Along with the new 12VHPWR connector for graphics cards, Intel also introduced the new ATX 3.0 power supply standard. With the MEG Ai1300P PCIe5, MSI is now introducing the first power supply unit for these specifications, which can deliver up to 2,600 watts in the short term – be it for the graphics card or the processor.
Back in March we already reported on the brand new connector, which can deliver up to 600 watts of graphics card power depending on the configuration. New connections are not just Significantly more compact than previous 6/8-pin connectors, but an adapter is required due to the new design. For example, with the KFA² GeForce RTX 3090 Ti EX, which comes with a 3x 8-pin to 1x 12VHPWR adapter.
However, a better solution would be to have a direct power supply to the computer that not only supports the new connection, but also the full power of the four through connector. Additional sense pin permission. The new MSI MEG Ai1300P PCIe 5 does and can do just that 12VHPWR connector So supply up to 9.2 amps at 12 flowers on six outputs – so: Max 662,4 watts.
The graphics card communicates with the power supply unit to determine how much power it needs. Provides time to boot the computer Initially limited to 375 watts, full performance is only unlocked when GPU drivers are loaded into the operating system. However, according to the CEM5 specification, there are a few exceptions for maximum power consumption.
Double the power for 100 microseconds!
So graphics cards are short-lived, really Very little time (about 100 microseconds) exceed their own power consumption by a factor of 3 – as long as it is longer than a second. A power supply According to ATX 3.0 standard You can change your own limits 80% for 1ms Exceed or double for 100 µs (microseconds). MSI MEG Ai1300P PCIe5 with 1,300 watts of “basic power”, which quickly becomes 2,600 watts.
This is also made possible by a small increase in the 12V tolerance. Previously, 12-volt rails were allowed to lose a maximum of 5% power, now 7% is possible. So it is quite possible that manufacturers supply the 12V rails with a little more than 12 volts so that the stability of the rails does not decrease too much (eg 12.2 volts instead of 12.0 volts).
Image: MSI
If you now think: “Second, up to 2,600 watts? The thing will blow up!” According to MSI and Intel, this behavior has been extensively tested. For this purpose, different performance scenarios were tested with 120%, 160%, 180% and full 200%. Additionally, MSI MEG Ai1300P PCIe5 supports all important protective circuits.
In the fall RTX 4000 & Co. important for
When MSI Fully-modular, 80 Plus Platinum Certified power supply, as the 1,300W model also has one 1,000 watt variant, brings to the market is currently still unclear. Also detailed No price yet, but it shouldn’t be too cheap, we suspect. Such ATX 3.0 power supplies became especially exciting in the fall, when Nvidia announced a new generation of graphics cards with the RTX 4000 and AMD with the Radeon RX 7000.
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