First time post here, so hopefully someone can help.
I have an SN850 1TB setup as my OS drive in M2_1. All onboard devices like audio and wifi are disabled in BIOS.
I’m only getting about 3100 write speeds, fluctuating very slightly but obviously far lower than expected.
I’m running a 5950x, with an MSI MEG X570 Godlike on BIOS 1.D1. Latest AMD chipset drivers. The 850 itself is on the very latest firmware, due to go to the app later this week I believe but downloadable now.
I’ve read that M2_1 being chipset could mean the lanes are being throttled perhaps and the write speed is definitely, consistently about half or so of what it should be.
Prior to this going in, I had a Samsung 980 Pro 500GB that was working just fine until about a month ago after a firmware update, where the write speeds dropped to about 1200, about 25% of expected and nothing from that side of support was worth the effort.
Additionally, I have another 850 1TB in M2_3 and that’s operating just fine, with expected writes.
Does anyone have any ideas? On the surface, it feels M2 slot and driver/software/firmware in nature and that sort of bears out with the M2_3 slot operating correctly.