Comments: Before Zalman: Processor Zone (71C idle, 80C load); System Zone 1 (41C idle, 50C load); System Zone 2 (56C idle, 70C load). After Zalman: (63C, 68C), (36C, 39C), (43C, 46C). Zalman plugged directly into motherboard (Fan Mate 2 not used). Quiet as stock Intel heatsink and fan. 3.4E P4 (Prescott) socket 478 Intel D865PERLL Motherboard 256D Radeon 9600XT Antec Solution SLK1650 case with a 120mm exit fan and 80mm intake fans in side intake and front.