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?