Cooler Master RS700-ASABL3-UK GX-Lite 700W Power Supply

The Cooler Master GX-Lite RS700-ASABL3-UK is a 700W ATX power supply built around a single 12V rail architecture with a rated efficiency of 86–88% under typical load. In practical terms, that efficiency figure means less than 100W is converted to waste heat at full draw — a meaningful reduction in chassis thermal load compared to older sub-80% efficient units. The single-rail topology consolidates the full 12V current budget into one pool, eliminating the artificial per-rail limits that can cause nuisance shutdowns when a high-TDP GPU pulls aggressively. Protection circuits cover OVP, SCP, and OPP — the core fault scenarios — and the >17ms hold-up time meets ATX specification for riding through brief AC interruptions cleanly.

This PSU targets mid-to-high-range desktop builds where budget discipline is a factor and modular cabling is not a strict requirement. It's a practical fit for systems running a discrete GPU in the 150–200W TDP range alongside a modern multi-core CPU, without the overhead cost of a Gold or Platinum certified unit. Power users running dual-GPU setups or next-generation GPUs with TDPs above 250W should evaluate whether 700W provides sufficient headroom under combined CPU and GPU load. The fixed cable harness requires more cable management effort than modular designs, making it better suited to mid-tower and full-tower cases where excess cable can be routed behind the motherboard tray rather than left loose in the airflow path.