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expiredVioletHaddock489 | Staff posted Nov 23, 2023 08:05 AM
expiredVioletHaddock489 | Staff posted Nov 23, 2023 08:05 AM

Amazon: UGREEN Cat 8 Ethernet Cable 20FT $8.02 + Free Shipping w/ Prime

$8.02

$16

49% off
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Amazon [amazon.com] has UGREEN Cat 8 Ethernet Cable 20FT on sale for $8.02 w/ code 2764PXZW. Shipping is free for Prime members. Offer ends 12/4.
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Amazon [amazon.com] has UGREEN Cat 8 Ethernet Cable 20FT on sale for $8.02 w/ code 2764PXZW. Shipping is free for Prime members. Offer ends 12/4.

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Jan 08, 2024 02:50 PM
2,103 Posts
Joined May 2011
pechangoJan 08, 2024 02:50 PM
2,103 Posts
Quote from norris2930 :
Cat 8 should have higher twists and better copper. Lower resistance should be something that if you use for PoE it will save you energy and money in powering devices. I cannot speak to the quality of this brand or product.
While that may be true in theory, there is no real life benefit for 99% of applications where this will matter.

Cat6 cables are still a much better option for most applications.
Jan 08, 2024 03:35 PM
96 Posts
Joined Nov 2015
VN_LocJan 08, 2024 03:35 PM
96 Posts
Not much use for Cat8 (40Gbps). You need a 40Gb network adapter and 40Gb network switch/router for Cat8 speed between devices 😂 . Most people only have 1Gb equipment. There is no benefit.
Last edited by VN_Loc January 8, 2024 at 07:51 AM.
Jan 08, 2024 03:40 PM
1,950 Posts
Joined Aug 2003
odie5533Jan 08, 2024 03:40 PM
1,950 Posts
UGREEN is one of the only companies I'd trust to actually make these.

Most home networks would be fine with Cat 5e which works up to 2.5gbps. You will not get better speeds with this. 99% of people won't have a use for Cat 8 right now.
Jan 08, 2024 03:51 PM
1,035 Posts
Joined Nov 2010
DVDxRJan 08, 2024 03:51 PM
1,035 Posts
Quote from irish2003 :
Does anyone have experience with these? Will any beyond the 3' range reach their advertised speeds?
Zero chance that flat cable would be capable of doing 40Gb/s. I'd be shocked if any of them could honestly. However since there is not really any equipment with 40Gb/s 8P8C ports it's not a big deal. I'm sure they will all do 1gb and probably 10gb/s over shorter distances (iffy for the 20' flat cable though).
Jan 08, 2024 04:15 PM
66 Posts
Joined Nov 2023
BeautifulLumber1299Jan 08, 2024 04:15 PM
66 Posts
Quote from Adelley :
Should have bought it in 2021 for $11.6k. That inflation
Only 1 left in stock - order soon!
Jan 08, 2024 04:15 PM
27 Posts
Joined Dec 2015
FrozenRosesFXJan 08, 2024 04:15 PM
27 Posts
Jan 08, 2024 04:36 PM
1,237 Posts
Joined Jul 2009
ViciousXUSMCJan 08, 2024 04:36 PM
1,237 Posts
If you want 40gb go fiber not copper.
Especially at any decent length.

My new desktop uses a 10gb RJ45 Ethernet connection and I have it working fine with a SFP+ RJ45 module and a "Cat7" cable. but all my server and stuff use Fiber and it was actually cheaper to get fiber stuff than copper.

I can see in the near future with people getting faster than 1gb ISP speeds and multi gig wireless access points that you will start to have a use for RJ45 multigig connections, but all of those are still 10gb or under and your going to want to do a custom run, not buy a premade cable.

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Jan 08, 2024 06:17 PM
512 Posts
Joined May 2019
E_M__Jan 08, 2024 06:17 PM
512 Posts
If you're looking for couplers, just buy RJ45 Cat6 Keystone couplers and get way more for the price.

10 Pack for <$10. [amazon.com]
Jan 08, 2024 06:24 PM
143 Posts
Joined Nov 2006
ArnoldstrifeJan 08, 2024 06:24 PM
143 Posts
Quote from norris2930 :
Cat 8 should have higher twists and better copper. Lower resistance should be something that if you use for PoE it will save you energy and money in powering devices. I cannot speak to the quality of this brand or product.
Copper is Copper until it isn't (like CCA). Copper in CAT8 is the same as Copper in Cat 6 except for the size. But CAT8 allows for smaller AWG(size). Thinner copper allows for tighter twist and smaller cables all of which are beneficial in a Datacenter, where real Cat8 is actually design to be use in to achieve it's high throughput.

So CAT8 can actually be worse for PoE. The only real metric you should use if you're concerned about PoE efficiency is wire gauge, and distance (Also bundle size if you're running a lot together). But if you follow the spec then it doesn't matter. I Have POE++ (90watt) going over CAT5e to 4 security cameras at Gigabit speeds.
Jan 08, 2024 06:45 PM
9,308 Posts
Joined Mar 2008
mat2000Jan 08, 2024 06:45 PM
9,308 Posts
Gonna hold off and wait for Cat10e to come out .. any day now ..

Honestly fraudulent claims of cat7, cat8 cables on products sold on Amazon left and right ..

super thin conductors ..

not good for PoE
Jan 08, 2024 07:28 PM
354 Posts
Joined Nov 2008
psychocabbageJan 08, 2024 07:28 PM
354 Posts
holding out for the cat15 cables...if that becomes a thing
Jan 08, 2024 08:06 PM
1,589 Posts
Joined Oct 2010
throllyJan 08, 2024 08:06 PM
1,589 Posts
CAT8 are meant for datacenters, CAT6A would be the most one needs for residential.
Jan 08, 2024 08:13 PM
60 Posts
Joined Nov 2010
mspielmanJan 08, 2024 08:13 PM
60 Posts
Buying CAT8 for residential/SOHO is not just stupid; it's potentially harmful as a crappily constructed CAT8 cable can actually make things worse.

Unless you're doing something like video editing off a NAS, you don't need beyond CAT5/6 with gigabit hardware.
Jan 08, 2024 08:44 PM
5,702 Posts
Joined Nov 2004
dealmonkeyJan 08, 2024 08:44 PM
5,702 Posts
Take a look at this video. Newer standards are not always better for components that weren't designed for that standard. Plus the quality of the cable matters. https://youtu.be/r7pW2Pz2h10?si

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Jan 08, 2024 09:08 PM
647 Posts
Joined Feb 2009
EarthwormjimJan 08, 2024 09:08 PM
647 Posts
Very thin wire, do not buy, completely overpriced for the amount of copper you are getting.


From the Q/A section:
Quote :
The AWG specification is 26AWG for the Cat 8 Ethernet cable whose length is 10 to 20 meters, while the cable from 1 to 5 meters' is 30AWG.

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