Hold Up Time
The hold-up time is higher than 17 ms, but the power OK signal’s hold-up time is lower than 16ms. This would be a problem for the ATX v3.0 spec, but it aligns with what the ATX v3.1 spec requires, as it is more lenient in this section.
Inrush Current
The inrush currents are so low that I couldn’t get a meaningful reading. This is good!
Leakage Current
Leakage current refers to the small amount of current that flows through an insulating material or a semiconductor device when it is ideally supposed to be non-conductive. It is typically seen in electronics, such as transistors, capacitors, and insulators, where the current leaks due to imperfections or unintended pathways, even when the device is “off.”
Leakage current in power circuits is an alternating current flowing through the earthing conductor caused mainly by the EMC filter’s Y capacitors (Cy). The more Y capacitors, the higher the leakage current can be!
The IEC 62368-1, which replaces the IEC 60950 OFF (Office Equipment) and IEC 60065 TRON (Electronics, entertainment), defines the limits for maximum leakage (touch) current.
- Normal Condition: Maximum touch current = 3.5 mA
- Single Fault Condition: Maximum touch current = 10 mA
The leakage current is low, indicating that the transient filter’s Y caps have low capacity. The capacitance value of Y-capacitors influences leakage current; a larger capacitance value leads to higher leakage. The lower capacity doesn’t help, though, in restricting the conducted EMI emissions.
Timings
The PSU supports Alternative Low Power Modes.
We made the purchase based on your review. Installed into wife’s case, very quiet. MSI must have changed the fan (https://storage-asset.msi.com/datasheet/power-supply/us/MAG-A650GLS-PCIE5.pdf) to a 135mm FDB & also changed the profile. At 150W and it still did not switch on. Is it possible they are using thermal for fan speed?
they always use thermal info to control fan speed yes.
April 11, 2024.. on the XPG Core Reactor II VE 650W PSU Review.. you stated “The 600W setting of the 12+4 pin connector is overkill! It should normally be set at 300W.”
Because it used the 600W spec of 16AWG, you dinged it. Now because the MSI took your advice & used the 300W spec of 18AWG, you ding them.!!
I don’t ding the 16AWG gauge but the fact that they use 600W on a 650W PSU. For MSI’s case I had to talk directly with Intel to confirm that they are ok with 18AWG when the PSU has its port set at 300W.
So to wrap up, having a 600W set port on a 650W PSU is NOT good! This is what I said.
thank you for the clarification. i misunderstood the word connector as indicting cable, whereas you used connector in the context of the psu port.
i enjoy reading your reviews & opinions. great work.
glad to hear that standards are subject to interpretation. i did read your article on 12V-2×6 Cables? Are ALL The Same?. where it is summarized by Intel … According to Intel, using 18AWG gauges on a 12V-2×6 cable is incorrect, even if this is used by 750W/850W PSUs, where the maximum power setting is 300W. would it be possible to update that article to state your new conversation with Intel that it is ok with 18AWG on a port set at 300W?