The corsair rm1000 is fully modular and optimized for silence and high efficiency it39s built with low noise capacitors and transformers and zero rpm fan mode ensures that the fan doesn39t even spin until the power supply is under heavy load and with a fan that39s custom designed for low noise operation it39s whisper quiet even when it39s pushed hard 80 plus gold rated efficiency saves you money on your power bill and the low profile black cables are fully modular s