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I got an Aquacomputer kryoM.2 evo PCIe 3.0 x4 adapter for M.2 NGFF PCIe SSD, M-Key with passive heatsink 2 1/2 years ago and it has worked well. Since the Mac Pro bandwidth is limited, you do not need a top performer.
But the drive makes a BIG difference.
It has a light flashing out of the back cheese grater holes.
Is this comparing to SSD or HDD?
 
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Background:

I've got a 2009 Mac Pro 4,1 flashed to 5,1 running the latest 144 firmware.

I recently purchased a Highpoint R1104 (Rocket 1104) so that I can utlize the second NVME drive I bought over Christmas.

I am currently using a Crucial P3 Plus 2TB PCIe Gen4 3D NAND NVMe M.2 SSD, up to 5000MB/s - CT2000P3PSSD8 to run Mojave.

And my second drive is a Team Group MP34 M.2 2280 4TB PCIe 3.0 x4 with NVMe 1.3 3D NAND. And I planned to use it as a scratch drive.

For some reason, I get really great R/W on my Crucial drive when benchmarking (~2300-2400 MBps RW) but the Team drive only gets 600-700 MBps.

I'm struggling trying to troubleshoot the situation.

When I had both these drives in a buddies dual NVME PCIE adapter (I don't remember the name but its controller chip was a ASM2812), both drives register at close to 1500-1800 MBps.

Each drive by itself on my basic 4 lane nvme pcie adapter get ~1500 MBPS.

Is it the adapter?

Do I there something I need to my mac pro to allow BOTH drives to run at 2000-3000 MBps?

I'm at a loss.
 
Background:

I've got a 2009 Mac Pro 4,1 flashed to 5,1 running the latest 144 firmware.

I recently purchased a Highpoint R1104 (Rocket 1104) so that I can utlize the second NVME drive I bought over Christmas.

I am currently using a Crucial P3 Plus 2TB PCIe Gen4 3D NAND NVMe M.2 SSD, up to 5000MB/s - CT2000P3PSSD8 to run Mojave.

And my second drive is a Team Group MP34 M.2 2280 4TB PCIe 3.0 x4 with NVMe 1.3 3D NAND. And I planned to use it as a scratch drive.

For some reason, I get really great R/W on my Crucial drive when benchmarking (~2300-2400 MBps RW) but the Team drive only gets 600-700 MBps.

I'm struggling trying to troubleshoot the situation.

When I had both these drives in a buddies dual NVME PCIE adapter (I don't remember the name but its controller chip was a ASM2812), both drives register at close to 1500-1800 MBps.

Each drive by itself on my basic 4 lane nvme pcie adapter get ~1500 MBPS.

Is it the adapter?

Probably is a combo, blade firmware that does not like the PCIe switch from the Rocket 1104, the PCIe v2.0 of the Mac Pro or even the Mac Pro firmware - difficult to know what really is.

There are several reports of issues like that in the past for different blades and that's the reason we have a list of tested blades that work.


It's a 14 years old Mac, somethings just doesn't work as expected and you have to find the things that do work.

Do I there something I need to my mac pro to allow BOTH drives to run at 2000-3000 MBps?

I'm at a loss.

After checking if there is a firmware upgrade for the blade, you will have to try to find a more compatible combo of blade/adapter.
 
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