lodestar wrote:
PCI-Express lane management is still necessary even with the latest generation of Asus (and other makes) Intel Z370 boards. On your particular board it was designed to be AMD Crossfire compatible. So if both the PCI-E 16x slots were occupied with AMD graphic cards it would auto-select 8X speed for each card. Because this was based on auto-sensing there is the potential for it not to work as expected. For anything other than graphics cards the auto-sensing would set the slot speed to 4X. And as far as I remember there is nothing in the BIOS to over-ride that. And of course this is the earlier PCI-Express 1.0/1.1 standard so a 4X slot would be equivalent to approximately 1X on a PCI-E 3.0 board.
If you really want to try an NVME adapter then it should work with the help of Cloverleaf EFI. However what speed the NVME drive would run it at is problematic. It is going to be hardware limited because of the reasons already touched on. My opinion is that it will be around 20 to 25% of its speed on 4X PCI-Express 3.0 at best. Probably around the same speed as a SSD drive attached to one of your SATA II ports. Maybe you should try it anyway and see what results you get.
+1
I wish this forum lets me like and up vote like other forums.
I take it then bios disabling the gigabyte ethernet port and sata raid/pata jmicro should free up the 1x pci so i can continue using wireless along with 4x. is that correct? i can continue using wirelss n in pcie 1x provided i also disable the onboard ethernet port and sata raid/pata jmicro which frees up 2 pcie 1x lanes.
the nvme will go to the 4x pcie and hopefully 4x pcie 1.0
i had over wiki it says
SATA revision 2.0 (3 Gbit/s, 300 MB/s, Serial ATA-300)
1.0 2003 8b/10b 2.5 GT/s 250 MB/s 0.50 GB/s 1.0 GB/s 2.0 GB/s 4.0 GB/s
https://en.wikipedia.org/wiki/Serial_AT ... al_ATA-600)
https://en.wikipedia.org/wiki/PCI_Expressthat sata 2 is 300mb/s
pci 4x 1.1 is 1000 mb/s or 3 times the bandwidth
plus lower latency
do i have to configure the bios for the second 16x slot?
it seems the bios expects that slot to be occupied by a second graphics card and not a general purpose card like nvme card
yeah i head over to youtube
the vast majority of clover efi booting is for mac os sierra
but there are vids like this
https://www.youtube.com/watch?v=PxfkwgxLL2c&t=1044sover 1-2 hours in length.
that explains i need certain drivers and how to install clover and boot windows 10 which
apparently i have to partition the ssd, create a MBR, install clover on a MBR, second partition is GUID
hunt down efi drivers and nvme drivers, and install windows on the second partition.
clover boots first on the mbr then creates a UEFI that can then load windows, kinda like a virtual machine.
most of the instructions are for booting mac os sierra though
some ssd are sold with this pcie nvme adapter at the included cost including one by kingston, which is lower price or costs same as samsung evo 960 at newegg and amazon.
of course if it doesn't work i want to return it and so i may be stuck with microcenter
thanks