Case Power Supply Deals & Case Power Supplies for Sale

A compact form factor PSU that fits slim 1U rackmount cases where standard ATX units won't physically fit, so it's mainly for builders working with server chassis or small form factor systems with tight space constraints. Buy Now at Newegg

A straightforward replacement or upgrade option for HP Z230 CMT workstation owners who need a compatible 400W unit without sourcing directly from HP. Buy Now at Newegg

Newegg has this FSP 800W switching power supply listed as a replacement unit for Inspur servers, making it a straightforward option if you're maintaining or repairing Inspur rack hardware and need a compatible OEM-style PSU without sourcing directly from the manufacturer. Buy Now at Newegg

Designed for telecom and industrial applications, this 1,000W unit outputs 24V DC, which suits anyone running server equipment, radio systems, or other gear that needs stable, high-wattage DC power rather than a standard AC supply. Buy Now at Newegg

Rack-mounted servers and workstations need reliable power delivery, and a replacement server PSU like this is the kind of part you're hunting for when an existing unit fails and downtime isn't an option. Newegg has this listed if you're sourcing spares for compatible hardware. Buy Now at Newegg

A solid pickup if you need a replacement or spare power supply for a Juniper Networks device, as OEM networking hardware components like this tend to be harder to source at a reasonable price outside of enterprise channels. Buy Now at Newegg

A redundant power supply for the RackSwitch G7000 is a straightforward upgrade for data center or server room setups where unplanned downtime isn't an option. Newegg has it listed if you're maintaining or expanding an existing G7000 deployment and need a spare or replacement unit. Buy Now at Newegg

A budget-friendly option for basic desktop builds or older systems that don't require high wattage, this 500W unit covers standard configurations without the overhead of a modular or higher-tier PSU. Buy Now at Newegg

The RM850e is a solid pick if you're building or upgrading a PC and want a fully modular unit, meaning you only connect the cables you actually need, which keeps cable management clean. At $135, it's $20 off the list price and includes ATX 3.1 support for the latest GPU power connectors. Buy Now at Best Buy

Solid pick for a mid-range PC build where you want clean cable management and future-proofing via the ATX 3.1 connector, which supports next-gen GPUs without an adapter. At $90, that's $25 off the $115 list price for a fully modular, 80 Plus Gold-rated 750W unit. Buy Now at Best Buy

Modular wiring means you only connect the cables your build actually needs, which keeps airflow cleaner and cable management simpler inside the case. At $120, that's $25 off the $145 list price for an 850W, 80 Plus Gold-rated unit from Corsair's RMe line. Buy Now at Best Buy

A fully modular PSU means you only connect the cables you actually need, which keeps your build cleaner and airflow less restricted. At 650W with 80 Plus Bronze efficiency, it covers most mid-range builds without paying for headroom you won't use. Buy Now at Newegg

A 1U form factor PSU is a fairly specific buy, so this is mainly useful if you're building or upgrading a compact rackmount or small form factor system that can't fit a standard ATX unit. At 350W, it handles light server or workstation loads without taking up more space than necessary. Buy Now at Newegg

A solid pick if your PC build includes a power-hungry GPU or you're planning to upgrade components down the line, since 850W gives you enough headroom for high-end hardware without constantly running near the unit's limit. Buy Now at Newegg

A direct replacement for the M90z all-in-one, so it's mainly useful if your original power supply has failed and you want to avoid buying a whole new unit. Buy Now at Newegg

Designed as a direct replacement for Dell PowerEdge server PSUs, this is a practical option if you're maintaining or upgrading rack hardware without paying Dell's service pricing. Buy Now at Newegg

A dual-channel linear regulated power supply is the kind of bench tool that matters when you're working on audio circuits, RF projects, or any application where switching noise from a standard PSU would interfere with your results. Buy Now at Newegg

A budget-friendly option for anyone building or upgrading a basic desktop PC that doesn't need a high-wattage unit, the 450W output covers most entry-level to mid-range builds without paying for headroom you won't use. Buy Now at Newegg

Designed specifically for HP ProLiant DL380 G6 and G7 servers, this is a straightforward replacement option if your current PSU has failed or you need a redundant unit without going through HP's official supply chain pricing. Buy Now at Newegg