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Mantiz Venus - USB-C long cable?  

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Brawl
(@brawl)
Eminent Member
Joined: 3 years ago
 

Hey, 

I currently have a Mantiz Venus on my Macbook Pro (2017). The USB-C cable that came with it is ridiculously short so I want to replace it.

I  tried using the USB-C cable that the Macbook Pro uses to connect the power block to the laptop, and it doesn't work, so I presume it is not a USB-C cable? or there are different types of USB-C cables?

Anyway, does anyone know what cable I need to buy?

Many thanks

Nick

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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switch
(@switch)
Estimable Member
Joined: 3 years ago
 

There are multiple kinds of USB-C cables:

- charging only

- charging + USB (this is what apple supplies I think)

- charging + USB + thunderbolt

In order to use the TB3 functionality you need the latter. These USB-C cables are expensive and SHORT. Passive cables can be 50cm long at most (I am quite sure the Mantiz comes with a 50cm cable). In order to go beyond that you need ACTIVE cables. These exist in 1m and 2m flavors and both come with a disadvantage: they limit the max bandwidth (only a bit) and also limit the maximum PD - as they are power users themselves.

Look for USB-C cables with the numeral "3" inscribed next to the Thunderbolt logo. See here a sample image with a compatible cable:

2016 15" HP ZBook 15 G3 (Xeon E3-1545M, Iris Pro p580, no dGPU) + [email protected] (Aorus Gaming Box) + Win10pro

 
2018 15" HP ZBook 15 G5 (Q P1000) [8th,6C,H] + GTX 1070 @ 32Gbps-TB3 (AORUS Gaming Box) + Win10 [build link]  


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Brawl
(@brawl)
Eminent Member
Joined: 3 years ago
 

Great, thank you! really informative.

I will google about how much the bandwidth limiting will affect my gaming Smile

To do: Create my signature with system and expected eGPU configuration information to give context to my posts. I have no builds.

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switch
(@switch)
Estimable Member
Joined: 3 years ago
 

I would expect a few percentages of disadvantage when using an active cable compared to using the default passive cable. I would also expect much lower Power Delivery. If you have an 87W PD capable eGPU then expect 40~60W available to the laptop using active cables. IMO this might be the showstopper if you have a 45w CPU and are trying to game on the Laptop's display.

2016 15" HP ZBook 15 G3 (Xeon E3-1545M, Iris Pro p580, no dGPU) + [email protected] (Aorus Gaming Box) + Win10pro

 
2018 15" HP ZBook 15 G5 (Q P1000) [8th,6C,H] + GTX 1070 @ 32Gbps-TB3 (AORUS Gaming Box) + Win10 [build link]  


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jefniro
(@jefniro)
Reputable Member
Joined: 4 years ago
 

I have the CalDigit cable, 2m with the number 3 on it like the picture above. I don't know if it's because I have changed the Akitio's PSU unit (450w Corsair) but the Thunderbolt cable gives  power to my macbookpro now... I don't know if the bandwidth is less than the one with the original akitio cable!

2016 13" MacBook Pro [6th,2C,U] + RX 5700 XT @ 32Gbps-TB3 (AKiTiO Node) + Win10 1903 [build link]  

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Rycco
(@rycco)
Reputable Member
Joined: 4 years ago
 

So, is this the only recommended cable?  https://www.amazon.com/Certified-Akitio-Thunderbolt-Active-Cable/dp/B073G8LXFG/ref=sr_1_3?ie=UTF8&qid=1504419499&sr=8-3&keywords=akitio+thunderbolt+3+cable

It's unavailable at amazon 🙁 Anywhere else?

2017 15" MacBook Pro (RP555) [7th,4C,H] + GTX 1080 Ti @ 32Gbps-TB3 (Mantiz Venus) + macOS 10.12.6 & Win10 [build link]  

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jefniro
(@jefniro)
Reputable Member
Joined: 4 years ago
 

Hi! As suggested by Nando (thank you!) I send to you my benchmark that has done with AIDA64, my configurations:

 

- MacBookPro 13" i7 Late 2016 with Touch bar

- Akitio Node

- XFX RX 480 GTR Black Edition (Damn....)

 

 CalDigit Thunderbolt 3 Cable - 2,0 m

Akitio Thunderbolt 3 cable - 0,50 m

memory write:
2464MB/s=2350MiB/s

memory write:
2507MB/s=2391MiB/s

   

Iris Graphics 550

 

 

 

 

2016 13" MacBook Pro [6th,2C,U] + RX 5700 XT @ 32Gbps-TB3 (AKiTiO Node) + Win10 1903 [build link]  

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nando4
(@nando4)
Noble Member Admin
Joined: 4 years ago
 

@Jefniro,  your 0.5m and 2m cables perform pretty much the same. Your peak 2391MiB/s memory write is slightly higher than the peak I have on file for a Nvidia card for 32Gbps-TB3 here.

It's all good Smile

eGPU Setup 1.35    •    eGPU Port Bandwidth Reference Table

 
2015 15" Dell Precision 7510 (Q M1000M) [6th,4C,H] + GTX 1080 Ti @32Gbps-M2 (ADT-Link R43SG) + Win10 1803 [build link]  


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jefniro
(@jefniro)
Reputable Member
Joined: 4 years ago
 
Posted by: nando4

@Jefniro,  your 0.5m and 2m cables perform pretty much the same. Your peak 2391MiB/s memory write ia slightly higher than the peak I have on file for a Nvidia card for 32Gbps-TB3 here.

It's all good Smile

Good!! Thank you again as always!

2016 13" MacBook Pro [6th,2C,U] + RX 5700 XT @ 32Gbps-TB3 (AKiTiO Node) + Win10 1903 [build link]  

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jonwatso
(@jonwatso)
Trusted Member
Joined: 3 years ago
 

I only noticed a 1% drop in performance via benchmarking (valley) when using my 2M Cable Maters thunderbolt 3 cable. in real world use, there has been no real difference for me. 

2017 15" MacBook Pro (RP560) [7th,4C,H] + RX Vega 64@ 32Gbps-TB3 (Razer Core) + macOS 10.15.2 & Win10 [build link]  

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