r/techsupport Oct 07 '22

PC capping Ethernet speed Open | Networking

SOLVED. Hello! When I plug my laptop into the same internet as my pc and do a speed test I reach 450 Mbps but when I do the same thing with my pc I only reach 90-95 Mbps. Anyone know what I can do?

104 Upvotes

57 comments sorted by

40

u/TetoGu Oct 07 '22

Whats the rating on your ethernet port?

15

u/boxedbypipez Oct 07 '22

I have a TUF GAMING B460M-PLUS motherboard, it says something about SATA 6Gbps. Is that what you were asking about?

35

u/TetoGu Oct 07 '22

So that Board seems to have a gigabit port. That might not cause the problem. Try looking for the speed in network settings, as another user suggested.

43

u/TorontoRin Oct 07 '22

Just a FYI. SATA 6Gpbs is just the ports for data transfers from your mobo to storage drives.

30

u/Sladderdazk Oct 07 '22

Are you unplugging the network cable from the desktop and put it in the laptop?
I ask because if you use different cables / ports in the router etc then that might be the issue.

  1. Faulty network cable (Gets limited to 100mb if it's crimped incorrect or damaged)
  2. Only some ports in the router supports 1gb and the rest 100mb, not that common but they do exist.
  3. Any other switches or network coupler between the router and desktop, that equipment might only be rated for 100mb.

13

u/Elvith Oct 07 '22

Also there are some routers, that have all ports rated 1Gbps, but the default config puts them in energy saving mode which limits them to 100Mbps unless manually changed

5

u/blendzeqiri13 Oct 07 '22 edited Oct 07 '22

How can i change that. My pc gets 100mbs through Ethernet but im pretty sure my my contract has a higher speed. Also when downloading stuff it only does 10mb/s Edit im sure its not the cable. I checked and i have a cat 5e which is that but if it could be the cable i can change it for a cat 6. Reason i am not doing it is cuz its like 3 meters long and i am currently using it for my ps4. My cat5e cable is like a meter and that is plenty.

4

u/Elvith Oct 07 '22

On my router: Login, Network settings, LAN settings and then switch every port to "Power mode"

But it depends on the router.

64

u/boxedbypipez Oct 07 '22

Thank you to all the people who tried to help me! I was being lazy and didnt realise I used 2 different cables (in my defense they were the same color). 1 of them were caped at 100Mbps while the other one was not. But atleast I solved it.

11

u/TetoGu Oct 07 '22

Glad it works now! :)

2

u/BppnfvbanyOnxre Oct 08 '22

Been caught before with a cable with an intermittent problem. Eventually found it and binned it. I had my NAS checking and reporting if its LAN speed had dropped so I knew when to intervene.

-3

u/skykoz Oct 07 '22

Why would someone use a cable that is capped at 100 mbps over a cable that is capped at 1gb?

13

u/sirreldar Oct 07 '22

Because there are different ratings/standards of cabling and before gigabit (1000mbps) it was only 100.

Those cables are not obsolete yet. They are cheaper to produce since there are fewer physical pairs inside the wire, so they still have a very common use case.

If you want to read more, just read about cat5 vs cat6 Ethernet cable: https://www.cdw.com/content/cdw/en/articles/hardware/cat5-vs-cat6-ethernet-cables.html

2

u/MystikIncarnate Oct 07 '22

Okay, but not really. The cat 5/5e/6/6a specification lists 4 pairs (8 wires) for all standards.

The pinch is that 10/100 only made use of 2 pairs. The other 2 were eventually used in early Poe, and later utilized for faster speeds.

Cheap companies that don't give any craps about the standards made cables with only 2 pairs to save money. They worked at 10/100, but won't work for Poe or anything faster than 100. Even cat 5 cable at a short enough length, can carry 1000mbps traffic as long as it's wired to spec.

So, it basically boils down to cheap companies trying to save money by giving you a cut down, non-standard cable. I've seen 2 pair "Ethernet" bundled with everything from modems to gaming consoles.

-2

u/[deleted] Oct 07 '22

When you have the capacity but are lazy and hope others will solve it for you.

(-_-)

8

u/JMurray1121 Oct 07 '22

Are you using the same cable for both computers? If not, try the same cable that you used for your laptop in your PC

-2

u/boxedbypipez Oct 07 '22

i am using the same cable

7

u/xadeCS Oct 07 '22

Sounds like you could be using a CAT5 ethernet cable. Those only go up to 100Mbps. If you're using that one, try switching to a CAT5E or CAT6 cable.

7

u/o_herman Oct 07 '22

Check if your desktop is gigabit or fast ethernet. Sounds like your desktop is only fast ethernet, which can only give 100 mbps. Gigabit has 1000 mbps.

5

u/boxedbypipez Oct 07 '22

how do I check that?

4

u/o_herman Oct 07 '22

Device manager, under network adapters

3

u/boxedbypipez Oct 07 '22

it supports 1 Gbps

11

u/o_herman Oct 07 '22

Next, check your connection uplink. You will know that through network adapter settings. It is possible for a gigabit network adapter to run at fast ethernet mode if something is wrong with the cable.

3

u/TorontoRin Oct 07 '22

Can you describe the layout for your connections for. Laptop to router and pc to router? I want to know if you are using an indirect connection to the modem/router.

2

u/FrancoVFX Oct 07 '22

you can give me those speeds. lmao

4

u/Liminalitys Oct 07 '22

Try a new cable. This is the answer.

2

u/TVOGamingYT Oct 07 '22 edited Oct 07 '22

Did you install a virtual machine, Hamachi, or anything that would register a new network adapter?

If you did, then that can be the issue. You can try running these commands in windows command prompt (make sure you are admin).

