https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Sat, 04 Apr 2026 10:04:37 +0000 Wed, 24 Feb 2021 16:05:39 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=18213 https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ https://forum.asrock.com/forum_posts.asp?TID=18213&PID=84258&title=b460-phantom-gaming-4-pcie-speeds#84258 Author: Xaltar
Subject: 18213
Posted: 24 Feb 2021 at 4:05pm

No, looking at the images on your product page the PCIe3 slot is only electrically
wired as an x4 slot. This is common with most mid tier intel chipset boards and
I believe is a stipulation from intel to ensure that only their top tier boards,
that are licensed for SLI, can use x8 + x8 configs. There have been some boards
that permit x8 + x8 in the mid range but they tend to be expensive and use PCIe
lane multipliers (PLX chip).

So to clarify, the PCIe3 slot is an x4 slot. It is an x16 physical slot that is
wired as an x4 slot. You can see how the pins in the slot only extend to about
a third of the length of the slot vs PCIe1 which has pins all the way to the end.

Edited by Xaltar - 24 Feb 2021 at 4:06pm]]> Wed, 24 Feb 2021 16:05:39 +0000 https://forum.asrock.com/forum_posts.asp?TID=18213&PID=84258&title=b460-phantom-gaming-4-pcie-speeds#84258 https://forum.asrock.com/forum_posts.asp?TID=18213&PID=84250&title=b460-phantom-gaming-4-pcie-speeds#84250 Author: Bobat
Subject: 18213
Posted: 24 Feb 2021 at 4:09am

I have a B460 Phantom Gaming 4, which has 2 x16 PCIe slots. The manual states that the PCIe1 operates at x16 if PCIe3 is empty, and PCIe1 operates at x16 and PCIe3 operates at x4 if both slots are used.

Is this true even if the card in PCIe1 is only an x8 card? I was hoping PCIe1 and PCIe3 could both operate at x8 if both were only x8 cards.]]> Wed, 24 Feb 2021 04:09:11 +0000 https://forum.asrock.com/forum_posts.asp?TID=18213&PID=84250&title=b460-phantom-gaming-4-pcie-speeds#84250