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1 Rookie

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17 Posts

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September 18th, 2024 19:07

Download speed to router 260Mbps, router to PC 95Mbps - what issues on Inspiron could cause this

My internet supplier says the download speed I have a contract for 260-270 is reaching my router. But tests show speed from router to desktopis only a third of this.

They say there must be something wrong in the set up of my computer, or something faulty.

I have tried reading articles about this and have been left confused.

Is anyone able to explain what tests, or what I should check to try and work out the problem.

Inspiron 3020, new in January and didn't have this problem to begin with. Specifiactions as the one listed for £949 on this page https://www.dell.com/en-uk/shop/scc/sr/desktops/inspiron-desktops/tower?appliedRefinements=38625


Have used the automated process on Dell web site to download updates since purchase.

NB my router is connected by cable ie NOT wifi. One other cable to tv box.

No other electrical gadgets nearby!

Bewildered.

Thanks

edited to add, was given a new router but problem stayed the same.

9 Legend

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11.8K Posts

September 18th, 2024 20:18

Re: NB my router is connected by cable ie NOT wifi.

download speed capped at 95-100 Mbps is almost always due to a suboptimal ethernet cable even if the cable looks ok to you.  replace the cable w a brand new cat 6 cable is the first thing to do.   I had seen a slightly used ethernet cable drop speed from 860 to 100 Mbps after just a few plug/unplug mating cycles.  replacing w a brand new cable returned speed to 900 Mbps.

(edited)

9 Legend

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11.8K Posts

September 18th, 2024 20:39

here is the full explanation: 

https://www.intel.com/content/www/us/en/support/articles/000058908/ethernet-products/intel-killer-ethernet-products.html

If this is set correctly and your link speed still reads as 100 Mbps, then the issue is almost always an issue with an Ethernet cable, though it could be a few things.

Before troubleshooting any further, check the connection of the Ethernet cable into every piece of networking equipment, as well as your computer. Make sure each cable is labeled Cat 6 or Cat 7. Unplug each Ethernet cable and plug it back in. Make sure that your cable is pressed firmly into the Ethernet jack. You should hear and feel a very audible click sound when the cable is in place. If you do not feel and hear this, then this cable should be considered broken, and you need to replace it.

Even if you believe that your Ethernet cabling is perfectly fine, and even if this cabling worked fine before, swapping it out for another, proven cable, or a brand new Cat 6 cable, will almost certainly solve the issue with the minimum of troubleshooting and headache. This is a very, very common occurrence when troubleshooting Gigabit Ethernet, and it nearly always comes down to one cable being the culprit. Note that this includes all cabling between the machine and the router, including any cabling in before and after any switches, or on the other side of any wall jacks, and behind the wall. However, if you were getting Gigabit using a particular setup and suddenly, with no changes whatsoever, your link speed is now 100 Mbps, then it’s probably only one cable that is currently having issues, and it is likely one that is exposed.

The fastest way to rule out any problems with anything other than cabling is to connect your machine directly into your modem with a single, proven Cat 6 or better Ethernet cable

1 Rookie

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17 Posts

September 18th, 2024 23:04

Double thanks!

I got a new ethernet cable when setting up the Inspiron, but can believe I might not have got top quality.

Will definite try this first before trying to get my head around NIC - which I was baffled by in suggestions that this would need to be adjusted (?) on other threads.

(I had already tried the unplugging cables etc..)

(edited)

10 Elder

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44.4K Posts

September 19th, 2024 00:38

If you have either 13th or 14th Gen Intel CPU in this PC, have you updated to latest BIOS 1.18.0?  This update is supposed to fix Intel's problems with 13th/14th Gen CPUs.  Follow the instructions for Updating the BIOS from BIOS Boot Menu (independent of operating system) on that page. Always safer to update BIOS entirely outside Windows, rather then using SupportAssist or doing it manually yourself inside Windows.

