Power consumption in factory state as summary
The approximately 14 watts at idle are okay. With a second monitor and a different resolution, however, that quickly becomes 35 watts and more. By the way, we can see very nicely that the full TBP of 215 watts is rarely exhausted and only the Torture Loop or a game here even reaches or approaches the frame. Normally, it is always less. The MSI RTX 4070 Gaming X Trio is also more efficient than the Founders Edition at roughly the same power limit. You always need a few watts less for a similar performance. The reason: 3 phases more and better DrMOS.
Load distribution between PCIe slot and the PCIe sockets
MSI makes good use of the PCIe slot, especially for gaming. But you’re still below what’s allowed with 5.5 amps maximum at the flowing currents, even at the increased power limit. But I already wrote: with one more phase, you would then already be in the limit range, even if not above it. The PCB design is such that an 8-pin socket also works with the 200-Watt BIOSes. And that’s exactly why the mainboard slot (PEG) has to be used so intensively. With the 12VHPWR, if it were developed exclusively, the problem would not arise. And there was no room for a second 8-pin connector.
Rough 20 ms intervals
First, let’s look at the flowing streams. Measurements were taken at coarser 20-ms intervals, i.e. around 50 times per second, to simulate the load on the supervisor chip of the power supplies (shutdown). We see that even short load peaks are capped at 20 A at the latest. but a real limitation looks different. But you can do it that way.
Nevertheless, we still need to take a look at the voltages, or the product of voltage and current flow. I already wrote that I measured here at different power supply connections, even if in the end on the board of the graphics card all connections meet again somehow. What we can now see here as much clearer fluctuations and peaks is due to the partial slightly overvolting power supply and thus the voltage and not the currents. This is due to technical reasons, but not a big deal. However, we also see that the few peak at over 300 watts is not due to the current flowing (graphics card), but actually results from the power supply! This is also due to the topology and especially the rather puny input filter with only one coil on the single rail.
The Torture Test is hardly any different. The OC variant regulates a bit more hectically.
If you now add the voltage again, you will see a stronger ripple, which again results from the somewhat jittery operating voltage. However, in the power supply’s honor, it has to be said that this affects all current products of all manufacturers and is certainly hardly avoidable.
- 1 - Introduction, technical data and technology
- 2 - Test system and methods
- 3 - Teardown: PCB, components and cooler
- 4 - Gaming performance
- 5 - Details: Power consumption and load balancing
- 6 - Transients and PSU recommendation
- 7 - Colock rate, temperatures and thermal imaging
- 8 - Fan speed and noise level
- 9 - Summary and conclusion
70 Antworten
Kommentar
Lade neue Kommentare
Urgestein
1
Urgestein
Urgestein
1
1
Veteran
1
Urgestein
Veteran
Veteran
Veteran
Veteran
1
Urgestein
Urgestein
Urgestein
Mitglied
Urgestein
Alle Kommentare lesen unter igor´sLAB Community →