Newegg Case Power Supply Deals & Case Power Supplies for Sale

Handy for anyone running a Dell PowerEdge R320 or R420 server who needs a reliable replacement or backup power supply without hunting down proprietary parts from Dell directly. Buy Now at Newegg

Compact 1U form factors like this one are built for rackmount and slim ITX builds where standard ATX power supplies simply won't fit, so it's worth a look if space inside your case is tight. The 400W output covers modest industrial or embedded setups without the bulk of a typical desktop PSU. Buy Now at Newegg

Handy for anyone rebuilding or upgrading a Dell desktop, since Dell's proprietary connectors often won't match standard aftermarket power supplies. Newegg has it if you need an exact replacement without hunting down a used original. Buy Now at Newegg

Server rack owners running disk arrays will appreciate the 530W capacity here, since it's built specifically to handle the power demands of multi-drive storage setups rather than general PC use. Buy Now at Newegg

Budget-conscious builders putting together a basic office or media PC will find this enough to run entry-level components without paying for wattage you won't use. Buy Now at Newegg

Worth a look if your desktop's stock power supply is on its way out or you're building a budget rig that doesn't need much more than 420W to run reliably. Buy Now at Newegg

Data centers and IT shops running IBM X3550 M5 servers will want this as a direct replacement or spare, since matching the exact power supply model keeps you from dealing with compatibility headaches down the line. Buy Now at Newegg

Anyone maintaining a Dell PowerEdge R450, R650, or R750 server can use this as a direct replacement or backup power supply without hunting down proprietary OEM parts. Buy Now at Newegg

Newegg has the Golden Field 800BLE 700W Power Supply for budget-conscious builders who need reliable wattage for a mid-range gaming rig without paying for high-end features you won't use. Buy Now at Newegg

Server builders and small-form-factor rigs benefit most here, since the 1U flex form factor squeezes into tight chassis where a standard PSU won't fit, and the 80-Plus Gold rating keeps efficiency high despite the compact size. Buy Now at Newegg

Small-form-factor NAS builds and mini-ITX rigs are exactly what this power supply is built for, so it's worth a look if standard ATX units simply don't fit your case. Newegg carries this one for the tight-space setups where you still need reliable, steady power without cramming in a full-size PSU. Buy Now at Newegg

Anyone running multiple GPUs for crypto mining or heavy compute work needs a PSU that can handle sustained high loads without cutting out, and 1,800W gives you the headroom to add rigs down the line instead of maxing out immediately. Buy Now at Newegg

Budget-friendly builds without power-hungry graphics cards are where this one fits, since 550W covers most basic desktop setups without paying for capacity you won't use. Buy Now at Newegg

This power supply is a straightforward pick if you've got a Lenovo ThinkCentre E93z all-in-one that's lost its original power brick or needs a replacement, since matching wattage and connector specs matters more than shopping around for generic alternatives. Newegg carries it for those exact compatibility needs without the guesswork of aftermarket universal supplies. Buy Now at Newegg

Data center and homelab builders running high-draw components will want the extra headroom this offers over standard consumer supplies. Newegg's version fits standard server chassis without needing a proprietary replacement down the line. Buy Now at Newegg

Data centers and home lab builders who need reliable redundant power will get the most out of this, since it's built to industry server standards rather than typical consumer PSU specs. It's a practical swap for anyone maintaining or upgrading existing server hardware where compatibility matters more than flashy features. Buy Now at Newegg

Data center admins running Aruba networking gear will want this on hand as a reliable replacement or redundant power supply option, since matching the exact model helps avoid compatibility headaches. Newegg carries it if your local IT supplier comes up short. Buy Now at Newegg

Gamers and PC builders running high-wattage setups with multiple GPUs or overclocked components will appreciate the 850W of stable headroom, and the RGB lighting lets it double as a visual centerpiece in cases with tempered glass panels. Buy Now at Newegg

Newegg has the Ace A140A Power Supply Unit for budget builders who just need reliable, no-frills power for a basic office or entry-level gaming rig without paying for features you won't use. Buy Now at Newegg