Be Quiet! Dark Power 13 - 1000W PSU Review - Final Words & Conclusion

Final Words & Conclusion

In our PSU reviews, we focus on the overall experience rather than relying solely on scientific data-sets. However, we do run tests on rigorous hardware and fine-tune the setup to produce numbers that are consistent with real-world usage. Despite utilizing multiple components in our testing, we often struggle to achieve a load above 750-800 Watts. This is partially due to the limited demand for high-wattage power supplies (1000W/850W) among single GPU users. However, recent developments in graphics card technology, such as the RTX 4090 and custom 7900 XTX cards, have led to a resurgence in power consumption above 350-400 watts for non-overclocked systems. This shift away from energy efficiency may not be ideal for the industry as a whole.

Efficiency

The optimal efficiency for a power supply is typically achieved when it is operating at half of its maximum load rating. In the case of the power supply being discussed, this sweet spot is at 92% efficiency when operating at 230 Volts. A power consumption range of 350 to 400 watts is considered ideal for a gaming PC with a high-end dedicated graphics card, as this is roughly the amount of power that such a system would consume during heavy gaming sessions. Power supplies are available in a range of efficiency ratings, from Bronze to Platinum. However, the differences in efficiency between these ratings are relatively small, with only a few percentage points separating them. These differences also have a minimal impact on energy consumption and electric bills. The graph below illustrates the wattage differential based on 50% PSU load versus energy consumption on the wall side.

The amount of energy consumed by a gaming PC can have a significant impact on electricity costs. For example, assuming an average usage of 5 hours per day, 5 days a week for a full year, and a consumption rate of 350 watts, the cost of electricity can vary depending on the efficiency of the power supply unit (PSU). The 80plus rating system is used to indicate the efficiency of a PSU, with ratings ranging from 80plus to Titanium.

Based on an average rate of 40 cents per kWh, the difference in cost between an 80plus rated PSU and a Titanium rated PSU for 13 hundred hours of gaming per year is 47 EUR/USD. It is worth noting that while efficiency is an essential factor, build quality is also an important consideration when choosing a PSU. It is also important to note that this calculation is based on gaming usage, and that the savings from an efficient PSU can be much higher for other types of usage such as 24/7 mining. For example, the difference in cost between an 80plus rated PSU and a Titanium rated PSU for 24/7 mining usage can be as high as 828 USD/EUR per year, depending on kWh prices.

Stability

The Dark Power 13 series power supply unit (PSU) has been found to be stable, with no complaints regarding voltage drops at both half load and maximum load. Additional ripple tests may be conducted by other reviews, but it is expected that the product will perform well. The PSU offers the option of four 12V rails or, in OC mode, a massive single +12V rail.

Aesthetics

The design of the Dark Power 13 series is visually appealing, featuring dark accents and slightly exceeding the ATX length at just over 17cm. The cables are enclosed in dark black sleeving, and the plastic connectors are also black. The PSU features a modular design, allowing users to only use the wiring they need, keeping the interior clean and organized. Overall, the Dark Power 13 series is not only functional but also attractive.

Pricing

The suggested retail prices for the Dark Power 13 power supplies, which come with a 10-year warranty, have been announced. The 1000W version will be available in retail starting January 24th at a price of $289.90/€294.90/£289.99, the 850W version will be priced at $249.90/€259.90/£249.99, and the 750W version will be priced at $209.90/€214.90/£209.99. These prices may be considered high by some consumers.

Final words

We at Guru3D.com have a positive perspective on Titanium-rated power supplies. The latest ATX3.0 spec and the 600W 12VPWR connector for NVIDIA graphics cards make the new be quiet! Dark Power 13 power supply stand out among others. However, it is essential to note that while this power supply may be suitable for some gamers, it is not the most appropriate option for those who prioritize energy efficiency over cost. The high efficiency of this power supply comes with a premium price tag. If a PC is used for gaming for a few hours a day, the savings in energy costs over a Silver or Gold certified model may not be significant. However, for those who use their PCs for extended periods of time, even 24/7, the efficiency of this power supply can lead to significant savings in energy costs over time, particularly in regions with high electricity prices like the EU.

Furthermore, higher efficiency in power supplies often means cleaner and more stable power delivery, as well as cooler operation. While most platinum and titanium PSUs are passive up to 40% load, this feature is not present in the Dark Power 13 series, but it is designed to operate silently. Additionally, the product comes with a 10-year warranty, making it a long-lasting investment.

Overall, the Dark Power 13 power supply offers a feature set that will appeal to a wide range of users and is especially well-suited for those using the new NVIDIA GeForce RTX 4000 graphics cards. Based on our observations, we see nothing but quality hardware in this product.

• Sign up to receive a notification when we publish a new article
• Or go back to Guru3D's front page