<< Solved >> SSDs running at 3 Gigabit

[GiovanniJou]

Hi all! I believe this is my first post here on the forums, but boy have I received a lot of guidance on going all in on my Hackintosh build.

I've been using it for a month or so now after purchasing a RX580 8GB for that native support. It is perfectly stable and edits video wonderfully.

I have however noticed that my SSD read and write speeds are slower than they used to be on Windows, after doing some digging I found that the "Negotiated Link Speed" for both my SSDs are 3 Gigabit. I tried searching online but can't really find guidance on this. I have enabled trim using trimforce. I do know that both the SSDs support 6 Gigabit SATA III and that the motherboard does as well - but performance on OS X seems consistent with SATA II speeds.

System specs:
MSI H81M-P33
i7 4770
16GB 1600MHz
Gigabyte Aorus RX580 8GB
Running 10.14.4

SSDs:
500GB WD Blue (OS Disk)
240GB WD Green (Scratch Disk)

My internal 4TB Seagate HDD is running at 6 Gigabit and performing as expected.

See the screenshots below

Any ideas?

 

[BreBo]

I do know that both the SSDs support 6 Gigabit SATA III and that the motherboard does as well - but performance on OS X seems consistent with SATA II speeds.

You only have two SATAIII ports.
https://www.msi.com/Motherboard/H81M-P33/Specification

On-Board SATA

• SATAIII controller integrated in Intel® H81 chipset
- Up to 6Gb/s transfer speed.
- Supports two SATAIII ports (SATA1~2) by H81

• SATAII controller integrated in Intel® H81 chipset
- Up to 3Gb/s transfer speed.
- Supports two SATAII ports (SATA3~4) by H81

 

[GiovanniJou]

Oh my really? I'll switch the cables around and check it out. Thanks!

Should have probably started with that eh.

 

[GiovanniJou]

It was indeed as simple as that! Thanks!