Type this in: bat netsh int tcp set global autotuninglevel=disabled

Then restart your pc. Once you restart, open up command prompt again as admin. Type this in now: cmd netsh int tcp set global autotuninglevel=normal

This should fix the issue if it has something to do with windows or its drivers.

1

u/Long-Ad-7412 Oct 07 '22

Your WiFi Router may have a Power saving setting. In Fritzbox for example it is called green mode and can be configured for each LAN port, so that it only transports 100mbit instead of 1gbit

1

u/stormfor24 Oct 07 '22

What standard is the ethernet cable?

1

u/zugman Oct 07 '22

A lot of cheaper routers only have 100Mbit LAN ports despite having Wi-Fi that runs at higher speeds. What model router do you have?

1

u/iceseayoupee Oct 08 '22

Hey, I have the same problem but the problem is I dont know the brand or model of my cable but I do know the router name which is a Huawei "EG8145V5". I have tried to speed up my internet in the past but it just ends up not working so I just leave it at 100mbps

1

u/xBishopz Oct 07 '22

I used to have an issue where if I was hard wired and connected to the wifi at the same time, it was like it was defaulting to the wifi whenever I tested things. When turning wifi off my speed stabilized, maybe a similar situation if you haven't resolved it already.

1

u/Soft_Ad7380 Oct 07 '22

Figure out what NIC / Ethernet adaptor you have. Sounds like you need to replace your Nic possibly.

1

u/jazzofusion Oct 08 '22

It's prob your laptops limits. I simply updated my Wi-Fi card and viola! Just do some homework beforehand.

0

u/SirKlip Oct 07 '22

You will mot likely find your Network card is only rated for 100mb Speed

Do this to find out

Select the Start  button, then select Settings  > Network & Internet > Properties Block

in the new window look for Link Speed
Does it say 1000mb or 100mb

2

u/boxedbypipez Oct 07 '22

link speed says 1000Mb, i went into properties on my ethernet connection and changed my Speed & Duplex to Auto Negotiation

-4

u/SirKlip Oct 07 '22

try a speedtest at
Fast.com

Do you have Antivirus isntalled?

that can bottleneck speeds

1

u/Steelspy Oct 07 '22

try a speedtest at

Fast.com

I really wish people would stop suggesting fast.com

Fast.com is problematic. They are a netflix server. If your ISP throttles your streaming speeds (as some wireless plans do) you won't get accurate information. Fast.com is really only practical if you are seeking to test your streaming speeds.

In no particular order, I suggest one or all of the following.

https://speedof.me/

https://www.speedtest.net/

https://testmy.net/

5

u/IsThisGlenn Networking Expert Oct 07 '22

Fast.com is problematic. They are a netflix server. If your ISP throttles your streaming speeds (as some wireless plans do) you won't get accurate information.

That's like the whole point of fast.com... if you happen to have issues with streaming Netflix and speedtest.net shows you having your full speeds then you can use fast.com to call your ISP out on their bullshit for capping streaming speeds, which is illegal in the EU.

6

u/Steelspy Oct 07 '22

If fast.com had something stating that on their page, I wouldn't disparage them. In my experience, fast.com confuses the inexperienced user by not clearly stating what they are testing.

They aren't a speed test, but a streaming speed test.

0

u/SirKlip Oct 07 '22 edited Oct 07 '22

Apologies.
Comment moved

2

u/IsThisGlenn Networking Expert Oct 07 '22

I think you answered the wrong person :) should be the one above me.

-2

u/Crimtide Oct 07 '22 edited Oct 07 '22

https://speedof.me/

https://www.speedtest.net/

https://testmy.net/

Literally all shit websites that are all way the hell off.

Speedof shows my speed as 45 Mbps rofl.. I am on 1 Gbps fiber..

Speedtest is completely full of shit testing servers and providers that cap incoming connections, again, providing less accurate results.. it will auto connect you to a server with high utilization or capped limitations or other routing issues that slow speeds and yield how latency results. You can get a good server to test on there, but you have to search through the list til you find an accurate one.

testmy thinks I have a 150 Mbps connection..

Meanwhile... fast.com shows my full gig speeds.. your own statement about being throttled or something disproves the point you are trying to make.. if there was a connection issue, somewhere, somehow, it would be shown on fast.com ... if there was no issue, you would see your proper subscribed speeds.. fast.com isn't just for "testing streaming speeds" its literally your entire connection.

-1

u/SirKlip Oct 07 '22

I wasn't suggesting it as a Correct judge of his actual internet speedThis issue was not a problem with his internet speed.

I am lazy and fast.com is easier to type than speedtest.net

The current case only need his speed to exceed 95mb

Would Fast.com Achieved that? YES

I wish you would keep your opinions to yourself

6

u/Steelspy Oct 07 '22

I wish you would keep your opinions to yourself

Sorry, but you're on reddit. If being corrected or educated bothers you, you might refrain from commenting here.

3

u/inn0ichi Oct 07 '22

Just use Google's speed test. Gigachad

1

u/boxedbypipez Oct 07 '22

i do have antivirus installed.

1

u/SirKlip Oct 07 '22

what speed do you get at
fast.com

?

1

u/boxedbypipez Oct 07 '22

90Mbps

1

u/SirKlip Oct 07 '22

What device is your Network cable plugging into.
A router/modem from your ISP or a Switch/Hub?

1

u/boxedbypipez Oct 07 '22

router, but im using the same router and cable on my laptop. But I get way better speed on that

1

u/SirKlip Oct 07 '22

Another thing you can try is uninstalling and reinstalling hte network card.
this can be a bit tricky though

Do you know the device manager in windows?

1

u/boxedbypipez Oct 07 '22

I solved it thx for the help.

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