Case Power Supply Deals & Case Power Supplies for Sale

A direct replacement option for anyone repairing or upgrading a small form factor PC that uses a proprietary Dell or HP power supply, where standard ATX units won't fit. Buy Now at Newegg

A solid option if you're building or upgrading a mid-range PC and need a reliable PSU without overspending — 650W covers most single-GPU builds comfortably, and FSP is a well-regarded manufacturer in the power supply space. Buy Now at Newegg

A 1U form factor makes this a practical fit for rack-mounted servers or custom builds where vertical space is limited, and 400W covers most single-CPU server configurations without overprovisioning. Buy Now at Newegg

A purpose-built option for anyone setting up a cryptocurrency mining rig or running multiple GPUs, where standard consumer PSUs often fall short on sustained load capacity. Buy Now at Newegg

A 2U form factor makes this a practical fit for rack-mounted servers and compact builds where a standard ATX PSU won't physically fit, and 600W gives you enough headroom for most mid-range server configurations. Buy Now at Newegg

Modular cabling means you only connect what your build actually needs, keeping airflow cleaner and cable management simpler — a worthwhile feature if you're putting together a mid-to-high-end PC and want to avoid a rat's nest behind the motherboard tray. The ATX 3.1 spec also adds native 16-pin connector support for current Nvidia GPUs, so you won't need an adapter. Buy Now at Newegg

A solid option for engineers or hobbyists who need a reliable 24V DC bench or embedded power supply, particularly for industrial-grade applications where TDK-Lambda's reputation for build quality matters. Buy Now at Newegg

A solid pick for IT teams running HPE-compatible networking or server equipment that needs a reliable high-wattage DC power supply in their infrastructure stack. Buy Now at Newegg

A drop-in redundant PSU module suited for server builds or rack systems where power supply failover is a requirement, keeping the system running if one unit fails. Buy Now at Newegg

A high-wattage power supply designed for HPE Aruba networking hardware, so it's mainly relevant if you're running compatible Aruba switches or chassis that require this specific unit for redundancy or capacity upgrades. Buy Now at Newegg

A straightforward pick for anyone running an X226, X225, or X345 system that needs a replacement or spare power supply without sourcing an OEM unit directly from the manufacturer. Buy Now at Newegg

A straightforward pick for anyone running a Dell M1000E blade server chassis that needs a replacement or redundant power supply unit. Buy Now at Newegg

A practical option if you're running IBM X3550 or X3650 M4/M5 servers and need a replacement or spare power supply unit without going through IBM's typically pricier official channels. Buy Now at Newegg

A 120W power supply in this form factor is generally aimed at compact or low-power builds where a full-size ATX unit won't fit, making it a reasonable option if you're working within a tight case or replacing a failed unit in a small form factor system. Buy Now at Newegg

A compact option suited to low-power builds like HTPCs or basic office desktops that don't need much headroom beyond standard components. Buy Now at Newegg

A straightforward pick for builders or repair techs who need a replacement ATX power supply and want to source it through Newegg, particularly if it fits an existing build where the form factor and wattage are already confirmed. Buy Now at Newegg

Designed for LED stage lighting setups, this dual-voltage (12V/24V) power supply works well as a replacement unit if your original supply has failed or you're building out a DIY lighting rig that needs a reliable 160W source. Buy Now at Newegg

A drop-in replacement for the Lenovo P720 or P520 if your original PSU has failed and you want to avoid the guesswork of finding a compatible third-party unit. Buy Now at Newegg

A straightforward replacement option for Dell Studio One 1909 all-in-one desktop owners dealing with a failed or underperforming power supply unit. Sourcing OEM-spec parts for older all-in-ones can be tricky, so having a direct match at 130W helps avoid compatibility guesswork. Buy Now at Newegg