Case Power Supply Deals & Case Power Supplies for Sale

At Newegg, get the Corsair RMx Shift Series RM1200x Shift Fully Modular 80PLUS Gold ATX Power Supply for $160. That's a savings of $95 and it comes with a $30 Newegg gift card. Shipping is free. Buy Now at Newegg

Amazon offers the Corsair SF1000 Modular SFX Power Supply for $170. That's $100 off and the lowest price we've seen for it. Shipping is free. Buy Now at Amazon

Save on Rosewill power supply deals at Newegg, including discounts on ATX 3.0 and ATX 3.1 compatible models. Plus, get an extra 10% off on select models via coupon code "RWPC65". We've pictured the Rosewill CMG 850W 80+ Gold Full Modular Power Supply for $70 ($30 off) after the coupon code "RWPC65". Other deals include the Rosewill CMG5 1000W 80+ Gold Full Modular Power Supply for $100 ($20 off) and the Rosewill VMG 850W 80+ Gold Full Modular Power Supply for $90 with promo code "RWPC65". Free shipping applies. Shop Now at Newegg

A Shell Shocker deal, Newegg offers the Rosewill VMG 1000W 80+ Gold PCIe 5.1 Full Modular Power Supply for $89.99 with promo code "SSF68875". That's $20 off. Shipping is free. Deal ends today. Buy Now at Newegg

A straightforward replacement option if your HP 280 G2 desktop's power supply has failed, since finding an OEM unit that matches the original specs avoids the compatibility guesswork that comes with third-party alternatives. Buy Now at Newegg

A 1U form factor and 200W output makes this a straightforward fit for rack-mounted servers, network appliances, or compact builds where space is tight and power draw is modest. Buy Now at Newegg

A server-grade power supply swap for those building a home lab, NAS, or low-power server setup where reliability matters more than wattage headroom. The 300W output is suited to light workloads, and sourcing a dedicated server PSU like this typically gets you better build quality and efficiency than a budget consumer unit at a similar price. Buy Now at Newegg

A direct replacement option for Dell Precision or OptiPlex workstation builds that need more headroom for power-hungry GPUs or additional drives than a stock unit can provide. Buy Now at Newegg

Designed for Raspberry Pi 5 builders who want to power their board using a USB-C PD source rather than a dedicated power adapter, this module lets you draw stable power from a PD-compatible charger or power bank you likely already own. Buy Now at Newegg

A replacement PSU worth bookmarking if you're running a Dell RD-series rack server and need a spare or direct swap for a failed unit. The 550W output covers the standard power requirements for the RD440X, RD430X, and RD640, so compatibility guesswork is taken out of the equation. Buy Now at Newegg

Useful if your HP Pavilion 550-101a has stopped powering on or is showing signs of power failure, since OEM replacement supplies are generally more reliable than third-party alternatives for keeping the rest of your components stable. Buy Now at Newegg

A straightforward upgrade for anyone keeping an older Dell OptiPlex 7010 or 9010 desktop running, since power supplies are typically the first component to fail and replacements for small form factor cases aren't always easy to source. Buy Now at Newegg

Designed specifically for the Dell Optiplex 790 and 390 SFF form factor, this replacement PSU is a straightforward fix if your original unit has failed and you want to avoid the guesswork of finding a compatible third-party option. Buy Now at Newegg

Bench power supplies at this wattage are useful for electronics hobbyists, repair technicians, or anyone powering 24V devices like LED strips, motors, or small appliances without relying on batteries. Buy Now at Newegg

A solid pick if your workstation or server uses an L40 or L80 configuration and you need a direct replacement power supply rather than hunting for a universal fit that may or may not work with your setup. Buy Now at Newegg

A straightforward pick for electronics hobbyists or lab work where you need adjustable, regulated DC output without building your own bench supply. Buy Now at Newegg

Useful if you're running or building out a home lab or small server setup around HP DL380 G6 or G7 hardware, where finding a compatible replacement PSU at a reasonable price is often the main challenge. Buy Now at Newegg

A direct replacement option for HP Z420 workstation owners who need a reliable power supply swap without hunting down an OEM unit. The 600W output should cover most standard Z420 configurations running typical workstation components. Buy Now at Newegg

A straightforward pick for anyone running an older Dell Precision M4600, M4650, M4200f, or M4900c workstation that needs a replacement power supply, since these units can be hard to source through standard retail channels. Buy Now at Newegg

A straightforward pick for anyone rebuilding or replacing a failed PSU in a Dell desktop, particularly older OptiPlex or Inspiron towers that use Dell's proprietary connector layout. Buy Now at Newegg

Primarily useful if you're running an older HP ProLiant DL140 G3 server and need a replacement or spare power supply unit, since finding compatible 650W server PSUs for this generation of hardware can be tricky through standard retail channels. Buy Now at Newegg