Power supply failure
My power supply died this past weekend. I went back to the store i got my pc from and had it exchanged for a new one since its still under its 1 yr warranty. Anyways, here's my question. Before i built this computer i checked out what hardware i would need with what power supply. Some site did the calculation that i needed 350watt, actually 350W was recommended. I bought a 420W just to be safe. The guys at the store are telling me that since my power supply is generic brand, that its not TRUE power. They said for what i have in my system, my current power supply will not suffice and i was lucky it didnt die earlier. Therefore i need to buy another one from OCZ or Enermax or something that sells TRUE 450W power. Is this really necessary? I dont want to have to go out and buy another power supply for $100 if not necessary.
My system specs are below. I just shut off my SLI in order to put less drain on the system. But i want to turn it back on soon.
AMD Athlon 64 3500+ [939 Socket] W/ ASUS "A8N-SLI Premium" (OC'd @2.4ghz) | 560W Silverstone Spider PSU | Kingston 1024 MB [512MB X2] DDR-400 PC3200 Memory | Dual MSI Nvidia GeForce 6600GT 128MB DDR3 128-bit PCIe @555/1111 in SLI | Samsung 19" LCD 930B (8ms) | Western Digital 200 GB SATA II (x2) | LG Dual Format/Double Layer 16X DVD±R/±RW + CD-R/RW Drive