RTX 4080 TDP – how high is the wattage?
The big sizes must be there for a reason, so how much power does the 4080 consume
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If you want an RTX 4080, we can help you identify the power supply to watch out for. Remember the 16-pin power connector for RTX 4000 series GPUs before continuing. You’ll need to utilize the adaptor included with your graphics card because most power sources don’t have this connection.
Although recently there has been some 12VHPWR burning up on the new RTX 4090. So it might be a consideration when looking at either option. As there is also the option of native ATX 3.0 power supplies that feature the 16-pin connector.
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The power demands we see for the 40-series aren’t particularly novel, but they are unquestionably higher than usual; the RTX 3090 used 350 watts, and the 4090 now consumes 450 watts, making it equal to the 3090 Ti. If you desire Nvidia’s newest flagship, you will undoubtedly need a strong PSU with plenty of power.
The power consumption of the 4080 is 320 watts and is reasonable. As early rumors for the card suggested a much higher rating. So it does fall in line with the previous generation even with the higher performance. Although the cooling has become significantly bigger with the growth of the 4080 sizes.

How much power does the RTX 4080 use?
According to Nvidia’s official specifications, the RTX 4080 has a graphics card power of 320 W. It has changed its definition and now suggests that it is the maximum power it will consume. So it will likely not stay at that rating for the whole time it is in use.
However, custom cards may change this number as well. Some AIBs opt for more premium expensive cards capable of pushing further. Their custom BIOS may allow the card to reach even higher numbers so it may vary depending on which GPU you choose. As they also suggest different PSU capacities.
FAQs
What is the RTX 4080 TBP?
The TBP (Total Board Power) of the RTX 4080 is 320W.
What wattage power supply do you need for the RTX 4080?
For the Founder’s Edition card, Nvidia recommends a system power of 750 W. However, custom cards may require more if they expect to use more power or give themselves a safety barrier. So this could go up to 850 W and it’s best to check between models.