Enable TRIM for SSDs!

I redid my desktop hackintosh with OC and while I was downloading Xcode, I noticed my aged SATA Samsung 850 EVO SSD was bottlenecking my gigabit internet. It was only giving me 40MB/s write speed. Some write tests confirmed it: read was barely above 400MB/s and write was always under 50MB/s, which is abysmal even for an HDD.

I then remembered this TRIM thing that SSDs need and it turns out macOS only enables TRIM on native SSDs or NVMe SSDs. SATA SSDs have TRIM disabled by default. Had to force enable it and after the reboot, my read and write speeds shot above 500MB/s.

Just thought I’d share this!

submitted by /u/ChinaTercel
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