darkFlash’s power supply lineup is divided into the UPMOST, PERFECTMOST, and SAVEMOST series. Among them, the PERFECTMOST lineup fully supports the latest ATX 3.1 standard, boasts high efficiency with 80PLUS Gold certification, features a full modular design, and is offered at a reasonable price. It is positioned between the cost-effective SAVEMOST series and the high-performance UPMOST series, targeting gaming users.
Today, we will take a closer look at the darkFlash PERFECTMOST 850W 80PLUS Gold Full Modular ATX3.1 White. It offers a generous 850W output and supports ATX 3.1 and PCIe 5.1 standards, making it fully compatible with NVIDIA RTX 50 series or AMD RX 9000 series. Especially released in white, it is perfect for those looking to build an all-white system, which is a current trend. Let’s explore the features and performance of this product in detail.
darkFlash is a global PC component brand launched in 2016, offering a wide range of products including cases, cooling systems, power supplies, and gaming gear. In Korea, it has established itself as the number one brand in the PC case sector, known for its excellent quality and sophisticated design at reasonable prices, earning the love of many users. Products optimized for the Korean environment are continuously released through the official distributor, Two Way Co., Ltd., ensuring worry-free after-sales service.
Specifications and Components
Looking at the basic specifications of the darkFlash PERFECTMOST 850W, it provides a rated output of 850W with a single 12V rail configuration offering 70.8A, which means 100% 12V availability. The product dimensions are 150 x 140 x 86mm, with a depth of only 140mm, allowing it to fit into most cases without space issues.
It guarantees high efficiency with 80PLUS Gold certification and a power factor (PF) of up to 99%, minimizing power loss and helping save on electricity bills. The standby power is stated by the manufacturer to be less than 0.5W, and it comes with an impressive 10-year warranty.
The package includes the product itself, a pouch containing full modular cables, and a user manual. Inside the pouch, you’ll find an AC power cable, mounting screws, cable ties, one ATX 24-pin main cable, two 4+4 pin CPU auxiliary power cables, three 6+2 pin PCIe cables, one 12V-2×6 cable, SATA cables for seven ports, and Molex cables for five ports, allowing for versatile system configurations.
Appearance and Features
The darkFlash PERFECTMOST 850W White is finished with a clean white coating on the entire body, and the cooling fan on top is also matched in white, completing a unified appearance. The top features a square-patterned air hole design, with the darkFlash logo engraved as a focal point.
Thanks to its compact depth of 140mm, it can be easily installed in most mid-tower cases. It is also attractive for use in small cases, a recent trend, without worrying about space interference.
With a full modular design, you can connect only the cables you need. This not only allows for neat cable management inside the case but also minimizes airflow obstruction caused by unused cables.
The rear features an AC input terminal, a power switch, and a zero-fan mode On/Off switch, allowing users to choose whether the fan operates.
The cooling fan is equipped with a 120mm FDB (Fluid Dynamic Bearing) bearing fan. FDB bearings are known for low friction, long lifespan, and quiet operation. It supports zero fan mode, allowing it to operate as an ultra-quiet power supply by completely stopping the fan under low load conditions. This feature can be turned on and off by the user with the switch located at the rear.
It fully supports Intel ATX 3.1 and PCIe 5.1 standards. The ATX 3.1 standard is designed to respond stably to sudden power spikes, ensuring compatibility with the rapid power fluctuations of the latest graphics cards. It is equipped with seven protection circuits, including OVP (Over Voltage Protection), OPP (Over Power Protection), OCP (Over Current Protection), UVP (Under Voltage Protection), SCP (Short Circuit Protection), OTP (Over Temperature Protection), and NLP (No Load Protection), to safely protect the system in various abnormal situations.
Cable Configuration
As previously mentioned, the cable configuration includes one ATX 24-pin main cable, two 4+4 pin CPU auxiliary power cables, three 6+2 pin PCIe cables, one 12V-2×6 cable, SATA cables for seven ports, and Molex cables for five ports.
The 12V-2×6 cable supports up to 600W output, providing sufficient power to high-performance graphics cards with a single connector, keeping the case interior tidy.
The cables use a mesh-patterned black flat cable, enhancing durability while allowing for flexible bending. This design facilitates easy cable management and improves airflow.
System Configuration and Assembly
One of the current PC assembly trends is the all-white system. This involves unifying all components, from the case to the motherboard, graphics card, cooler, and power supply, in white to create a clean and sophisticated interior aesthetic. The darkFlash PERFECTMOST 850W White is optimized for building such an all-white system.
darkFlash offers a rich lineup of white cases and coolers, allowing for a cohesive system configuration. For this test system, I used the darkFlash DS500M RGB White case and the EXPLORE E400 PLUS ARGB CPU cooler.
The main components used were the AMD Ryzen 7 9800X3D processor and the NVIDIA GeForce RTX 5070.
Benchmarking
Before installing it in the case, I measured each voltage using a power supply tester. The test results showed +12V at 12.1V, +5V at 5.01V, and +3.3V at 3.36V, all very close to the rated voltages, demonstrating stable output. The stability was confirmed within the voltage fluctuation range allowed by the ATX standard, ensuring stable power supply during actual system operation.
I conducted a hardware stress test using OCCT. OCCT is software that applies extreme loads to the CPU, GPU, memory, and power supply to verify stability. In power test mode, I applied maximum load to both the CPU and GPU simultaneously to check power consumption and stability.
Under full load, the system’s average power consumption was about 462W, using only about 50% of the rated capacity, operating in the most efficient range. There was almost no voltage fluctuation during the test, and stable power supply was maintained.
I also measured power consumption in standby mode. When the system was idle on the Windows desktop without any tasks, the power consumption was about 77W, with the power supply’s cooling fan completely stopped in zero fan mode.
When the computer was shut down and in standby mode, the power measured by the smart plug was 2W. Since the product itself consumes about 1W, more precise measurement could show less than 0.5W as stated by the manufacturer.
In Conclusion
The darkFlash PERFECTMOST 850W 80PLUS Gold Full Modular ATX3.1 White is an attractive product for gaming PCs using the latest graphics cards, especially for those looking to build an all-white system. It fully supports ATX 3.1 and PCIe 5.1 standards, ensuring excellent compatibility with next-generation graphics cards like the NVIDIA RTX 50 series or AMD RX 9000 series. The 12V-2×6 connector is provided as standard, allowing for neat connections without additional conversion cables. It’s an ideal product for those seeking a power supply that supports the latest graphics cards.
The all-white design is its biggest charm. By using it with darkFlash’s white cases like the DS500M RGB, DPF70 ARGB, DY460 ARGB BTF, and white liquid/air coolers, you can create a cohesive and sophisticated white system.
For those looking to build a high-performance gaming PC, especially a white concept system, with AMD Ryzen 9000 series or Intel Core Ultra series processors and RTX 5070 or higher graphics cards, the darkFlash PERFECTMOST 850W White is worth considering.
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