Newegg Case Power Supply Deals & Case Power Supplies for Sale

Worth a look if you're building or upgrading a mid-range gaming rig, since 80 Plus Gold certification means less wasted energy and lower heat output compared to standard supplies. The 700W capacity gives you enough headroom for a solid GPU and CPU pairing without needing to size up. Buy Now at Newegg

Anyone building or upgrading a high-wattage Alienware desktop needs a PSU that matches Dell's proprietary specs, and this one delivers stable power without the compatibility guesswork of a generic third-party unit. Buy Now at Newegg

Suits anyone replacing a failing power supply in an HP ProDesk 400, 600, or 800 SFF from the G1 or G2 generation, since it matches the exact wattage and form factor those models need rather than a generic universal fit. Buy Now at Newegg

Older desktops or budget rebuilds that just need a reliable 300W supply without extra bells and whistles are the sweet spot here, especially if you're replacing a failed unit rather than chasing high-wattage headroom. Buy Now at Newegg

Small form factor desktops die more often from a failed power supply than anything else, so this is a straightforward fix if your ProDesk G3 or G4 won't power on. It's a direct replacement part, not a universal supply, so double check your model number before ordering. Buy Now at Newegg

Anyone running or upgrading an HP ProDesk desktop needs a replacement power supply that matches the original specs exactly, and this 180W unit is built to fit without modification. Newegg has it in stock for those dealing with a failed OEM supply rather than hunting down a generic substitute. Buy Now at Newegg

Keeping a spare on hand makes sense if your Pavilion 550-101a's power supply starts acting up, since matching the exact model number saves you from compatibility guesswork with a generic replacement. Buy Now at Newegg

Power supply failing on an older HP ProDesk 600 G5? This 180W SFF unit is a straightforward replacement part that gets a working desktop back up without the cost or hassle of buying a whole new machine. Buy Now at Newegg

Anyone building or upgrading a mid-to-high-end gaming rig will appreciate the fully modular cables for cleaner cable management, and ATX 3.1 compliance means it's built to handle the power spikes of newer graphics cards without extra adapters. Buy Now at Newegg

Anyone maintaining or expanding an S5300/S5500 V5 storage enclosure needs a matching power supply on hand, and this 600W unit is built specifically for that hardware rather than a generic replacement. Buy Now at Newegg

Anyone building a small form factor PC or replacing a failing unit needs a reliable power supply adapter, and FSP has a solid reputation for stable, efficient output that won't fry your components. Buy Now at Newegg

Anyone maintaining or upgrading an HP Z230 workstation will want a reliable source for this exact power supply, since matching the original spec avoids compatibility headaches down the line. Newegg carries it directly, which is handy when you need a replacement part without hunting through third-party listings. Buy Now at Newegg

Server closets and small business setups running critical hardware benefit most here, since redundancy means one PSU can fail without taking the whole system down. It's a practical add for anyone who's already dealt with an unexpected outage and doesn't want a repeat. Buy Now at Newegg

Data center techs and server builders replacing a failed power supply will want to check compatibility first, since this is a specific OEM part meant for Inspur server chassis rather than a universal fit. Buy Now at Newegg

This power supply module suits anyone running a Dell PowerEdge C6100 server who needs redundancy so a single failure doesn't take the whole system down. It's a straightforward swap for replacing a failed unit or building out backup capacity without touching the rest of your setup. Buy Now at Newegg

For anyone whose Dell Optiplex 3040 or 3050 is on its way out due to a failing power supply, this replacement unit gets it running again without having to buy a whole new machine. Buy Now at Newegg

Suits anyone building or repairing industrial equipment where a standard consumer power supply won't fit the specs or reliability needs, since it's designed for continuous-duty operation in demanding environments. It's a practical pick if you're maintaining legacy industrial systems and need a dependable replacement part rather than a general-purpose PC component. Buy Now at Newegg

Small form factor builds need a compact PSU that doesn't compromise on wattage, and this one fits cases where a standard ATX power supply simply won't clear the space. Buy Now at Newegg

Anyone piecing together a budget office build or replacing a dead PSU in an older prebuilt system will find this fits the bill without paying for wattage you don't need, since 250W covers basic setups without a dedicated graphics card. Buy Now at Newegg