F5F Stay Refreshed Power Users Networks Is a 10 Gigabit network adapter really slow at just 2 GBps?

Is a 10 Gigabit network adapter really slow at just 2 GBps?

Is a 10 Gigabit network adapter really slow at just 2 GBps?

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AA_Esser
Member
181
08-23-2026, 07:14 PM
#1
I own a Z590 AORUS XTREME WATERFORCE card with a 10Gigabit adapter, but my internet is slow because the router isn't sending enough data. When I called ATT to check if they were at fault, they said my hardware was the problem. After I upgraded my network card from their official site: https://www.marvell.com/support/downloads.html# it's still just giving me 2Gig. Since I'm on a fiber plan and using Cat8 cables, what else can I try? Thanks!
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AA_Esser
08-23-2026, 07:14 PM #1

I own a Z590 AORUS XTREME WATERFORCE card with a 10Gigabit adapter, but my internet is slow because the router isn't sending enough data. When I called ATT to check if they were at fault, they said my hardware was the problem. After I upgraded my network card from their official site: https://www.marvell.com/support/downloads.html# it's still just giving me 2Gig. Since I'm on a fiber plan and using Cat8 cables, what else can I try? Thanks!

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Fenitis
Member
196
08-23-2026, 08:35 PM
#2
I switched jobs because I moved into networking.
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Fenitis
08-23-2026, 08:35 PM #2

I switched jobs because I moved into networking.

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theTomBomb2
Member
117
08-25-2026, 08:47 AM
#3
And what other equipment? (can the issue be with the network adapter in the other end of the cable? ) How did you test this (detailed)? What (if any) web service used? Tried another (web server or service)? Same result or different? Ok, can you share (any personal info removed) (assuming this is some sort of printable drawing you talking about) ? Reason I ask is because I suspect the way you test may be the reason of lower transmission speed.
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theTomBomb2
08-25-2026, 08:47 AM #3

And what other equipment? (can the issue be with the network adapter in the other end of the cable? ) How did you test this (detailed)? What (if any) web service used? Tried another (web server or service)? Same result or different? Ok, can you share (any personal info removed) (assuming this is some sort of printable drawing you talking about) ? Reason I ask is because I suspect the way you test may be the reason of lower transmission speed.

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grisou47
Member
133
08-29-2026, 03:01 AM
#4
Sorry, I forgot my router is a BGW320 that AT&T gave me for my speed. Is that what you're asking? I used speedtest.net and also checked AT&T U-verse web tester. When AT&T tested it on their side, they said the signal to my PC was fine.
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grisou47
08-29-2026, 03:01 AM #4

Sorry, I forgot my router is a BGW320 that AT&T gave me for my speed. Is that what you're asking? I used speedtest.net and also checked AT&T U-verse web tester. When AT&T tested it on their side, they said the signal to my PC was fine.

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Lottie_
Member
59
08-29-2026, 04:45 AM
#5
It's probably a fake cat8 cable because real ones are super pricey and only used in big data centers with 40G ports. I've never seen them on Amazon; they usually come from specialty stores instead. It might work though, depending if the wires inside are thin. You really just need cat5e to handle 2.5 gig or 5 gig speeds. Normal cat6 can do 10 gig at closer distances. The cable you actually want is cat6a, but since you aren't running at 10 gig anyway, maybe it's okay? Check if the port speed says 2.5G or 5G. What plan did you buy for that? If you open your router and run a speed test from the testing panel inside what will show you how fast you actually get?
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Lottie_
08-29-2026, 04:45 AM #5

It's probably a fake cat8 cable because real ones are super pricey and only used in big data centers with 40G ports. I've never seen them on Amazon; they usually come from specialty stores instead. It might work though, depending if the wires inside are thin. You really just need cat5e to handle 2.5 gig or 5 gig speeds. Normal cat6 can do 10 gig at closer distances. The cable you actually want is cat6a, but since you aren't running at 10 gig anyway, maybe it's okay? Check if the port speed says 2.5G or 5G. What plan did you buy for that? If you open your router and run a speed test from the testing panel inside what will show you how fast you actually get?

