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Speed not reaching expected LAN performance

Speed not reaching expected LAN performance

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cloudAce6472
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06-12-2016, 09:46 PM
#1
Hello everyone, I’m uncertain whether the problem lies with my motherboard LAN port or with Windows itself. After upgrading to a 1000/100 Mbps internet connection, my PC downloads smoothly (~900 MB/s), but uploading remains slow at around 30 MB/s. When using the same LAN cable to connect my laptop, upload speeds reach full 100 Mb/s. I’ve turned on full 1 GB duplex in the adapter settings, but it didn’t help. Could anyone assist with this issue? Thanks!
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C
cloudAce6472
06-12-2016, 09:46 PM #1

Hello everyone, I’m uncertain whether the problem lies with my motherboard LAN port or with Windows itself. After upgrading to a 1000/100 Mbps internet connection, my PC downloads smoothly (~900 MB/s), but uploading remains slow at around 30 MB/s. When using the same LAN cable to connect my laptop, upload speeds reach full 100 Mb/s. I’ve turned on full 1 GB duplex in the adapter settings, but it didn’t help. Could anyone assist with this issue? Thanks!

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IPS10
Senior Member
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623
06-14-2016, 10:46 PM
#2
We require additional details. What kind of cable do you have—cat5, cat5e, cat6? How are you linking to your router? Are your PC specifications using a separate modem/router or a combined setup?
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IPS10
06-14-2016, 10:46 PM #2

We require additional details. What kind of cable do you have—cat5, cat5e, cat6? How are you linking to your router? Are your PC specifications using a separate modem/router or a combined setup?

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Anselhero
Senior Member
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582
06-16-2016, 03:15 AM
#3
All three concerns appear unnecessary because he already confirmed he can achieve the desired speeds by using the same cable and connecting it to his laptop. If he receives accurate speeds and only the PC changes, the problem likely lies elsewhere—such as the router, cabling, or connection setup. Assuming a download speed of around 1Gbps, his network card should handle more than 30Mbps upload. I think this issue probably relates to Windows or the motherboard (BIOS or hardware). OP, do you have any network-related software installed? For instance, motherboard utilities that offer network optimization, or third-party firewalls like Glasswire? Which network drives are active? Are there built-in Windows drivers available? Drivers from the motherboard manufacturer’s site might also be useful.
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Anselhero
06-16-2016, 03:15 AM #3

All three concerns appear unnecessary because he already confirmed he can achieve the desired speeds by using the same cable and connecting it to his laptop. If he receives accurate speeds and only the PC changes, the problem likely lies elsewhere—such as the router, cabling, or connection setup. Assuming a download speed of around 1Gbps, his network card should handle more than 30Mbps upload. I think this issue probably relates to Windows or the motherboard (BIOS or hardware). OP, do you have any network-related software installed? For instance, motherboard utilities that offer network optimization, or third-party firewalls like Glasswire? Which network drives are active? Are there built-in Windows drivers available? Drivers from the motherboard manufacturer’s site might also be useful.

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