Case Power Supply Deals & Case Power Supplies for Sale

A solid option if your home lab or workstation runs multiple drives, GPUs, or other power-hungry components and you need a reliable way to add or replace a server-grade PSU without paying enterprise prices. Buy Now at Newegg

Useful if you're building or upgrading a PC and need a PSU that covers both legacy 4-pin and newer 10-pin connector standards, giving you flexibility across different motherboard and component generations. Buy Now at Newegg

This fully modular PSU suits anyone building or upgrading a higher-end gaming rig that needs stable, efficient power delivery, with ATX 3.1 compliance for newer graphics cards. It's currently priced at $180, matching its list price, so there's no discount to factor in right now. Buy Now at Best Buy

Best Buy has the Corsair RM850e for $140, a fully modular 850W supply with 80+ Gold efficiency that suits builders running a mid-to-high-end GPU and CPU combo who want clean cable management. This one's priced at its regular $140 list, so there's no current markdown to note. Buy Now at Best Buy

Older desktops with a TFX form factor need a supply that actually matches the case dimensions, and this 500W unit gives you enough headroom for a basic build without hunting through discontinued OEM parts. Buy Now at Newegg

Server workstations like the T5600, T5810, or T7810 that suddenly lose power often just need a replacement supply rather than a full repair, and this one's built to spec for those exact models. It's a straightforward fix for anyone running these Dell towers as a home server or workstation who wants OEM-matched wattage instead of guessing on compatibility. Buy Now at Newegg

Anyone maintaining or repairing Advantech-based industrial control systems will want this on hand as a direct-fit replacement, sparing you the downtime that comes with sourcing an OEM part. Newegg carries it for those cases when a spare needs to be ready before a failure takes a production line offline. Buy Now at Newegg

Anyone running a bitcoin miner needs a power supply built to handle the constant, heavy load, and 1,600W gives you enough headroom to run demanding rigs without straining the unit. Buy Now at Newegg

This redundant power supply suits anyone running a Supermicro 1U server rack who needs backup power protection without downtime if one unit fails, since the dual configuration keeps things running while you swap out the faulty module. Buy Now at Newegg

Small form factor builds need PSUs that fit tight cases without sacrificing wattage, and this 240W unit from Newegg covers that need for compact desktops or budget office rigs that don't demand high-end power output. Buy Now at Newegg

Pairs well with a mid-range build where you're not pushing high-end graphics cards, and the 80Plus Gold rating means less wasted energy and heat compared to standard efficiency units. Buy Now at Newegg

Server admins running Dell R610 setups will want this on hand as a redundant or replacement PSU, since matching the original 717W spec keeps your power configuration balanced and avoids compatibility headaches. Buy Now at Newegg

Anyone managing a C9000 or C9010 network chassis will want a reliable replacement or backup on hand, since power supply failures can take down critical infrastructure with little warning. Buy Now at Newegg

Network admins running Cisco Catalyst switches that require this power module will want a reliable replacement or spare on hand, especially for setups where downtime isn't an option. Newegg carries the Cisco PWR-C6-125WAC if your current supply needs swapping out or you're building in redundancy. Buy Now at Newegg

Fully modular cabling makes this a solid pick if you're routing a build in a tight case or just want to skip the cable clutter, and 80+ Gold certification means decent efficiency for a mid-to-high wattage supply. At $90, that's $60 (40%) off the $150 list price. Buy Now at Amazon

Anyone replacing a dead PSU in an older Dell Optiplex tower will want a direct-fit option like this rather than fiddling with connector adapters or non-standard sizing, and Newegg carries it for those exact repairs. Buy Now at Newegg

Newegg carries this replacement power supply for anyone whose HP Pavilion P7-1148P or P7-1203 desktop is failing to boot or shutting down unexpectedly due to a dying PSU, saving you the cost and hassle of replacing the whole tower. Buy Now at Newegg

Data center techs and server rebuild projects will get the most use out of this, since it's built to replace failed power supplies in compatible rack servers rather than serve as a general-purpose PC unit. Buy Now at Newegg

Small form factor builds need PSUs that fit tight spaces without skimping on wattage, and this SFX unit gives you 250W in a compact housing suited for mini-ITX cases and slim desktop builds. Buy Now at Newegg