Looking for the best PC power supply? In this article, we’ll break down the top power supply units available whilst comparing them for SMPS price versus performance.
Here we go for the best PSUs on the market. We have included links in the description for each product mentioned, so make sure you check those out to see which one is in your budget range.
1 Corsair SF450
At number 1 we have the Corsair SF450. With SFX Form Factor, the Corsair SF450 provides high-end performance in a small form factor. Equipped with 100% Japanese 105 electrolytic capacitors, it’s fully modular.
This design makes your builds and upgrades easy to complete and maintain. Detachable DC cables let you use only the cables you need, allowing you to save internal space and improve system airflow.
It has all the features of a full-size unit in a small form, making it a favorite for anyone looking to build a neat, clean system. Premium internal components ensure solid power delivery and provide long-term reliability.
A zero RPM fan mode makes it quiet, and a seven-year warranty guarantees years of reliable operation.
It’s perfect for anyone looking for a power supply unit that will last across several systems builds.
By being 80 PLUS Gold certified, this model is highly efficient in operation, producing less excess heat.
Less excess heat means you can enjoy lower operating costs. The Corsair SF450 features one ATX connector with ATX12V version v2.4.
The continuous output rated temperature is40°C, and it provides continuous power with a 450-watt power supply. It includes a low profile black cable, one EPS connector, two PCI-E connectors, and four SATA connectors.
This power supply unit also comes with cable ties and a DC modular cable storage bag.
2 Corsair RM550x
At number 2 we have the Corsair RM550x. Like the Corsair SF450, the Corsair RM550xis an efficient and fully modular power supply unit designed to provide long-term reliability. It includes the same 100% all-Japanese 105capacitors as the SF450, and it features zero RPM fan mode.
At low and medium loads, it’s a quiet operator. This fully modular design makes your builds and upgrades easy and delivers clean-looking results. It’s 80 PLUS Gold certified with a high-efficiency operation for less excess heat and lower operating costs.
The casing measures 160mm long, so it fits into almost all modern PC cases. The fully modular power cables allow you to connect only the cables you need so you can create a clean, neat build inside your PC case.
It includes the RMx Series ATX power supply, the necessary mounting screws and cable ties, and is compatible with ATX12V v2.4 and EPS2.92 standards. With the Corsair RM550x, you’ll enjoy 550wof continuous power, low profile black cables, and a continuous output rated temperature of 50°C.
The Corsair RM550x comes with a 10-year warranty that ensures years of reliable operation. It’s an excellent choice for anyone searching for a PSU that will last across several systems builds.
It includes one EPS connector, two PCI-E connectors, and six SATA connectors. While not as powerful as the Corsair RM750x(750w with a 12V rail), the RM550x comes at a much more reasonable price tag.
3 Seasonic FlagshipPRIME 600
At number 3 we have the Seasonic FlagshipPRIME 600. This Seasonic model is one of the best power supply units available. With a fully modular cabling design, it offers a flexible solution to optimize cable management.
It also reduces the amount of clutter inside the computer case. Reliable aluminum electrolytic solid capacitors offer top-grade function.
These Japanese-sourced components extend product life. They also ensure operation stability in extreme conditions. For micro tolerance load regulation, this model keeps the output voltage within a very tight range.
This allows it to achieve an under 0.5% load regulation. With impressive electrical performance and stability, it’s ideal for high-performance systems. The Seasonic Flagship PRIME 600 model is the first 80 PLUS Titanium certified fanless unit on the market. It uses a PRIME Titanium fanless system that utilizes passive cooling to cut fan noise. This PSU offers ultra-high efficiency.
It achieves the highest level of 80 PLUS Titaniumcertification on the market with 94% efficiency and a 50% system load. Other features of this model include a DCto DC converter design, gold-plated connectors, and an impressive 12-year warranty. It features an Intel ATX 12V form factor with webbed and flat cables. These cables include six SATA connectors, one floppy connector, and five peripheral connectors.
4 EVGA SuperNOVA 850P2
At number 4 we have the EVGA SuperNOVA 850P2. The EVGA SuperNOVA 850 P2 boasts an impressive ten-year warranty. It offers platinum performance and is fully modular to reduce clutter and improve airflow.
This model is 80 PLUS Platinum certified. With 115VAC it boasts 92% efficiency. With 220VAC-240VAC, it offers 94% efficiency or more under typical loads. With both overvoltage and under-voltage protection, this model is top of the line.
Your system will be extra safe with over current protection, overpower protection, and short circuit protection. This unit features a 140mm double ball-bearing fan size.
The 100% all-Japanese capacitors ensure long-term reliability. Award-winning P2 power supplies and an ECOControl fan system allow for nearly noiseless operation during low to medium loads.
5 Corsair AXi Series AX1500iDigital 1500W
At number 5 is the Corsair AXi Series AX1500iDigital 1500W. The Corsair AXi Series AX1500i is an excellent option for your ultra-high performance PC. It defines the state of the art for enthusiast-grade PC power supplies on the market today.
This model offers 1500 watts of continuous,digitally-controlled power on 15 amp circuits of 115 or higher. It also features an 80 PLUS certification with an impressive 94% efficiency rating.
The zero RPM fan mode allows you to enjoy nearly silent operation at low and medium loads. A fully modular and low profile cable set makes it easy to install and allows for great-looking builds. Corsair Link integration allows you to check for efficiency and customize performance.
The performance can be easily monitored right from your Windows desktop. In short, the AX1500i has it all. Compatible with Corsair iCUE, this power supply unit will provide clean and stable power so you’re system always runs up to full capacity.
It boasts a digitally controlled power that provides for tighter voltage regulation. It also features excellent electrical specifications.
With its DSP-based design, the Corsair AX1500ireduces the internal component count. This allows it to better control ripples and noise. This model is compatible with ATX12V v2.4and EPS 2.92 standards.
You’ll find a Corsair Link USB cable, as well as an accessory bag with mounting hardware and cable ties.
It also features fluid Dynamic fan bearing technology, a fan size of 140mm, and low profile black cables.
It is C-Link ready and includes two EPS connectors, two floppy connectors, ten PCI-E connectors, and 20 SATA connectors.