Not getting new fast internet speed
Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=41814
Printed Date: 19 Jul 2025 at 6:26pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Not getting new fast internet speed
Posted By: Mike99
Subject: Not getting new fast internet speed
Date Posted: 05 Jun 2024 at 7:15am
I recently upgraded my cable internet speed from 800Mbps download to 1200Mbps.
But my download speed has not increased. It used to typically be 940Mbps and still is. However the upload speed has increased from 24 to 42 which seems correct.
The cable company says everything appears correct on their end.
The B760M Pro RSD4 mobo manual states it has a 2.5Gbps LAN. The modem/Gateway states it is 2.5Gbps. And I'm using a cat6 Ethernet cable to connect to a Windows 10 PC.
I changed one of the Network Interface Card Setting speed settings that I saw mentioned but it made things worse.
Any suggestions would be appreciated,
Thanks
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Replies:
Posted By: johnukguy
Date Posted: 07 Jun 2024 at 5:47pm
This makes no sense. How on earth is only getting around 42 Mbps upload speed on a 1200 Mbps line normal? Unless you meant to type something else? For around a gig speed connection around 940 may indeed be normal. That's what I get on gigabyte Fiber, upload and download. One thing you can try is to check to see if you have Windows autotune enabled and then either disable or enable it and see if that makes a difference. Open an elevated command prompt and type in:
netsh interface tcp show global.
See if Receive Windows Auto-Tuning Level reads normal. If it doesn't and isn't enabled, then you can enable it by typing in:
Enable: netsh int tcp set global autotuninglevel=normal
If you want to try disabling Windows autotune, then type in:
Disable: netsh int tcp set global autotuninglevel=disabled
Reboot after each change and retest your speeds.
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Posted By: M440
Date Posted: 07 Jun 2024 at 7:31pm
This only gives you the negotiated speed of your current network configuration (hence your ethernet port must be connected). The speed indicated also depends on the cable and the other end of the connection. This does NOT give the max supported speed of the NIC on your PC. For that, you need to look under Supported link modes also shown in ethtool.
mm@desktop ~
??ethtool enp8s0
Settings for enp8s0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
2500baseT/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: Yes
Supported FEC modes: Not reported
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
2500baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Advertised FEC modes: Not reported
Link partner advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
1000baseT/Full
Link partner advertised pause frame use: Symmetric
Link partner advertised auto-negotiation: Yes
Link partner advertised FEC modes: Not reported
Speed: 1000Mb/s
Duplex: Full
Auto-negotiation: on
master-slave cfg: preferred slave
master-slave status: slave
Port: Twisted Pair
PHYAD: 0
Transceiver: external
MDI-X: Unknown
netlink error: Operation not permitted
Link detected: yes
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you can try forcing the 2,5gbs speed, but if it's not hardware supported (cables, router) it wont work
sudo ethtool -s enp8s0 speed 2500 duplex full |
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asrock b650m-hdv/m.2, ryzen 7700x@85watt, arch/kde
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