Case Power Supply Deals & Case Power Supplies for Sale

A 40-amp, 5V rail at 200W output is a fairly specific spec that suits LED strip installations, Raspberry Pi clusters, or other low-voltage DC projects that need consistent, high-current delivery without cobbling together multiple smaller supplies. Buy Now at Newegg

A 2,000W ATX power supply is overkill for most builds, but if you're running dual GPUs, extreme overclocks, or a heavily loaded workstation, having headroom on your wattage keeps your system stable under load. Buy Now at Newegg

Designed as a direct replacement for Lenovo P500, P700, and P710 workstation and server units, this power supply is the part to look for if yours has failed and you want an OEM-matched component rather than a third-party alternative. Buy Now at Newegg

A solid option if you're building or upgrading a server or workstation and need a reliable, high-efficiency PSU without paying for a new retail unit. The 80+ Platinum rating means it runs at 90%+ efficiency under typical loads, which adds up on hardware that stays powered around the clock. Buy Now at Newegg

A solid pick for small form factor server builds or rack-mounted systems that require a Common Redundancy Power Supply form factor, where standard ATX units simply won't fit. Buy Now at Newegg

A straightforward option for anyone building or repairing a server rack who needs a reliable 500W module to slot into an existing 5500V-series chassis without sourcing it through enterprise channels. Buy Now at Newegg

A straightforward upgrade for anyone building or repairing a mid-range desktop PC, especially if your current unit is underpowered for a dedicated GPU. Buy Now at Newegg

A straightforward upgrade or replacement option for Dell workstation and tower users who need more headroom for power-hungry components like discrete GPUs or additional drives. Buy Now at Newegg

A direct replacement for HP ProDesk 400, 600, and 800 G1/G2 SFF systems that need a power supply swap, whether yours has failed or you're upgrading components that demand more wattage. Buy Now at Newegg

A fully modular design means you only connect the cables your build actually needs, which keeps airflow cleaner and cable management much simpler than with non-modular units. The 80 Plus Gold efficiency rating puts it in a solid range for mid-range to high-end PC builds where you want reliable, efficient power without paying for more wattage than you'll use. Buy Now at Newegg

Designed as a direct replacement for specific systems rather than a general-purpose PSU, this 580W unit is worth bookmarking if you're tracking down a compatible power supply for a proprietary build where standard ATX options won't fit. Buy Now at Newegg

A direct replacement power supply for IBM/Lenovo X3250 M3, M4, and M5 servers, so it's mainly useful if you're maintaining or repairing one of those specific units and need a compatible 300W swap-in. Buy Now at Newegg

A 750W Bronze-rated PSU from ASRock at $50 covers most mid-range PC builds comfortably, and at $35 off the $85 list price, it's a reasonable option if you're budgeting a new build or replacing a failing unit. Buy Now at Newegg

A direct replacement for the Dell XPS 8910, 8920, and 8930 desktops, this 460W unit is worth looking at if your original power supply has failed and you want a compatible swap without hunting down specs yourself. Buy Now at Newegg

A workstation power supply upgrade worth knowing about if your HP Z4 G4 is showing signs of power instability or you're adding components that push beyond your current unit's capacity. Buy Now at Newegg

A direct replacement for failed or aging power supplies in compatible QNAP NAS units, which makes it a straightforward buy if your current PSU is showing signs of failure and you want to stick with an OEM part rather than a third-party alternative. Buy Now at Newegg

A server-grade replacement PSU that fits the R905 chassis, so if you're maintaining or upgrading existing Dell PowerEdge rack infrastructure, this is a straightforward way to add redundancy or replace a failed unit without sourcing through enterprise channels. Buy Now at Newegg

A solid pick if you're building or repairing a 1U rackmount system and need a compact, low-profile PSU that fits the form factor without requiring a full-size unit. Buy Now at Newegg

A straightforward option for anyone building or upgrading a system who needs a reliable ATX power supply without overcomplicating the selection process. Buy Now at Newegg