Cooler
99k $GPU−20% watts for every card in the rack, permanently
Takes a rack bay of its own. Buys headroom in the limit that actually blocks you.
Overclock
69k $GPU+25% compute for 7 days
Burns life faster than it adds output. A bet on the current epoch, not an upgrade.
Warranty
2.40 NVDARestores a worn card to full life
Paid in NVDA, so it deepens the pool instead of burning supply. Adds no watts.