Transient Response
20% Load – 20ms
| Advanced Transient Response 20% - 50 Hz - No Caps | ||||
| Voltage | Before | After | Change | Pass/Fail |
| 12V | 12.097V | 11.922V | 1.44% | Pass |
| 5V | 5.084V | 4.987V | 1.90% | Pass |
| 3.3V | 3.320V | 3.171V | 4.50% | Pass |
| 5VSB | 4.989V | 4.945V | 0.88% | Pass |
50% Load -20ms
| Advanced Transient Response 50% - 50 Hz - No Caps | ||||
| Voltage | Before | After | Change | Pass/Fail |
| 12V | 12.075V | 11.904V | 1.41% | Pass |
| 5V | 5.076V | 4.974V | 2.00% | Pass |
| 3.3V | 3.312V | 3.156V | 4.70% | Pass |
| 5VSB | 4.961V | 4.899V | 1.25% | Pass |
The transient response with normal loads is average at 12V, decent at 5V and 5VSB, and mediocre at 3.3V, where the rail’s voltage drops well below 3.2V at both tests.
Transient Response ATX v3.1 Tests
The PSU passes all ATX v3.1 transient response tests.
The 12V rail’s performance is not competitive at high transient loads. I cannot call it bad or even mediocre, because it is close to the category’s average voltage level.
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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?