Will there be any voltage instability?
The old power supply lacks the four pin output to the CPU, and the power is smaller, too.Voltage instability can cause power supply instability, computer crashes or damage.
But if, to put it simply, the previous power points are AT and ATX, the ATX is divided into many models.But the current power will only be P3 and P4's..P4 power according to the P3 more than a CPU four pin paved power supply mouth, and now the new P4 power to the motherboard power supply port also changed to 24 needles, and the former is 20 needles.So P4 power and P3 power supply is not very different, P4 power supply can be used for P3 machines, but the P3 P4 machine can not be used.
Computer power is common in the same version, but different versions make a difference.Currently, the ATX power standard has gone through many versions, such as ATX1.1, ATX1.3, ATX2.0, ATX2.2, and ATX2.3.The ATX1.1 provides only 20Pin and 4Pin power interfaces, which have been phased out and are not recommended for purchase.ATX1.3 adds a SATA power interface to the ATX1.1 and adds +12V output capability. At least one ATX1.3 power source is needed if you want to use the SATA hard disk.ATX2.0 provides a 24Pin power interface, provides dual +12V output capacity, in order to ensure the high power 75W PCIE graphics requirements, the addition of a 6pin power supply interface, if you want to assemble a collocation PCIE graphics platform, a ATX2.0 power supply should be collocation.ATX2.2 followed the dual 12V 450W output design of ATX 2, which enhanced the output capability of 3.3V and 5V, and set the output standard for the products within the range. ATX2.2 version for the design of 2 core platform, the instantaneous peak decreased, the initial cannot meet the requirements of PD, so it is easy to appear black, now through the delay over-current protection alarm time to solve.The ATX2.3 version is the core for micro architecture energy saving product specification, CPU power supply capacity decreased slightly, but the power supply capacity of Vista graphics has been greatly enhanced, more suitable for high-end graphics using collocation, so pay attention to energy saving and the quality of the game is the first game player.
