Reddit reviews Certified Cable Matters Active 40Gbps Thunderbolt 3 Cable in Black 6.6 Feet Supporting 100W Charging (Not Compatible with USB-C Ports Without The Thunderbolt Logo)

I'll be happy when manufacturers stop making noncompliant products just because they can, like below: they share the blame. And Intel ("Certifies" Thunderbolt) and these guys are USB-IF signatory members!

Talk about selective enforcement.... USB-IF isn't even regulating their own freaking members. Looks like Google decided people like us have to do it for them. :/

• https://www.amazon.com/dp/B01H5QF2TK/
  
• http://www.belkin.com/us/p/P-F2CD083/
  
  > Important Notes
  
  > - Not compatible with USB-C computers for video or data transfer
  
  https://thunderbolttechnology.net/sites/all/themes/tb/images/Thunderbolt3_infographic_100715.jpg [<- NOPE!]
  
  Lies damn lies and marketing.

Yeah, that was one of the things I have been keeping an eye on before pulling the trigger on this setup. They have finally started to make 2m ones that can handle the bandwidth. This is the one I got: https://www.amazon.com/gp/product/B01H5QF2TK/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1

I updated the main post with your info.

This should work:
https://www.amazon.com/Sonnet-Breakaway-Thunderbolt-Expansion-GPU-350W-TB3Z/dp/B072L9QTZT/
https://www.amazon.com/Cable-Matters-Thunderbolt-Supporting-Compatible/dp/B01H5QF2TK/

I did not try it personally and I have no clue if the dude that tried it had tracking issues as he went with the atenna extension-cable. For what it's worth, his system is a Xeon E5 (40 pcie-lanes), 32GB DDR4, GTX1080ti.

Did you use an enclosure for eGPUs and a 40Gbps active cable? How long is your cable? How many lanes has the pcie-port you connected it all to and what pcie-version (or how many GT/s are available for the card)?
Is the port you connected it all to a switched port or a full port?

I have this one, it's fantastic Cable Matters 40gbps 6.6 feet TB3 Active Cable

Link

Hello, I commented earlier saying I'm still experimenting with a very similiar setup. What I've found is that scaling works best when I have the laptop closed on my desk stand. Weird you're having scaling issues with the laptop closed, are you sure you set it to second display only? I turn the laptop on and immediately shut the lid so it goes directly to the second monitor upon windows login. Another option is to just sign out when the computer logs in, that resets all the scaling issues. My final option is to set "preferred monitor" or "primary monitor" in BIOS to be something off the dock.

Also, I bought this 40Gbps 6ft cable (I got the 3ft also) and it's been working excellent. Amazon Link

Its a bit pricey but most long tb3 cables are. There is also active and passive. If you get a cheaper cable they support less bandwidth, 20gbps vs 40gbps and less wattage.


https://www.amazon.com/gp/product/B01H5QF2TK/ref=ppx_yo_dt_b_asin_title_o09__o00_s00?ie=UTF8&psc=1

I had been eyeing this one but do not own it yet, will mark this as somewhere to come back to afterward and enter into the google sheet. This had been a huge concern to me, been surprised at how hard it is to find real world testing data for these cables.

https://www.amazon.com/dp/B01H5QF2TK/

looks like razer themselves sell a 2 meter version https://www.razerzone.com/gb-en/Accessories/Thunderbolt-3-Active-Cable-for-Razer-Core/p/RC21-01270101-R3M1, or failing that, amazon https://www.amazon.com/Cable-Matters-Thunderbolt-Supporting-Compatible/dp/B01H5QF2TK

https://www.amazon.com/Cable-Matters-Thunderbolt-Supporting-Compatible/dp/B01H5QF2TK/ref=cm_cr_arp_d_product_top?ie=UTF8

This cable claims that it gets 40gbps at 6ft via TB3, but some reviews say single drops at 4K and higher.

I bookmarked a few:

• https://smile.amazon.com/dp/B07BKSQ87S/?coliid=IQBRJI8L9BCN3&colid=OM2B2VCI3U3H&psc=1&ref_=lv_ov_lig_dp_it
  
  
• https://smile.amazon.com/dp/B01H5QF2TK/?coliid=I2BANNOFNG626W&colid=OM2B2VCI3U3H&psc=1&ref_=lv_ov_lig_dp_it
  
  
• https://smile.amazon.com/dp/B074JZVD2M/?coliid=I6RCMYNWI2BBQ&colid=OM2B2VCI3U3H&psc=1&ref_=lv_ov_lig_dp_it
  
  
• https://smile.amazon.com/dp/B074DT1C67/?coliid=I1JFP9QBQE6DOC&colid=OM2B2VCI3U3H&psc=1&ref_=lv_ov_lig_dp_it
  
  
• https://smile.amazon.com/dp/B01N9J47EG/?coliid=IP1TGZVKS9LTV&colid=OM2B2VCI3U3H&psc=1&ref_=lv_ov_lig_dp_it
  
  
  All 2 metres (6 feet) at 40 Gbps. Seems like better value? Never liked Apple cables if I have a choice.
  
  The Apple one is half the length at US$43.

>Do any of the multi port docks have a long enough cable to do this or would I be stuck buying a male/female usb c cable to extend it?

Determine if you need a thunderbolt cable, or just a USB C cable. It seems like you can extend usb-c, but not thunderbolt.

The longest regular thunderbolt 3 cable you can get is 6.6 feet. Someone may make an optical one, but its going to be extremely expensive and not carry power, only data.

>Would that affect speeds/quality?

Generally longer cables are worse for speed/quality and power delivery.

A 6 foot thunderbolt 3 cable that also charges my laptop. For about 6 moths I set my laptop on top of my eGPU because the cable the came with the razer core was so short. Super inconvenient. Here is the one I got: https://www.amazon.com/Cable-Matters-Thunderbolt-Supporting-Compatible/dp/B01H5QF2TK/ref=mp_s_a_1_5?crid=12Z4VSOSK3I53&keywords=thunderbolt+3+cable+6ft&qid=1550897148&s=gateway&sprefix=thunderbolt+3+cable+&sr=8-5

Edit: there are cheaper ones but i don’t believe they charge the laptop