DealNews - Best Newegg Case Power Supply Deals & Case Power Supplies for Sale

Juniper Networks JPSU-400W-AC 400W Power Supply for $800

Tue, 08 Sep 2026 23:13:33 -0400

Data center admins running Juniper switches that need a compatible replacement or backup power supply will want this one, since it's built specifically for that hardware rather than a generic substitute. Buy Now at Newegg

Features

400W power capacity
Juniper Networks proprietary compatibility
Model: JPSU-400W-AC

700W 80 Plus Gold ATX Power Supply for $134

Tue, 08 Sep 2026 22:40:18 -0400

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

Features

700W power capacity
80 Plus Gold certified efficiency
ATX form factor compatibility

Dell Alienware 460W Power Supply Unit for $238

Mon, 07 Sep 2026 23:17:25 -0400

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

Features

460W power supply capacity
Compatible with Dell Alienware video card docks
Genuine OEM hardware DP/N:C3CMT
Model: HU460AM-00

HP 240W Power Supply for ProDesk 400 600 800 G1 G2 SFF for $70

Mon, 07 Sep 2026 23:13:53 -0400

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

Features

240W power supply capacity
Compatible with ProDesk 400 600 800 G1 G2 SFF
Model: 702307-001

FSP 300W Switching Power Supply FSP300-60PFN12V for $191

Mon, 07 Sep 2026 23:13:48 -0400

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

Features

300W maximum power capacity
FSP300-60PFN12V switching power supply
Standard SPI form factor
Model: FSP300-60PFN12V

L08417-002 250W Power Supply for HP ProDesk G3/G4 for $94

Mon, 07 Sep 2026 23:13:30 -0400

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

Features

250W power output
Compatible with ProDesk 400 600 800 G3 G4
90-day warranty included
Model: L08417-002

HP ProDesk 180W Power Supply Unit for $107

Mon, 07 Sep 2026 23:13:21 -0400

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

Features

180W power output
Compatible with ProDesk 400 G5, 280 G4, 600, 800 G3
Direct replacement power supply unit
Reliable internal power delivery
Model: PA-1181-6HY

HP Pavilion Desktop 550-101a Power Supply Unit for $80

Mon, 07 Sep 2026 23:12:03 -0400

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

Features

Power supply for HP Pavilion 550-101a
Single cooling fan included
Grey color finish
Model: 550-101a

HP ProDesk 600 G5 180W SFF Power Supply for $54

Mon, 07 Sep 2026 23:11:57 -0400

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

Features

180W power output
SFF compact form factor
Model: L08404-001

Lian Li EDGE 850W Fully Modular ATX 3.1 Power Supply for $120

Mon, 07 Sep 2026 23:11:30 -0400

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

Features

850W ATX 3.1 and PCIe 5.1 compliant power
Cybenetics Gold certified energy efficiency
L-shape 12V-2x6 cable design for cleaner builds
Fully modular design for streamlined cable management
Model: EG0850G.W

HSP600-D1205A 600W Power Supply for S5300 S5500 V5 Expansion Enclosure for $137

Mon, 07 Sep 2026 23:11:00 -0400

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

Features

600W power supply
Compatible with S5300, S5500, V5 enclosures
Model: HSP600-D1205A

FSP Power Supply Adapter for $210

Mon, 07 Sep 2026 23:10:45 -0400

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

Features

Model: FSP090-DMBB2
Model: FSP100-RAA
Model: FSP060-RAAK3
Model: FSP120-AAAN3

HP Z230 Workstation 400W Power Supply Unit for $113

Mon, 07 Sep 2026 23:10:38 -0400

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

Features

400W power output
Z230 Workstation compatibility
Model: 704427-001

1,280W Redundant Power Supply Unit for $334.70

Mon, 07 Sep 2026 23:09:36 -0400

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

Features

1280W power capacity
1U rack-mount form factor
Redundant power design
Model: PWS-1K28D-240

Inspur 550W Server Power Supply for $151.20

Mon, 07 Sep 2026 23:09:28 -0400

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

Features

550W power output
Compatible with Inspur M4 and M5 series
Model: PS-2551-5L

C6100 1,400W Server Redundant Power Supply Module for $90

Mon, 07 Sep 2026 23:09:12 -0400

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

Features

1400W high-capacity power output
Redundant design for continuous system uptime
Server-grade power supply module
Compatible with C6100 series systems
Model: PS-2142-2L LF

180W Power Supply for Dell Optiplex 3040/3050 for $99

Mon, 07 Sep 2026 23:08:50 -0400

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

Features

180W power output
Compatible with Server 3040 3050 systems
6-pin and 4-pin connectors
Model: L180AS-02

LPS-260W Industrial PC Power Supply for $112

Mon, 07 Sep 2026 23:08:16 -0400

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

Features

Model: LPS-260W

SFX Micro ATX Desktop Computer Power Supply for $56

Mon, 07 Sep 2026 22:36:20 -0400

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

Features

Supports 200W to 350W power outputs
Compatible with ATX and Micro ATX cases
Includes 20+4 pin connector
Compact SFX form factor
Model: N/A

Bestec ATX-250-12Z-D2R 250W 24-Pin Power Supply for $45.50

Sun, 06 Sep 2026 23:28:23 -0400

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

Features

250W power output
24-pin motherboard connector
HP P/N 410507-001
Model: ATX-250-12Z-D2R