i7-8550U quad core ULV CPU with Thunderbolt 3 ultrabooks are highly anticipated for eGPU enthusiasts. I got one in the form of a Lenovo Yoga 920. Unlike the Yoga 720 which is crippled with both x2 PCIe and GT2 OPI issues, this Yoga 920 has x4 PCIe and GT4 OPI. I'm putting together a review on the Sonnet Breakaway Puck and here are some early numbers with the Yoga 920.

System specs:

Late 2017 14″ Lenovo Yoga 920 – i7-8550HQ/UHD Graphics 620 iGPU/8GB RAM/256GB SSD

eGPU hardware:

Sonnet Breakaway Puck + Radeon RX 560 + .5m Thunderbolt 3 cable

Hardware pictures:

Installation steps:

Installation was plug-and-play. The Sonnet Breakaway Puck provides 45W PD which is sufficient to charge an ultrabook like this Yoga 920. AIDA64 confirmed high performance GT4 mode and HWiNFO64 confirmed x4 PCIe lanes.

Benchmarks:

I used an external monitor to run benchmarks on the eGPU.