Review on IO CREST 4 Port SATA III PCI-e 3.0 x1 Expansion Card Non-Raid with Low Profile Bracket – ASMedia 1064 SI-PEX40156 SATA Controller by Chris Santos

This works well on Windows 10. The drivers are automatically installed before you get to the desktop. the speed of the PCIE Gen3 x1 interface, which is the bottleneck here when using two ports at the same time. What I mean is that for actual powering of 2 SATA ports you need about 10Gbps on a PCIE bus slot (meaning you need a x2 slot). Here in the PCIE x1 slot, a single SATA port offers a full speed of 530-540 MB/s, but if you use both (Aggregate or Stripe/RAID0) you won't get the 1000 MB/s+ you want, but will be capped at around 900 MB/s - since the PCIE x1 port can only transfer 8x1000^3 bits per second, so 8 Gb/s. The important thing here is that the advertised Gen 3 support is correct, it's not limited to Gen 2 like many of these 2 port cards are. This card put everything it could into the PCIE x1 slot, so everything is fine! Attached are performance tests with 1 Samsung 950 Pro 512GB drive (left) and 2 striping drives (right) for ASS-SD, CrystalDiskMark and only 1GB (files per frame) AJA test. That should answer all questions. This card is a reliable PCIE x1 GEN 3 card!Test PlatformWindows 10 ProASUS Strix-E z490Intel i9 10900K64GB DDR4This card resides in the furthest PCIE x1 slot from the CPU. All other slots are filled with NVMe directly to the CPU (10500 GB/s) and via the PCH z490 chipset. This PCIE x1 slot resides on the PCH chipset (the usual x4 Gen 3 DMI 3.0 constraint), but no other critical I/O is used.