10Pcs 14" x 16" Expanding Foam Packaging for PC & Irregular-Shaped Items, Self-Adapting Protective Foam for Shipping Electronics, Fragile & Valuable Items

When I moved across the country I used expanding packing foam. I linked something similar. One on top, bottom, and one inside with the gpu removed and packed separately. I had no issues. https://a.co/d/0gwuuFR7