ASRock’s Support is Amazing! Official Efficiency Report Released for the “PRO-650G” Power Supply
The other day, following a failure of my PC’s power supply unit, I replaced it with ASRock’s latest model, the “PRO-650G" (650W / 80 PLUS GOLD).
Curious about the actual power conversion efficiency data (Efficiency Curve), I decided to contact ASRock’s technical support on the off chance they could help… and remarkably, I received a reply in just one day!
Here is the actual message I received from their support team.
Reply from ASRock Technical Support:
Regarding your inquiry about the Efficiency Curve of the “PRO-650G" power supply unit, we would like to provide the official measurement results report from 80 PLUS.
You can check the detailed efficiency curve and actual measurement data at each load level from the following link.
80 PLUS Verification Report – ASRock PRO-650G (PDF)
It’s top-tier customer service to directly provide the official raw data (PDF) from CLEAResult, the independent testing organization that conducts the 80 PLUS certification tests, in response to a user’s question. I was truly impressed by the speed and attentiveness of ASRock’s support.
https://amzn.to/4vjYJ9jIn the Graphs: Why the ASRock PRO-650G is “Ultra-High Efficiency"
The official report PDF provided contains graphs and data of the “Efficiency Curve" strictly measured in a laboratory.
Looking at this graph and the measurement results, you can tell at a glance just how exceptional this power supply is. Here is the actual measurement data under typical Japanese outlet conditions (115V).
Realistic Conversion Efficiency at Various Loads (Published Values)
| Load | Output Power | Efficiency | 80 PLUS GOLD Standard |
| 5% | 32.55W | 66.25% | – |
| 10% | 65.09W | 84.27% | – |
| 20% | 130.09W | 89.20% | 87.00% or higher |
| 50% | 324.35W | 91.51% | 90.00% or higher |
| 100% | 647.13W | 89.55% | 87.00% or higher |
As you can see from the curve on the graph, it achieves high scores that comfortably surpass the strict threshold values of 80 PLUS GOLD across all ranges.
Energy Saving Even During “Low Load" Tasks Like Web Browsing
Generally, high-capacity power supplies have a weakness where “efficiency drops sharply when power consumption is low (such as under 100W)."
However, looking at the graph for this PRO-650G, it maintains an extremely high efficiency of 88.62% even at a 20% load (132W). A fantastic feature is that it effectively suppresses wasted electricity bills and heat generation even during light tasks like watching YouTube or writing articles.
Conclusion: A Unit That Excels in Both Performance and Support
While the component performance is great on its own, I felt that the peace of mind provided by ASRock’s support system—which immediately delivers such clear and accurate data in response to user inquiries—is truly invaluable.
- You want a quiet power supply that keeps electricity bills down
- You want a long-lasting companion compatible with the latest standards (ATX 3.1)
- You want a manufacturer with a reliable support system just in case
For anyone building a new PC or considering replacing their power supply, I wholeheartedly recommend the “ASRock PRO-650G"!