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Rhuji
Senior Member
437
09-03-2026, 08:54 PM
#6
My router shows my speed test hitting over 5500 Mbps. It says Port 1 is sending at 500 million Mbps while Ports 2 through 4 are all doing 100 million. Is that the issue you're worried about? I bought a 5GB plan for $180 a month, but my speed test looks way faster than what's listed on the bill.
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Rhuji
09-03-2026, 08:54 PM #6

My router shows my speed test hitting over 5500 Mbps. It says Port 1 is sending at 500 million Mbps while Ports 2 through 4 are all doing 100 million. Is that the issue you're worried about? I bought a 5GB plan for $180 a month, but my speed test looks way faster than what's listed on the bill.

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zebragirlC
Member
115
09-06-2026, 08:57 PM
#7
Testing this usually takes a lot of time because it needs two computers and ports fast enough for 5Gbps. Since the ATT router gets full speed and you are connecting at that rate, checking things becomes difficult. Usually I recommend using a tool like IPERF but you need another computer in your house that can handle 5Gbps and a switch or router with extra ports. Maybe while one device is running a speed test, watch if the other machine is maxing out resources. You might think transferring a file needs lots of CPU power, but it doesn't even save much time. I guess you could try booting a Linux USB drive to test it. Most have a browser built in and drivers for your network card. This helps confirm you don't have broken hardware but it doesn't show if Windows settings are causing the problem. I have an ATT router and they sometimes tell me to upgrade to 2.5G or 5G. If there was more cost difference, maybe I would choose a slower plan like 1Gbps. When it first arrived, they offered 2.5G for about a week. Most websites don't want you using slow speeds; even Steam doesn't really work at 1Gbps. It is hard to find sites that let you download very fast. I don't download much on a daily or weekly basis, so paying $180/month for the fastest plan isn't worth it.
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zebragirlC
09-06-2026, 08:57 PM #7

Testing this usually takes a lot of time because it needs two computers and ports fast enough for 5Gbps. Since the ATT router gets full speed and you are connecting at that rate, checking things becomes difficult. Usually I recommend using a tool like IPERF but you need another computer in your house that can handle 5Gbps and a switch or router with extra ports. Maybe while one device is running a speed test, watch if the other machine is maxing out resources. You might think transferring a file needs lots of CPU power, but it doesn't even save much time. I guess you could try booting a Linux USB drive to test it. Most have a browser built in and drivers for your network card. This helps confirm you don't have broken hardware but it doesn't show if Windows settings are causing the problem. I have an ATT router and they sometimes tell me to upgrade to 2.5G or 5G. If there was more cost difference, maybe I would choose a slower plan like 1Gbps. When it first arrived, they offered 2.5G for about a week. Most websites don't want you using slow speeds; even Steam doesn't really work at 1Gbps. It is hard to find sites that let you download very fast. I don't download much on a daily or weekly basis, so paying $180/month for the fastest plan isn't worth it.

D
dianarose32129
Senior Member
570
09-07-2026, 01:37 AM
#8
Right now, my computer sends me the highest amount of data per second, and I can pull in a lot of big files all at the same time using 5 gigabytes. What specific buttons or choices on my PC control how fast my internet actually gets into my brain?
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dianarose32129
09-07-2026, 01:37 AM #8

Right now, my computer sends me the highest amount of data per second, and I can pull in a lot of big files all at the same time using 5 gigabytes. What specific buttons or choices on my PC control how fast my internet actually gets into my brain?

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RedKickify
Member
225
09-07-2026, 07:26 AM
#9
Maybe those holes in your router are stopping you?
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RedKickify
09-07-2026, 07:26 AM #9

Maybe those holes in your router are stopping you?

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Murica1776
Member
208
09-10-2026, 11:20 PM
#10
How can I verify this problem and get it fixed?
M
Murica1776
09-10-2026, 11:20 PM #10

How can I verify this problem and get it fixed?

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