How energy-efficient is a gold medal power supply?
Article Source:Kinri Energy | Author:Kinri Energy | Issuing Time:2024.03.21
Although many people know that gold medal power supplies are more energy-efficient than regular power supplies, in most cases, people will think that the saved electricity is not worth mentioning, after all, the electricity cost is too cheap, and gold medal power supplies are also much more expensive. However, in reality, you may not have calculated how much power is saved by gold medal power supplies, and how long will it take to recoup?
Firstly, to popularize the science, due to the existence of conversion efficiency, there will be losses when converting AC power to DC power in the power supply, so the sum of hardware power consumption is not equal to the power consumption of the entire machine.
The ratio of output power to input power is the conversion efficiency, and we can compare the power consumption using different power sources by using the load and conversion efficiency of the entire machine.
Taking the 12th generation Core platform as an example, the Core i5-12600K is paired with an RTX 3070Ti graphics card and peripheral hardware. The power consumption of the entire machine's hardware at full load is about 500W, which is the basis of the power load. Most players will choose a power supply of 550W-600W. Here, we calculate based on 600W, which means the load is 83.33%.
How energy-efficient is a gold medal power supply?
The 600W gold medal power supply has an efficiency of about 90.64% at a load of 80%, and its power consumption is about 552W; The load of a non gold medal power supply with a rated power of 600W is generally below 80%, and based on 80% calculation, the power consumption is about 625W, with a difference of 73W between the two.
It is easy to calculate that compared to gold medal power sources, unlicensed power sources consume approximately one kilowatt hour (kWh) of electricity every 13.7 hours at full load. If used for 3 hours a day, the additional electricity consumption per year is about 80 kWh. Calculated at 0.5 yuan per kWh, it means an additional electricity bill of about 40 yuan per year.
Of course, the actual situation is more complex than what we simulated. Your computer may not have such a long load every day, or the power consumption of the old platform may be higher, resulting in greater differences, etc. However, overall, it is roughly around this price.
Gold medal power supply saves more power: how long can it return to its original cost?
So how much is a gold medal power supply more expensive than a non gold medal one? At present, a power supply with a rated power of 600W costs around 360 yuan, while a power supply without gold certification costs around 250 yuan, with a difference of 110 yuan. If it takes 3 hours of full load time per day, then it can be recouped in about 3 years. Is it faster than expected?
It is easy to notice that the return on investment of the gold medal power supply is related to its usage. If you spend more time on your computer every day and frequently play games, the gold medal power supply can naturally return on investment faster. I suggest upgrading the gold medal power supply, as gold medal certified products have the advantages of being more stable and using more materials;
If the computer is not frequently used, or there are few scenarios where it is used at full load, then there is no need to increase the budget to upgrade the gold medal.