Jank EGPU setup

[wadalite]

My friend has a Lenovo 7i and wants an egpu. The laptop has thunderbolt 4, and there aren't any m.2 slots to spare (or any form of expansion for that matter). They don't have the budget to get an actual enclosure equipped with thunderbolt. Would this dock work if we used an hdmi to thunderbolt instead of the included m.2 cable or would we have issues/severe bottlenecks cause the dock wasn't made for it (The card we're expecting to use is a 1070 so nothing crazy).

 

https://www.amazon.com/Serounder-External-Independent-Discrete-Serounder81s6acxzp0/dp/B0C6FH85M5/ref=asc_df_B0C6FH85M5/?tag=hyprod-20&linkCode=df0&hvadid=674244411766&hvpos=&hvnetw=g&hvrand=12524720932392107240&hvpone=&hvptwo=&hvqmt=&hvdev=c&hvdvcmdl=&hvlocint=&hvlocphy=9031293&hvtargid=pla-2207407125301&mcid=da9c5df075c2340db7fef6ffa481018b&th=1

 

[Levent]

57 minutes ago, wadalite said:

Would this dock work if we used an hdmi to thunderbolt instead of the included m.2 cable or would we have issues/severe bottlenecks cause the dock wasn't made for it (The card we're expecting to use is a 1070 so nothing crazy).

No it wouldnt as that is not how electronics work.

[Srijan Verma]

As the above answer it won't work, the main reason is because Thunderbolt has dedicated pins for pcie (4x connection) which is necessary for a egpu.

 

Which is simply not possible with HDMI.

 

Even if there was a way to connect via HDMI , HDMI 2.0 has a bandwidth of 18Gbps which is very little compared to (even considering pcie gen 3) pcie 4x (32Gbps for gen3 and 64Gbps for gen4)

[dizmo]

He could sell the laptop he has and get one that would do what he wants. Easiest solution.

Nothing about a jank eGPU set up is worth doing.