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expired Posted by VioletHaddock489 | Staff • Nov 23, 2023
expired Posted by VioletHaddock489 | Staff • Nov 23, 2023

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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41 Comments

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Jan 8, 2024
1,871 Posts
Joined May 2011
Jan 8, 2024
pechango
Jan 8, 2024
1,871 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 8, 2024
94 Posts
Joined Nov 2015
Jan 8, 2024
VN_Loc
Jan 8, 2024
94 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 08:51 AM.
Jan 8, 2024
1,908 Posts
Joined Aug 2003
Jan 8, 2024
odie5533
Jan 8, 2024
1,908 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 8, 2024
1,020 Posts
Joined Nov 2010
Jan 8, 2024
DVDxR
Jan 8, 2024
1,020 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 8, 2024
53 Posts
Joined Nov 2023
Jan 8, 2024
BeautifulLumber1299
Jan 8, 2024
53 Posts
Quote from Adelley :
Should have bought it in 2021 for $11.6k. That inflation
Only 1 left in stock - order soon!
Jan 8, 2024
24 Posts
Joined Dec 2015
Jan 8, 2024
FrozenRosesFX
Jan 8, 2024
24 Posts
Don't buy these, it's a scam.

https://youtu.be/r7pW2Pz2h10?si=F5Fe5_MyNzh5LPni
Jan 8, 2024
1,094 Posts
Joined Jul 2009
Jan 8, 2024
ViciousXUSMC
Jan 8, 2024
1,094 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 8, 2024
411 Posts
Joined May 2019
Jan 8, 2024
E_M__
Jan 8, 2024
411 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 8, 2024
136 Posts
Joined Nov 2006
Jan 8, 2024
Arnoldstrife
Jan 8, 2024
136 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 8, 2024
9,306 Posts
Joined Mar 2008
Jan 8, 2024
mat2000
Jan 8, 2024
9,306 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 8, 2024
353 Posts
Joined Nov 2008
Jan 8, 2024
psychocabbage
Jan 8, 2024
353 Posts
holding out for the cat15 cables...if that becomes a thing
Jan 8, 2024
1,459 Posts
Joined Oct 2010
Jan 8, 2024
throlly
Jan 8, 2024