MSI MEG Ai1300P PCIE5

Product Information

In light of the new ATX 3.0 standard, we took a shot at adding power excursion compliance testing into our articles. Given that this is the big addition to the ATX 3.0 specification– and indeed its very reason for being – it’s where we would like to see if PSUs are truly living up to the very high standards set by the new specification. The MEG power supply measures 86mm x 150mm x 160mm which is somewhat smaller in length than the larger 200mm units we have seen in recent months. As for 70°C being a high temperature for almost 500W power draw, this is not necessarily so, again, very much depending on where the temperature sensor is placed. When you look at some OTP (OverTemperature Protection) test results, often times they're at 100°C-200°C (!) on the heatsink of the 12V rail MOSFETs. On the Ai1000P, we can see OTP triggering at 168°C for example. The MOSFETs bolted onto those heatsinks are rated to provide their full performance at 100°C, so 70°C is nothing for them. The electrolytic capacitors, yes, you want to stay cool, because that will prolong their life. But with 10 years warranty, MSI feel confident about the longevity with how they have set it up. Details about the extent of our regulation by the Financial Conduct Authority are available from us on request.

There's also no way to set a fan curve or anything of that nature, so even if I did specify a manual RPM, I'd then have to make further adjustments depending on my scenario. For example I set it to X speed continuously, but then there's a scenario in which it should be running faster. At the end of the day, setting a "Customized" fan speed isn't really a solve here. Just under a year since the specification was first announced, the ATX 3.0 era for power supplies is now underway. The updated version of the Intel-maintained specification introduced several notable changes to PC power supply designs, most notably the introduction of the 600 Watt-capable 12VHPWR connector and associated cabling. Altogether, ATX 3.0 is designed to lay the groundwork for future video cards (and other high-powered accelerators) by providing for a single-cable power connection that can better accommodate the high total and rapid shifts in power consumption a video card can undergo. The rear of the box highlights some of the key features along with some technical details including the cable configuration. Electronic circuitry aside, the platform that the MEG Ai1300P is based upon is quite standard and proven. The filtering stage begins on the rear of the AC switch, with six Y capacitors, two X capacitors, and two filtering inductors. It is more than what specifications require but not overly large for such a design. The filtering stage leads to two large rectifying bridges, which are placed on their own heatsink.One strong suit of this PSU is that like all high-end 1000W+ designs, it comes with six independent PCIe power connections. Why is this important? Well, future graphics cards are going to resort to the new Gen 5 connectors and you'd either need to get a proper Gen 5 PSU or a PSU that has at least 3 connectors to meet the demand for next-gen high-end cards. You can either use them or simply plug in the 12VHPWR connector for the NVIDIA RTX 40 series graphics cards which saves you the hassle of cable managing all those extra connectors. The fan is hidden behind a shroud with another gold accented panel. We will take a closer look at this fan when we open the power supply shortly. Multi/Single Rail Switch: It can switch between single and multi-rail according to the needs of users while taking into account high current output and safety protection. Regardless of the somewhat daft naming – this 120mm fan has been used by MSI quite extensively since 2016 – under the ‘TORX fan' naming. The model PLA12025S12H-4 has been used with various MSI products, including CPU coolers. Next we want to try Cross Loading. This basically means loads which are not balanced. If a PC for instance needs 500W on the +12V outputs but something like 30W via the combined 3.3V and +5V outputs then the voltage regulation can fluctuate badly. Cross Load Testing

The MEG Ai1300P PCIE5 marks a lot of milestones for MSI – it is their first ATX 3.0 compliant unit, the world’s first ATX 3.0 compliant unit, and currently their flagship PSU product. Needless to say, the MEG Ai1300P has to meet very high expectations, both by the users and by MSI themselves. Today to test the power supply we have taken it into our acoustics room environment and have set our Digital Sound Level Noise Decibel Meter Style 2 one meter away from the unit. We have no other fans running so we can effectively measure just the noise from the unit itself. The unit achieved 80 Plus Titanium hitting just over 94% efficiency around 50% load falling to around 92% efficiency at a full load situation. It has an output port that is compliant with PCIe 5.0 and Intel PSDG (Power Supply Design Guide) ATX 3.0, also the power supply can hold up to 2x total power excursion and 3x GPU power excursion. The mysterious triangle is a symbolic icon of MEG's infinite power, with the triangle's slope further extending the three pillars of MEG's core characteristics: legendary, loyalty, and luxurious.

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