for my MoBo. I knew that there were IRST drivers for Win7. Did some troubleshooting and research, but that was all misleading. Talked to ASUS, Samsung and Intel support. The SATA mode in BIOS was always set to AHCI, that is not the problem. Intel support told me they have not made IRST drivers for my chipset (x79) for Windows 10. Only up to Windows 8.1. So, to research, I decided to install Windows 7 on the same new SDD. And now the speed tests were all much better. Same SSD (Samsung 860 EVO 1TB) Samsung Magician - IOPS Read and write Win7 (with IRST): 99,365 (read) and 89,111 (write) Win10 (no IRST): 59,814 (read) and 52,246 (write) Crystal Mark SSD Test (MB/s): Seq-Q32T1: Win7: 564 (read) and 537 (write) Win10: 564 (read) and 546 (write) 4KiB-Q8T8: Win7: 410 (read) and 364 (write) Win10: 409 (read) and 363 (write) 4KiB-Q32T1 Win7: 409 (read) and 363 (write) Win10: 220 (read) and 194 (write) 4KiB-Q1T1 Win7: 48 (read) and 143 (write) Win10: 43 (read) and 105 (write) So, several values are quite faster in Win7. Now I don't know what to do. I'd like to use Windows 10. Can anyone tell me how much of a real life difference these speed differences make? I browse, email, watch HD video, videogame (Dark Souls, HotS, Tyranny,...) and video-edit (AVID, with external non-SSD hard drives as data drives) on this machine. I don't know what significance it is, that the 4KiB Q32T1 test is half the speed on Win10 than it is on Win7. Especially, since many other values are very similar between the two tests (Win7 vs Win10). Or even better, If anyone knows of any AHCI driver that I could use on Win10 with my old motherboard? AS SSD benchmark tells me I'm using the 'standard AHCI controller' drivers on Win10. On Windows 7, AS SSD says I am using iaStorA = Intel C600 Series Chipset SATA AHCI Controller. Is there any way that I could install this C600 driver on Windows 10, even though i can't install IRST? or would that brick my SSD? This link here (https://downloadcenter.intel.com/do...Te-AHCI-SCU-Software-RAID-Driver-for-Windows-) says that the driver is Windows 10 compatible. But Intel also wrote me in an email that they don't offer IRST drivers for my chipset x79 for Windows 10. Any help would be greatly appreciated. Thank you.