Newegg Case Power Supply Deals & Case Power Supplies for Sale

Anyone running a Dell 3647, 660S, V270S, or D06S chassis whose power supply has died will want an exact replacement rather than a generic swap, and this one's built to match those specific machines. Buy Now at Newegg

This 800W supply is worth a look if you're building a mid-to-high-end gaming rig, since the modular cables let you skip the clutter of unused wires inside your case. Newegg carries it at a price point that suits builders who want headroom for a future GPU upgrade without paying for capacity they don't yet need. Buy Now at Newegg

Small-form-factor builders and HTPC projects benefit most here, since the compact Flex ATX size fits cases that a standard ATX PSU won't, and the modular cables cut down on clutter inside tight enclosures. Buy Now at Newegg

Suits anyone whose HP DX2300 desktop needs a straightforward power supply swap without hunting down a proprietary part, since it's built to the exact specs the system originally shipped with. Newegg carries it as a direct replacement, so you're not stuck guessing at compatibility with a generic unit. Buy Now at Newegg

Data center and server builders needing reliable rackmount power will find this 1U supply fits standard enclosures without eating into your available space, and the 600W output covers most single-server setups without overkill. Buy Now at Newegg

Data center hobbyists and small server builders needing reliable rack-mount power will find this 1U unit fits tight enclosure spaces without sacrificing wattage. It's a solid pick if you're replacing a failed OEM supply or building a compact home lab setup where standard ATX units simply won't fit. Buy Now at Newegg

Server closets and small business setups running Dell R420 hardware need exact-fit replacement parts, and this power supply matches the OEM spec without the guesswork of a third-party equivalent. Buy Now at Newegg

Server rooms and high-draw PC builds need power delivery that won't buckle under sustained load, and this 830W unit gives you enough headroom for a solid gaming rig or workstation without paying for capacity you'll never use. Buy Now at Newegg

Data center and server-room builds where rack space is tight will benefit most from the 1U modular design, since it saves clearance while letting you skip unused cable runs. Buy Now at Newegg

This power supply suits desktop builds needing a straightforward 10-pin PSU replacement without stepping up to a pricier modular unit, and the 180W-500W range gives you flexibility depending on your system's actual draw. Buy Now at Newegg

This 350W power supply suits budget builds or basic office PCs that don't need extra headroom for graphics cards or extra drives, so check your system's wattage needs before buying. It's a straightforward, no-frills option if you're replacing a failed unit or building something simple from scratch. Buy Now at Newegg

Miners running Chia rigs need steady, high-wattage output without the noise and inefficiency of gaming-focused units, and this power supply is built specifically for that kind of continuous load. Buy Now at Newegg

Anyone maintaining older HP ProLiant ML150 G6 or ML330 G6 servers will want this on hand as a replacement or backup, since matching power supplies for legacy server hardware get harder to track down as the equipment ages. Buy Now at Newegg

Server upgraders working with the PowerEdge T630 or T640 will want this on hand since it's the specific board needed to add GPU power supply capacity to those chassis, and sourcing the exact part for older Dell servers isn't always straightforward. Buy Now at Newegg

A practical pick for anyone repurposing an old ATX power supply to run 12V equipment like LED strips, fans, or DIY electronics projects, since it lets you power on the PSU without needing a motherboard. Buy Now at Newegg

Anyone troubleshooting a computer that won't boot can plug this in to quickly rule out a dead power supply before replacing other parts, saving you from guessing which component actually failed. Buy Now at Newegg

Server admins running a Dell PowerEdge R510, R910, or T710 will want this on hand as a direct replacement when a power supply fails, since matching your exact model keeps the system's redundancy and airflow design intact. Buy Now at Newegg

Worth grabbing if your CP5141 desktop's power supply has died or you're building a replacement rig, since matching the original wattage and form factor means you won't run into compatibility headaches. Buy Now at Newegg

Small-form desktop upgrades or repairs are where this fits best, since it's built specifically to replace a failed OptiPlex tower PSU without hunting for a compatible generic unit. Buy Now at Newegg