ASRock Forums : x399 2950x PCIe settings for LSI HBA

ASRock Forums : x399 2950x PCIe settings for LSI HBA https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Mon, 20 Apr 2026 19:10:36 +0000 Sun, 16 Sep 2018 04:34:41 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=9696 <![CDATA[ASRock Forums]]> https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ <![CDATA[x399 2950x PCIe settings for LSI HBA : I have been able to get my system...]]> https://forum.asrock.com/forum_posts.asp?TID=9696&PID=56198&title=x399-2950x-pcie-settings-for-lsi-hba#56198 Author: blurb2m
Subject: 9696
Posted: 16 Sep 2018 at 4:34am

I have been able to get my system to function pretty well since last nights build but my LSI 9211-8i HBA card is running VERY slow. I'm getting 8.7MB/s write speeds.

I am trying to find any information I can on the PCIe Slot Configuration and the different modes.

x399 Taichi

Threadripper 2950x

32GB GSkill 3200 (B-Die) RAM Dual Channel

I have a GTX 1050 in Slot 1

LSI 9211-8i in Slot 2 (Card is x8 PCIe 2.0

BIOS Config: Advanced/AMD PBS

PCIe x16 Switch - Auto

Promontory PCIe Switch - Auto

NVMe RAID mode - Disabled

PCIe Slot1 Configuration - x16 Mode

PCIe Slot2 Configuration - x8 Mode

PCIe Slot4 Configuration - x16 Mode

PCIe Slot5 Configuration - x8 Mode

What is the x4x4 Mode on Slot2?

]]> Sun, 16 Sep 2018 04:34:41 +0000 https://forum.asrock.com/forum_posts.asp?TID=9696&PID=56198&title=x399-2950x-pcie-settings-for-lsi-hba#56198