alexanderhernan wrote:I don't know of any adapters that can suppport 2 SSD's via PCIe bus. However you can always use 2 adapters with 2 SSD's.
Just make sure you setup your primary boot drive in the system bios to boot from the SSD first.
If you get an M.2 SSD then I know that the Samsung Evo 850 and Samsung SM951 SSD will work as they both are "ACHI".
Advanced Host Controller Interface (AHCI) is a technical standard defined by Intel that specifies the operation of Serial ATA (SATA) host bus adapters in a non-implementation-specific manner.
I don't know if the HP z800 will support the NEWer "Nvme" SSD's as in the Samsung 950 Pro or Intel 750 PCIe SSD.
In terms of adapters that support 2 SSD's via PCIe a good one is the Apricorn Velocity Duo x2. Its rather pricy and mainly worth installing if you want to set up Raid 0 on the two SSD's for a c.a. 800 MB/s transfer speed.
I also recommend Samsung SSD's. as a user of the 950 Pro and 850 Evo and 850 Pro. One thing which I like with these drives is consistent write speeds. With certain other manufacturers, the speed starts out fast and then dips significantly as the cache is filled up when doing large transfers. I haven't had this happen on a Samsung and also on th 850 Evo / Pro one can set up Rapid mode where you use the system RAM as cache. Overall these are great drives.
As for the 950 Pro on the Z800 - it is rather unlikely that this would work but you never know until you give it a go. In any case, you would likely be limited somewhat in terms of speed since the standard requires PCIe 3.0 x4 for full bandwidth of 32Gb/s and the Z800 only has PCIe 2.0.
