The heatsink I have for the 3080 might work pretty well. It's far more beefy than the stock one, even the 100w variant. As far as the eDP goes, is that why it uses Intel Graphics for display, even when I plug an external display up to it? I was hoping to be able to hook it up to a better display at times, but display adapter is Intel and resolution options maxed out at 1080p@60hz.
I thought about attempting a custom resolution and seeing if itd work but haven't had the cance. I figured over displayport it'd do 1440p, but we'll see.