Geekworm P173 Heavy Duty Passive Cooling… vs 5V 4A USB-C Power Supply for Raspberry Pi 4 — Head-to-Head (2026)

Our verdict

5V 4A USB-C Power Supply for Raspberry Pi 4 is our pick.

Buy the iUniker 5V 4A USB-C power supply first — it is the part that determines whether your Raspberry Pi 4 boots and stays stable at all, while the Geekworm P173 aluminum case only matters once you're actually pushing sustained load. These are not competitors: one is the mandatory 20 W power path, the other is an optional 174 g passive heatsink, and in a same-budget build the power supply always goes in the cart first.

Buy the Geekworm P173 Heavy Duty Passive Cooling Aluminum Case if you already own a genuine 5V/3A+ USB-C Pi supply and your board is throttling under sustained load — 24/7 Pi-hole, Home Assistant, RetroPie, a fanless media box, or anything you want silent and dust-tolerant. Buy the iUniker 5V 4A USB-C Power Supply if you're assembling a Pi 4 from scratch, are running off a phone charger or a hub port, or are seeing the lightning-bolt undervoltage icon — its 20 W headroom, UL listing, 5 ft cable and inline on/off switch fix a class of failures no heatsink can touch.

SpecPicks editorial verdict, written June 9, 2026. Prices move, so check the current price on each listing before you buy.