Question about Titan Ridge & similar TB3 expansion cards
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Question about Titan Ridge & similar TB3 expansion cards  


Eminent Member
Joined: 2 years ago

I have an Asrock Z270 ITX motherboard, which has a JHL6240 TB chip.

The board has a TB3 port, and it works with my eGPU, but I learned that it's only x2, not x4.

Will using a Titan Ridge or similar PCIe TB3 expansion card help get me to full bandwidth? Or will I always be limited by the mobo's controller?

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


Noble Member
Joined: 4 years ago


The Thunderbolt add-in card would need to be installed in the ITX motherboard's PCIe slot or connected to an M.2 slot. It probably won't work because the firmware won't support that configuration and there's no Thunderbolt header to connect the header cable of the Thunderbolt add-in card. It might work if the Thunderbolt device is connected before startup, but hot-plug and sleep would not work.


Mac mini (2018), Mac Pro (Early 2008), MacBook Pro (Retina, 15-inch, Mid 2015), GA-Z170X-Gaming 7, Sapphire Pulse Radeon RX 580 8GB GDDR5, Sonnet Echo Express III-D, Trebleet Thunderbolt 3 to NVMe M.2 case