Power consumption during gaming
Now we come to the power consumption in games, where the TBP of 320 watts is put into perspective very quickly, depending on the resolution and feature set of course. In QHD, the new card is hardly thirstier on average than a GeForce RTX 4080 FE 16GB. For such a Christmas tree with three fans, this is still really good.
Even in Ultra-HD without CPU limit, it is only just behind the GeForce RTX 4080 FE, which is hardly surprising. However, I’ll come to the efficiency analysis across all cards and resolutions later. First of all, we are talking about the wattage figures, and they are still more than satisfactory despite the slight increase in consumption.
If you use the supersampling helpers, the picture is reversed again because the actually potent CPU is slightly limited. But we can also state here that the new GeForce RTX 4090 is the measure of all things when you put everything in relation to the gaming performance achieved, because even the RTX 4090 is even more restrained than the old RTX 3090 FE.
Power consumption in factory state as summary
Yes, I did run Furmark at just under 390 watts with the Power Target set to maximum, but that’s basically pointless and purely for the gallery. But again, I briefly checked the load peaks and found nothing that would contradict all the other measurements and statements. What is not so nice from my point of view is the very high idle power consumption, which rarely falls below 19 watts even when the GPU is heavily downclocked.
Load sharing between PCIe slot and external 12VHPWR connector
MSI has connected all 8 phases or the controlled 16 control loops to the 12VHPWR, which makes sense that way. The PCI-SIG says in the PCIe 5.0 specification that the card may consume a maximum of 600 watts of power in the sum of all 12V connections. Instead of the maximum possible 5.5 A at the motherboard slot, it’s only 1.1 A in the measurements, even in extreme cases, so about 13.2 watts. The card should generate various low voltages here, which hardly change as a load even when overclocking.
The main load is thus almost exclusively via the 12+4 pin connector (12VHPWR), which got up to 58 °C hot after about 1 hour of full load during operation with the 3-pin adapter (3x 6+2) on the card. However, the board where the connection is soldered has already reached a temperature of more than 55 °C.
- 1 - Introduction, unboxing and technical data
- 2 - Test system in the igor'sLAB MIFCOM-PC
- 3 - Teardown: PCB, components and cooler
- 4 - Gaming performance
- 5 - Power consumption and load balancing
- 6 - Peaks, transients and PSU recommendation
- 7 - Temperatures, clock rate, fan speed and noise
- 8 - Efficiency, summary and conclusion
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