Newegg Case Power Supply Deals & Case Power Supplies for Sale

Data center and server room admins keeping older HP ML350G4 towers running will want a reliable replacement on hand, since sourcing OEM-spec power supplies for legacy servers gets harder every year. It's a straightforward swap for anyone maintaining existing infrastructure rather than replacing the whole unit. Buy Now at Newegg

Anyone replacing a dead power supply in a Dell OptiPlex SFF desktop (3040, 5040, or 7040) needs a unit that matches the original form factor exactly, and this one's built to drop right in without modifying the case or connectors. Buy Now at Newegg

Handy for repairing or upgrading an OptiPlex GX620 tower, since original Dell power supplies can be tricky to match with generic replacements. Buy Now at Newegg

Anyone whose Lenovo all-in-one desktop has stopped powering on will want this as a direct replacement rather than a universal substitute, since AIO power supplies are built to fit that specific slim form factor. It's a straightforward fix if you've confirmed the power supply is actually the failing component. Buy Now at Newegg

Data center techs and anyone maintaining older Cisco UCS server infrastructure will want this on hand as a spare, since sourcing OEM power supplies for the C220 M3 gets harder as the model ages. Newegg has it in stock if your rack needs a reliable replacement without waiting on a special order. Buy Now at Newegg

Fits specific Dell Dimension desktop models that need an exact replacement, so check your tower's original part number before ordering since ATX supplies aren't always interchangeable across brands. Buy Now at Newegg

Anyone running a home server or workstation build that needs redundant power will want this on their radar, since 300W server supplies like this are built for continuous operation in ways consumer PSUs aren't designed to handle. It's a practical pick if you're setting up a NAS or small server rack and want hardware rated for that kind of sustained workload. Buy Now at Newegg

Anyone with an older HP Pavilion P7-1148P or P7-1203 that's suddenly refusing to power on can swap in this replacement without hunting down a discontinued original from HP. Buy Now at Newegg

Server admins keeping older MSA1000 storage arrays running will want a reliable replacement on hand, since power supplies tend to be the first component to fail in these units. It's a straightforward swap that can save you from replacing the whole array when age catches up with the original unit. Buy Now at Newegg

Anyone running a Dell PowerConnect M4600, M4650, M4200f, or M4900c switch will want a spare on hand, since a failed power supply can take your network hardware offline until it's replaced. Buy Now at Newegg

Workstation builds like these need matched replacement power, and this 685W unit is built specifically for the T3610, T5610, and T5810, so you won't run into compatibility guesswork when swapping out a failing PSU. Buy Now at Newegg

Anyone maintaining or building out server racks will want a reliable 1U power supply on hand, and this Delta unit is a straightforward replacement option for equipment that calls for a DPS-250AB-44 B spec. Buy Now at Newegg

Space-constrained builds running a mid-range gaming rig are the sweet spot here, since the SFX form factor squeezes 750W of Gold-rated efficiency into a case where a standard ATX supply won't fit. Buy Now at Newegg

Anyone running a heavily loaded P720 or P520 workstation with multiple GPUs or drives will want the headroom this 690W supply provides, since underpowered systems tend to throttle or crash under sustained workloads. Buy Now at Newegg

Server builders and folks replacing a failed unit will want to check the specs match their board, since this is a straightforward 500W supply without the bells and whistles of consumer-grade units. Buy Now at Newegg

Data centers running Cisco UCS blade server chassis need reliable, redundant power, and this 2,500W supply is built specifically for that setup rather than as a generic replacement. Newegg carries it for shops looking to expand capacity or swap out a failing unit without waiting on a Cisco service contract. Buy Now at Newegg

Alienware VR-ready graphics cards can strain a standard PSU, so this dock adds dedicated 460W power for the card without touching your system's main supply. Handy for anyone running a high-draw GPU in an Alienware rig that needs extra headroom. Buy Now at Newegg

Data centers and IT shops running older HP ProLiant DL320e Gen8 servers will want this on hand as a replacement or spare, since matching the exact power supply spec keeps the server running within its original design tolerances. Newegg carries it for those maintaining legacy hardware without needing to source parts from HP directly. Buy Now at Newegg

Anyone building or upgrading a mid-to-high-end gaming rig will want the headroom this 850W supply provides, especially with a power-hungry GPU in the mix. Newegg's price makes it a reasonable way to future-proof your build without overspending on wattage you won't use yet. Buy Now at Newegg