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. In addition to the MEG series, MSI has also introduced its MPG PSU lineup with the latest ATX 3.0 standard. This PSU lineup is designed with core enthusiasts & high-performance gamers in mind. For starters, the PSU is 80 Plus Golde Certified & comes equipped with 100% Japanese capacitors that are rated to run optimally up to 105C. The cables are a mixture of sleeved and custom sleeved to fit into a variety of builds. MSI also supply a MINI USB to USB cable as this power supply can be controlled via MSI software.

The unit achieved 80 Plus Titanium hitting just over 94% efficiency around 50% load falling to around 92% efficiency at a full load situation. Load regulation holds well across the board. Within 2%. This is a very good result for MSI. MSI MEG Ai1300P 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.

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The passive components of the APFC circuitry are two beefy 400V/680μF APFC capacitors made by Nichicon, followed by two filtering coils. The active APFC components are on the longest heatsink of the unit. Four transistors can be found on their own heatsink and these form the full-bridge inversion topology at the primary side of the unit. The output of the main transformer is connected to six power MOSFETs that generate a single 12V rail. The 3.3V and 5V lines are being generated via the DC-to-DC conversion circuits. All of the secondary capacitors, electrolytic and polymer alike, are made by Rubycon and Nippon Chemi-Con. MSI is claiming my idle/light internet browsing PSU temperatures (generally 43 - 47 C) are normal. Is that actually the case? If so, how does that make sense given the example image that I provided from someone else on this forum in which New World was being run? Electrolytic: 5x Nippon Chemi-Con (105°C, W), 1x Nichicon (2-5,000h @ 105°C, HD), 4x Nippon Chemi-Con (4-10,000h @ 105°C, KY), 1x Nippon Chemi-Con (2-5,000h @ 105°C, KZE), 3x Rubycon (4-10,000h @ 105°C, YXJ), 3x Rubycon (4-10,000h @ 105°C, YXF) From the chart below you can see that the MEG Ai1300P PCIE5 can safely achieve 2x total power excursion at 200% of the PSU wattage while meeting all the standards of Intel Testing Requirements at 120%, 160%, and 180% as well. The voltage of MEG Ai1300P PCIE5 can be controlled within the allowable voltage range when the current changes rapidly and violently to maintain the system stability and avoid system abnormalities. OPP and OCP Tests While I understand that is true - in terms of comparing temperature readings from different PSUs - what I can compare this PSU to, relative to other PSUs, is the fact that no others that I've used in my office (even in systems with similar specs) have made me feel physical heat in this way. And certainly not to the point where I'm investigating to this extent. I'd be lying if I said there wasn't some buyer's remorse in that respect. It was an unexpected byproduct of this build, though certainly my own fault for not investigating as much as I could've.

MSI have worked with CWT in the design of this power supply and they allow the end user to switch between single and multi rail modes to cover a variety of possible system configurations. MSI support this unit with a 10 year ‘limited' warranty – depending on the region. MSI call this ‘G.I' (Gaming Intelligence) support. I can't say I really have had great experiences with the MSI software in the past and sometimes it would crash on the test system I used, but the software for the power supply seems to show everything that MSI claim. 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.

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Nevertheless, we took a shot at testing the power excursion capabilities of the MSI MEG Ai1300P PCIE and of thefew ATX 3.0 compliant units that we currently have available. We took two approaches:one by assuming that our electronic loads are "ideal" and programmed the exact duty cycle figures that Intel dictates in their guide, and one by trying to take into account the real slew rate times of our loads and calculate the RMS equivalent duty cycle. The resistance of the MSI MEG Ai1300P PCIE5 unit to adverse ambient conditions is astonishing, with the unit hardly affected at all while operating inside our hotbox. There is a practically negligible efficiency degradation of 0.2-0.3% depending on the load, a figure four to six times lower than other similar designs. There is very little additional degradation under heavy loads, suggesting that the components of the MSI MEG Ai1300P PCIE5 are not thermally stressed at all. The ATX 3.0 standard is still fairly new for power supplies, and we've only seen a handful be released to the general public. For SilverStone, we've got the SilverStone HELA R series. It's fairly similar to this MSI PSU in terms of available power for delivery and specs. Other brands have also launched their own units, including ASUS and Thermaltake.

For the testing of PSUs, we are using high precision electronic loads with a maximum power draw of 2700 Watts, a Rigol DS5042M 40 MHz oscilloscope, an Extech 380803 power analyzer, two high precision UNI-T UT-325 digital thermometers, an Extech HD600 SPL meter, a self-designed hotbox and various other bits and parts. For a thorough explanation of our testing methodology and more details on our equipment, please refer to our How We Test PSUs - 2014 Pipeline post. MSI placed a lot of effort into the uniqueness of the MEG Ai1300P in terms of appearance. The company went with a fully customized chassis and metallic side decorations, using contrasting body colors but not fancy lighting, for a seamless and elegant look. From a practical point of view, the chassis of the massively powerful unit is just 160 mm long, making it compatible with any ATX-compliant case. The odd point here is the two cables which are fully sleeved instead of having individually sleeved wires like the rest of them. With native 16 PIN PCIe connector this power supply is ready for Nvidia® GeForce RTX® 40 Series graphics cards. It can freely pipe up to 600W of power to PCIe 5.0 graphics cards.

Details about the extent of our regulation by the Financial Conduct Authority are available from us on request. The Features panel highlights wattage, efficiency, temperatures and fan speeds. When the load is below 55% or temperatures are below 70 degrees the fan will automatically stop. Power supplies have largely been the same since the ATX 2.0 standard was introduced in 2003. We've seen iterations over the years but moving up to 3.0 is the first leap in almost two decades. It's fitting as we're using far more power with recently released processors and graphics cards. The MSI MEG Ai1300P is about as good as you can get without decimating your budget. Main Output Load (Watts) 264.41 W 659.2 W 975.71 W 1297.87 W Load (Percent) 20.34% 50.71% 75.05% 99.84% Amperes Volts Amperes Volts Amperes Volts Amperes Volts 3.3 V 2.32 3.37 5.79 3.37 8.68 3.36 11.58 3.35 5 V 2.32 5.06 5.79 5.05 8.68 5.03 11.58 5.02 12 V 20.07 12.2 50.16 12.17 75.24 12 100.33 11.97 Kitguru says: The MSI MEG Ai1300P is a high performing power supply with interesting software enhancements that will appease the high end enthusiast audience. This modern design adopts quality internal components with 105c rated Japanese capacitors to help justify the eye watering asking price.

It is important to keep in mind that some power supply units may find a way around the power spikes by lifting the threshold for OPP and OCP. This is not the case for the MEG Ai1300P PCIE5. As shown in the chart below, the MEG Ai1300P PCIE5 maintains the OPP level of 1300W x 1.25 at 1623.55W. Power Supply Timing Values Is A PassThe efficiency of the MSI MEG Ai1300P does meet the 80Plus Platinum certification requirements when it is powered from an 115 VAC source. However, when the main’s voltage is 230 VAC, the efficiency is raised by an average of 1%, which is not enough to meet the 80Plus Platinum requirements for that input voltage. The average nominal load efficiency (20% to 100% of the unit's capacity) is 92.1% with the unit powered from a 230 VAC source, and drops down to 91.3% if the unit is powered by a 115 VAC source. It is also interesting to note that itsefficiency under very low loads is quite high, at above 83% for a 5% load. The rear of the box highlights some of the key features along with some technical details including the cable configuration.