Mac Pro 5,1 Cost effective NVMe SSD drives

[arche3]

Originally Posted by Howardk

Hi Darryl

Yes no raid for sure. I did look at this adapter card and it does look like a nice solution, however still a couple hundred $ and hoping to avoid that cost. I realize we may be spending dimes-of-time to count pennies here, but that's were its at for some people, so I believe it helpful to go further down the road.

On aside >>this requires the x16 connector in the Mac Pro 5,1, which while available in this config and the performance would be nice, it could not be migrated to an HDx 5,1 rig down the road (HDx requires the 2nd slot for the Core card some reason, at least that is what I remember from the install guide). Maybe the HD cards do work bumped down the line one slot, contrary to the install guide recommendation, I have not researched. I realize this not in the original question, but could be a consideration for some.<<

I understand that bus speed of PCIe version 2 x4 lanes is 2.0 GB/s. In the case of a dumb dual card, does this mean we should see around 1GB/s r/w per m.2 SSD if both busy on one x4 dumb adapter card? If so, that would be perfect for this case. . . sure it would not be leveraging the speed of these m.2 x4 SSDs, but it would be very good performance on a low budget, plus when it is time to upgrade to a different computer these m.2 SSDS can be moved forward to the next system and the greater performance realized.

I still feel I am on the hunt for a dumb dual m2 adapter card with decent cooling. What am I missing in my thinking?


Thanks. . .

In the 5.1, Keep in mind sometimes the pcie ssd or nvme cards don't run at full speed in the 5.1 in slot 2 x16 slot. I don't know why. But some people have had this issue. I have to use my pcie sonnet ssd raid card in slot 4 in a 5.1 to get full disk speed.

Sent from my SM-G986U using Tapatalk