Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
Heads up, this deal has expired. Want to create a deal alert for this item?
expired Posted by Meowssi | Staff • Apr 19, 2025
expired Posted by Meowssi | Staff • Apr 19, 2025

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
16 Comments 12,967 Views
Visit Amazon
Good Deal
Save
Share
Deal Details
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+.

Example Deals:
Product Info
Community Notes
About the Poster
Deal Details
Product Info
Community Notes
About the Poster
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+.

Example Deals:

Community Voting

Deal Score
+15
Good Deal
Visit Amazon

Price Intelligence

Model: BlueRigger CAT8 Flat Ethernet Cable - 15FT (40Gbps, 2000MHz, RJ45) CAT 8 High Speed Internet Network LAN Patch Cord - for Gaming, Router, Modem, PC

Current Prices

Sort: Lowest to Highest | Last Updated 5/24/2025, 03:08 PM
Sold By Sale Price
Amazon$5.49
Leave a Comment
To participate in the comments, please log in.

16 Comments

Sign up for a Slickdeals account to remove this ad.

Apr 19, 2025
9,164 Posts
Joined Aug 2018
Apr 19, 2025
TodayOnly
Apr 19, 2025
9,164 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"



[IMG]https://static.slickdealscdn.com/images/smilies2/popcorn.gif[/IMG]
1
1
Apr 19, 2025
864 Posts
Joined Nov 2017
Apr 19, 2025
181day
Apr 19, 2025
864 Posts
Are these actually cat 8?
1
Apr 19, 2025
168 Posts
Joined Jan 2015
Apr 19, 2025
yeuem4eva
Apr 19, 2025
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.
1
1
Apr 19, 2025
116 Posts
Joined Oct 2015
Apr 19, 2025
Lulabby
Apr 19, 2025
116 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?
Apr 19, 2025
659 Posts
Joined Feb 2005
Apr 19, 2025
ravi105
Apr 19, 2025
659 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.
13
4
Apr 19, 2025
152 Posts
Joined Mar 2023
Apr 19, 2025
EagerWinter9500
Apr 19, 2025
152 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
Apr 19, 2025
1 Posts
Joined Oct 2022
Apr 19, 2025
Bac2652
Apr 19, 2025
1 Posts
Quote from 181day :
Are these actually cat 8?

Not even close.

Sign up for a Slickdeals account to remove this ad.

Apr 19, 2025
17 Posts
Joined Feb 2017
Apr 19, 2025
sinamda2
Apr 19, 2025
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
Apr 19, 2025
152 Posts
Joined Mar 2023
Apr 19, 2025
EagerWinter9500
Apr 19, 2025
152 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
Apr 20, 2025
4,664 Posts
Joined Oct 2013
Apr 20, 2025
wherestheanykey
Expert
This user is an Expert in Home & Home Improvement
Apr 20, 2025
4,664 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.
Apr 20, 2025
113 Posts
Joined Jun 2020
Apr 20, 2025
RlndV
Apr 20, 2025
113 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
Apr 20, 2025
10 Posts
Joined Feb 2017
Apr 20, 2025
joeabbatiello
Apr 20, 2025
10 Posts
Quote from ravi105 :
You speak into one end and calculate the time it travels to the other end.

Nice!
Apr 20, 2025
318 Posts
Joined Apr 2008
Apr 20, 2025
sr27
Apr 20, 2025
318 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
This user is an Expert in Home & Home Improvement
Apr 20, 2025
4,664 Posts
Joined Oct 2013
Apr 20, 2025
wherestheanykey
Expert
This user is an Expert in Home & Home Improvement
Apr 20, 2025
4,664 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.

Sign up for a Slickdeals account to remove this ad.

Apr 20, 2025
113 Posts
Joined Jun 2020
Apr 20, 2025
RlndV
Apr 20, 2025
113 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

Popular Deals

View All

Trending Deals

View All