Server Power Supplies – High-Quality PSUs for Servers
Server Power Supply Prices
CyberPower Systems
OLS3000ERT2UA-B CyberPower Systems 3000VA Online (Double-Conversion) UPS/USV
In stock
Supermicro
PWS-504P-1R Supermicro 500W 1U Server PSU
In stock
FSP
PPA5008400 FSP FSP500-50FDB Active 500W Flex-ATX NAS PSU
In stock
Eaton
9SXEBM36T Eaton Online (Double-Conversion) UPS/USV
In stock
CyberPower Systems
OL1500ERTXL2U CyberPower Systems 1500VA Online (Double-Conversion) Server UPS/USV
In stock
Eaton
5SC1000IR Eaton 1000 1000VA Line-Interactive UPS/USV
In stock
Eaton
5PX2200IRTNG2 Eaton 2200VA Line-Interactive UPS/USV
In stock
Supermicro
PWS-1K02A-1R Supermicro 1000W 1U PSU
In stock
FSP
PPA9000600 FSP FSP900-50REB Active 900W ATX PSU
In stock
APC
SMTL2200RMI2UCNC APC 2200VA Line-Interactive UPS/USV
In stock
CyberPower Systems
UT1200EIG CyberPower Systems 1200VA Line-Interactive UPS/USV
In stock
Eaton
9PX2200IRT3U Eaton 2200i RT3U 2200VA Online (Double-Conversion) UPS/USV
In stock
Vertiv
GXE3-1000IMT Vertiv 1000VA Online (Double-Conversion) UPS/USV
In stock
Eaton
ELP1200FR Eaton 1200 FR 1200VA Line-Interactive UPS/USV
In stock
Eaton
9PX1500RT Eaton 1500 1500VA Online (Double-Conversion) UPS/USV
In stock
PowerWalker
10122100 PowerWalker VFI 3000 TGB 3000VA Online (Double-Conversion) UPS/USV
In stock
Eaton
9SX1000I Eaton 1000I 1000VA On-line Server UPS/USV
In stock
APC
SRT5KRMXLI-6W APC 5000VA Online (Double-Conversion) UPS/USV
In stock
CyberPower Systems
OL1000ERTXL2U CyberPower Systems 1000VA Online (Double-Conversion) Server UPS/USV
In stock
Eaton
5E1200UI Eaton 5E Gen2 UPS USB IEC 1200VA Line-Interactive UPS/USV
In stock
APC
SMV1500CAI APC 1500VA Line-Interactive UPS/USV
In stock
CyberPower Systems
CP1500EIPFCRM1U CyberPower Systems 1500VA Line-Interactive UPS/USV
In stock
PowerWalker
10121193 PowerWalker VI 3000 RLP 3000VA Line-Interactive UPS/USV
In stock
PowerWalker
10122139 PowerWalker VI 3000 RLE UK 3000VA Line-Interactive UPS/USV
In stock
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Frequently Asked Questions about Server PSU:
Yes, both power supplies should be actively powered. Ideally, they should be connected to different power circuits to ensure uninterrupted failover in case of a failure.
First, check whether the power supply is connected to a working power circuit. If problems persist, test it with a power supply tester or replace it temporarily with a working model.
Calculate the total power consumption of all components—including CPU, GPU, hard drives, RAM, and fans—and add an additional 20–30% buffer to ensure a stable power supply.
Active redundancy: Both power supplies run simultaneously and share the load. If one fails, the other must take over the full load, which should be considered in power planning. Passive redundancy: Only one power supply is active at a time, while the other remains on standby and takes over only in case of failure.
According to EU regulations, since January 1, 2024, servers must be equipped with Titanium-certified power supplies. There are only a few exceptions to this requirement.
No, desktop power supplies are not designed for continuous 24/7 operation. This applies to all server components, which are built for high durability and reliability.
Types of Server Power Supplies for Your Power Management
Choosing the right Server Power Supply affects performance, maintenance, and operating costs. Important factors include modularity, redundancy, and energy efficiency.
- Modular vs. Non-Modular Power Supplies: Modular power supplies allow flexible cabling, improve airflow, and make maintenance easier. Non-modular models have permanently attached cables, simplifying installation but offering fewer customization options. In professional IT environments, modular Server Power Supplies are usually the better choice.
- Redundant Power Supplies for Maximum Reliability: Redundant Server Power Supplies consist of two or more units. In case of failure, the second power supply automatically takes over. Hot-swappable models allow replacement during operation without downtime or rebooting.
- High-Efficiency Power Supplies with 80 PLUS Certification: Efficient power supplies reduce electricity costs and heat generation. 80 PLUS-certified models achieve efficiency rates of over 90%, providing long-term energy savings. Depending on the certification level—Bronze, Silver, Gold, Platinum, or Titanium—businesses benefit from a sustainable and cost-efficient power supply.
Key Factors When Selecting a Reliable Server Power Supply
Choosing the right power supply affects a server's performance, stability, and operating costs. There are several factors to consider when making your selection.
- Power Output (Wattage): The power supply must reliably support all components while offering sufficient reserves for future expansions. Too little power leads to instability, while an oversized power supply results in unnecessary costs.
- Compatibility: Not every power supply fits every server. Manufacturers have specific requirements for connectors and specifications. Ensure compatibility with your existing hardware.
- Efficiency and Heat Management: Efficient power supplies reduce energy costs and heat generation, easing the cooling system and extending the lifespan of server components.
- Safety Features: Protection mechanisms such as overload, short-circuit, and surge protection safeguard hardware from damage and prevent failures—particularly crucial for mission-critical IT systems.
- Form Factors: Power supplies must fit the server chassis. EPS12V is common for larger servers, while EPS1U and ERP2U4 are designed for compact 1U and 2U enclosures. The right choice ensures smooth installation and stable operation.
Maintenance Tips to Extend the Lifespan of Server Power Supplies
Regular maintenance and optimal cooling are essential for maximizing the lifespan of a Server Power Supply. Key factors to consider include:
- Airflow and Cooling: Adequate ventilation prevents overheating and extends the lifespan of components. Ensure that the server room is well-ventilated and that cooling vents are not blocked.
- Avoiding Dust and Contamination: Dust can clog fans and components. Regularly clean the power supply with compressed air to ensure efficient cooling.
- Regular Load Testing: A power supply that operates at its maximum capacity for extended periods wears out faster. Regularly check power load and upgrade to a higher-capacity model if necessary.
- Ensuring a Stable Power Supply: Voltage fluctuations or power outages can damage power supplies. A UPS (Uninterruptible Power Supply) protects against sudden failures and increases operating security.
- Maintenance and Replacement Intervals: A power supply should be inspected every 3–5 years and replaced if there are signs of overheating, unusual noises, or unstable performance.
Server Hardware is your expert for high-performance IT solutions – from power supplies for servers to storage servers and storage devices solutions to rack infrastructure, server GPUs and Intel Xeon servers or AMD EPYC servers. Trust our experience in server software, network technology and state-of-the-art server hardware – we provide you with individual and expert advice!
Not Sure Which High-Quality Server Power Supply is Right for You? We are happy to assist you in finding the best Server Power Supply for your needs. Contact us today for expert consultation!