Thermaltake Power Express 450W

The Power Express 450 W is an external 5.25″-bay power supply meant only for GPUs, not a full system power supply. It’s designed to power up to four graphics cards via two 6‑pin and two 8‑pin PCIe connectors

Launched in late 2007, it delivers up to 30 A per 12 V rail, enough for high-end SLI or CrossFire setups of its time

It includes LED indicators for main power and each 12 V rail, plus protection circuits (OVP, OCP, SCP) and active PFC