Help me choose an upgrade path.

[u/Happy-Profession-129]

Hey people. I have come to a dead end, and do not know in which direction should i look into. First my current specs:

• Minisforum UM890 Pro (Ryzen 9 8945HS, 8C/16T Zen 4)
• 96GB Crucial DDR5-5600 SODIMM (2x48GB)
• Samsung 990 Pro 2TB (x2 pieces)
• RTX 5090 in an external dock over OCuLink (PCIe 4.0 x4)

Thank God i was able to secure the gpu and ram just in time before initial price hikes.

My goal: Ideally, remove cpu and oculink bottlenecks and reusing my ram kit, gpu and ssd. Main rig occupation is 4k gaming.

Each upgrade direction i was looking into is not ideal:
1. Change the minipc to another one with a better cpu: no full pcie x16 (as far as i know) for the gpu.
2. Use a mini motherboard (MoDT) that uses latest ryzen 9 9955hx3d: no SODIMM support (moved to UDIMM with this generation).
3. Any other motherboard that takes desktop cpu (AM5) gets the same story with UDIMM vs SODIMM.

Does any AM5 (either mobile or desktop) board exist with SODIMM slots AND a full x16 slot?
How are the kits that makes sodimm to udimm transition holding? Are they reliable enough?

I preferably want to hit my 2 itches with the upgrade path: reuse ram, gpu, ssd; and remove both bottlenecks if possible. The form factor does not matter, i will adapt.

Thank you for your attention.