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popular Posted by Meowssi | Staff • Last Saturday
popular Posted by Meowssi | Staff • Last Saturday

BlueRigger Cat 8 Ethernet Cable (40Gbps, RJ45): 15' for $4.31, 30' for $5.39, 50' for $8.09 & More + Free Shipping w/ Prime or on $35+

$4.31

$7.99

46% off
Amazon
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BlueRigger via Amazon [amazon.com] has BlueRigger Cat 8 Ethernet Cable (40Gbps, RJ45) on sale for the prices listed below when you apply promo code HAPPYCABLE. Shipping is free w/ Prime or on orders $35+.

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BlueRigger via Amazon [amazon.com] has BlueRigger Cat 8 Ethernet Cable (40Gbps, RJ45) on sale for the prices listed below when you apply promo code HAPPYCABLE. Shipping is free w/ Prime or on orders $35+.

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16 Comments

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Last Saturday
9,155 Posts
Joined Aug 2018
Last Saturday
TodayOnly
Last Saturday
9,155 Posts
50' round decent price
"SUPERIOR BUILD: Double Aluminum shielded twisted pairs (STP) and 100% pure copper help minimize interference. Snagless design, 26AWG cable thickness, strain-relief boots and 50 micron gold plated RJ45 connectors provide durability and ensure a secure connection"



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1
Last Saturday
858 Posts
Joined Nov 2017
Last Saturday
181day
Last Saturday
858 Posts
Are these actually cat 8?
1
Last Saturday
168 Posts
Joined Jan 2015
Last Saturday
yeuem4eva
Last Saturday
168 Posts

Our community has rated this post as helpful. If you agree, why not thank yeuem4eva

I bought a lot of Cat 7 even Cat 8 cables from other names, they are actually slower than Monoprice 30AWG (SlimRun) Cat 6A, so don't trust the numbers
Last edited by yeuem4eva April 19, 2025 at 09:44 AM.
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1
Last Saturday
115 Posts
Joined Oct 2015
Last Saturday
Lulabby
Last Saturday
115 Posts
Quote from yeuem4eva :
I bought a lot of Cat 7 even Cat 8 cables from other names, they are actually slower than Monoprice 30AWG (SlimRun) Cat 6A, so don't trust the numbers
How can you test if they are faster or slower?
Last Saturday
647 Posts
Joined Feb 2005
Last Saturday
ravi105
Last Saturday
647 Posts
Quote from Lulabby :
How can you test if they are faster or slower?

You speak into one end and calculate the time it travels to the other end.
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Last Saturday
146 Posts
Joined Mar 2023
Last Saturday
EagerWinter9500
Last Saturday
146 Posts

Our community has rated this post as helpful. If you agree, why not thank EagerWinter9500

Quote from Lulabby :
How can you test if they are faster or slower?

Throughput test with a tool like iperf3.
1
Last Saturday
1 Posts
Joined Oct 2022
Last Saturday
Bac2652
Last Saturday
1 Posts
Quote from 181day :
Are these actually cat 8?

Not even close.

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Last Saturday
17 Posts
Joined Feb 2017
Last Saturday
sinamda2
Last Saturday
17 Posts
Quote from EagerWinter9500 :
Throughput test with a tool like iperf3.

So do you use their app or a software? Is it free? Is there any tutorial on it?
3
Last Saturday
146 Posts
Joined Mar 2023
Last Saturday
EagerWinter9500
Last Saturday
146 Posts
Quote from sinamda2 :
So do you use their app or a software? Is it free? Is there any tutorial on it?

It is free software. You can run it on Windows and Linux. It's a pretty simple command line tool, I think you just need the -s flag for the receiving side and -c for the sending side. Yes, you need to run iperf3 on both ends, so you will need two devices.
Expert
This user is an Expert in Home & Home Improvement
Last Sunday
4,593 Posts
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Last Sunday
wherestheanykey
Expert
This user is an Expert in Home & Home Improvement
Last Sunday
4,593 Posts
Quote from 181day :
Are these actually cat 8?

CAT7 and CAT8 are loose standards, so the answer is yes and no.

CAT8 is rated to carry 2000Mhz over 36m, which isn't a significant feat anymore with how well cable production has gotten. There are plenty of overkill CAT6A cables that can perform just as well by this metric.

Assuming you're only interested in the 40Gbps metric, then no, this isn't going to come close.

Though it's also important to note that anything above CAT5e is always going to be a crapshoot, especially when taking it over long runs. It's also largely dependent on your hardware.

There's certainly nothing wrong with using CAT7/8 even for lower bandwidths, as they're inherently built better (more EMI shielding and twists) and don't cost significantly more, aside from the fact that they're more delicate and thicker (thus harder to run).

But if you really need 10Gbps or better connections, you should be using fiber.
Last Sunday
106 Posts
Joined Jun 2020
Last Sunday
RlndV
Last Sunday
106 Posts
No such things as Cat7 or Cat8 cables. It's all made up bull crap to take money out of your wallet.

Just stick to cat6/6a depending on your need.
3
Last Sunday
10 Posts
Joined Feb 2017
Last Sunday
joeabbatiello
Last Sunday
10 Posts
Quote from ravi105 :
You speak into one end and calculate the time it travels to the other end.

Nice!
Last Sunday
304 Posts
Joined Apr 2008
Last Sunday
sr27
Last Sunday
304 Posts
Quote from sinamda2 :
So do you use their app or a software? Is it free? Is there any tutorial on it?
Let me tell you about something called Google to ask easy questions.
3
Expert
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Last Sunday
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Last Sunday
wherestheanykey
Expert
This user is an Expert in Home & Home Improvement
Last Sunday
4,593 Posts
Quote from RlndV :
No such things as Cat7 or Cat8 cables. It's all made up bull crap to take money out of your wallet.

Just stick to cat6/6a depending on your need.

CAT7 isn't standardized and fully certified (it overlaps with CAT6A), but CAT8 actually is.

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Last Sunday
106 Posts
Joined Jun 2020
Last Sunday
RlndV
Last Sunday
106 Posts
Quote from Lulabby :
How can you test if they are faster or slower?

You cannot test if something is rated for 40 gigabit if you don't have 40 gigabit network hardware.

You also can not have 40 gigabit hardware that doesn't use fiber optic cable (an entirely different connector altogether from the "Ethernet" that everyone usually thinks of).

Either way, I got a bridge to sell y'all if you are interested.
4

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