If you have a Killer WiFi card (yes, I meant Killer WiFi) installed, click Start>Run>services.msc and click ok. When that opens, scroll down the list, open each Killer (and xTend, if any) service listed, and change the Startup type to disabled.  Those Killer services can affect ethernet speeds, and you don't need any of them for either ethernet or WiFi. Then close services.msc

If SmartByte software is running (factory installed by Dell), disable or uninstall it so it won't load every time you boot the PC.

Reboot PC when that's all done and see if things improve.

1 Rookie

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17 Posts

September 19th, 2024 15:22

Just to say I am going to send for a better standard of cable rather than picking up some generic one locally as I see suggestion was for G6  or 7. Are shorter ones more reliable? Thanks.

As I am not using WiFi not sure about info about that but will look into. My Dell is only connected via cable.

I did do - or got an automated message to do an update but will check if there has been another update since then (about a month).

But just to add a couple of oddities. Suddenly yesterday evening I was getting the promised speed on my computer.

And again today when I first switched on. But then when running a second test (rather than the one my provider offers, I got a break in my internet connection ie no internet at all and when it came back speed on the computer had dropped from 260 to 94.

Also which I hadn't really looked at before sometimes the light by the ethernet port is green and sometimes orange. Is this significant?

Counter intuitively I seem to get the higher speed when orange rather than green.

Just wondering about the port itself as I found (which I later saw on web sites many others had done) that the hdmi port on a brand new Inspiron was really clichy. In the end I followed a suggestion on a thread I started for that and adpater so as to be able to plug the hdmi cable into the dp port. Since then no problems.

Sorry for non technical language!

9 Legend

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11.8K Posts

September 19th, 2024 16:03

my long cable has no issue going from one floor to another floor while maintaining 850-960 Mbps.

LAN port flashing different color of light is normal.  no worries.

1 Rookie

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17 Posts

September 19th, 2024 16:59

@redxps630​ Thanks - just hoping it turns out to be as simple as getting a better cable.

1 Rookie

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17 Posts

September 19th, 2024 17:36

@IrememberDOS​ Have just seen on another forum that green light indicates port is operational at 1Gbps and amber means operational at 100Mbps.

Another company, ie not Dell, but is this industry standard?

9 Legend

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11.8K Posts

September 19th, 2024 17:59

flash light at LAN port is industry standard.  I do not know the details of this but IT typically uses speed test software for UL DL speed and not differentiate at the LAN port.

10 Elder

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44.4K Posts

September 19th, 2024 20:12

@IrememberDOS  - I only use ethernet, but every time Intel updates the Killer software, my ethernet speed drops because the updates re-enable all Killer (and xTend) services in services..msc. This only matters to you if you have a Killer WiFi card, which is one of the WiFi cards Dell installed in your PC model.  You get Killer software updates via Windows Update regardless of whether an installed Killer WiFi card is used or not. So just look in services.msc to see if any Killer services are listed, or not.

My PC is connected to ethernet with a 6' CAT6 ethernet cable with no problems.  You should be able to check the link speed, the communication speed between your PC and router.  Open Windows Network Connections screen. Click the button that says Ethernet and when that opens, you want to see 1000/1000, which is the max speed the ethernet can communicate with the router. If you're getting 1000/1000 then it's seems unlikely to be a problem on your side and you'll have to discuss further with your ISP (eg, a bum router..?)

My Network Connections screen looks like this (NOTE: "Network 3" is the name of my network connection so yours will say something else.). Just look under Properties for your link speeds.


 

(edited)

1 Rookie

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17 Posts

September 25th, 2024 19:21

Just came back to say problem solved!

It was in fact as suggested that the ethernet cable (which had been ok) for some reason no longer was.

New cable has solved the problem.

And in fact I wouldn't have need to come and ask the question here is my internet providers so called online support and analysis of problems wasn't so cr*p!

ie if it showed that there can be a difference between the speed to the router and the router to the device. And steps you can take to resolve it

But appreciate suggestions and information.

I've certainly learned something.

One of which is never to take the "explanation" of my internet provider as being the best.

Unfortunately, like many others, they have farmed this out to so remote service which employs people, who probably could be competent, but are instead told to only work off a standard crib sheet.

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