"1000W or higher power supplies are all over now. We have 4 power supplies in to review and they are all over 1000W so everyone is making them. With the new SLI setups and quad core processors there is becoming a need for higher wattage power supplies. Today we will be taking a look at the GuardianX Silver Power 1000W power supply from Tagan. We will see if it can compete with the Thermaltake Toughpower 1000W power supply we recently reviewed."