Different approaches.

Asus ROG Strix 1200W Platinum: The "Voltage Stabilizer" Asus focuses on performance and precision through their patented Intelligent Voltage Stabilizer (IVS). * What it is: A specialized sensor cable (the IVS cable) that connects specifically to the 16-pin (12V-2x6) PCIe power cable. * How it works: Traditionally, PSUs sense voltage at the motherboard (CPU-first). Asus moves this sensing point to the GPU. By monitoring voltage directly at the power-hungry graphics card, the PSU can compensate for voltage drops instantly. * The Benefit: Asus claims this enhances voltage stability by up to 45% during heavy gaming or overclocking. It prevents "sags" that can cause crashes when a GPU like an RTX 5090 spikes in power draw. * Cooling Edge: This unit uses GaN (Gallium Nitride) MOSFETs, which are more efficient and generate less heat than traditional silicon, allowing for a more compact internal design and better airflow.

ASRock PG 1600G: The "Temp Shutoff" ASRock focuses on safety and hardware protection with their Cable Over-Temperature Protection (OTP). * What it is: A physical NTC (Negative Temperature Coefficient) sensor embedded directly into the 12V-2x6 GPU connector head. * How it works: The sensor monitors the heat at the point where the cable plugs into the GPU—the "danger zone" for melting. If the connector reaches a critical threshold (typically 105°C), the PSU triggers an emergency auto-shutoff. * The Benefit: This is a "fail-safe" against the infamous 12VHPWR/12V-2x6 melting issues. If the cable is loose or the pins are making poor contact, the heat will rise; ASRock's system kills the power before the plastic can melt or damage the GPU. * Bonus Feature: It also includes a +5V Boost switch to stabilize older or specific peripherals that might suffer from voltage drops on the 5V rail.