A coworker of mine was an computer engineer in the early 2000s, but is now a warehouse director. She told me she helped her son build a new pc but it was having heating issues. I asked about fans and she said it only had 2 intake on the front with no exhaust. Told her a local shop that has cheaply priced good fans. She said computers have changed a lot in 20 years. I helped in about a week ago with choosing storage blocks, had no clue nvme even existed.

I’d say it was the fan that solved the overheating problem, not the zip ties.