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

Bestec ATS-150 Replacement Power Supply for $80

Tue, 18 Aug 2026 23:44:30 -0400

Anyone dealing with a dead or failing power supply on a compatible system will find this a straightforward swap, since it's built to match the original Bestec ATS-150 specs without any rewiring or case modifications. Buy Now at Newegg

Features

Compatible with Bestec ATS-150 ATX0300D5WC power supply units
Replaces ATX-1956D Rev B2 power supply units
Includes one integrated cooling fan
Lightweight 0.1 unit design
Durable grey exterior finish

Hengfu 55W 5V/6A, 12V/1A, -12V/1A Power Supply for $62

Tue, 18 Aug 2026 23:44:04 -0400

Anyone repairing or building an ATX-style system will want the dual voltage rails here, since the 5V/6A output covers standard low-power components while the 12V and -12V rails handle the rest. Buy Now at Newegg

Features

5V6A, 12V1A, -12V1A output
55W total power output
Model: HF55W-T-A

Dell OptiPlex 980 Mini Tower 305W Power Supply for $158

Tue, 18 Aug 2026 23:43:57 -0400

This power supply suits anyone maintaining an older OptiPlex 980 tower who needs a direct replacement without hunting down a discontinued part, and Newegg's stock makes it easy to find one that fits without guesswork on specs. Buy Now at Newegg

Features

305W power supply
30-day parts warranty
30-day labor warranty
Model: K345R

PWS-1K41P-SQ 1,400W Server Power Supply Kit for $235

Tue, 18 Aug 2026 23:43:46 -0400

Server admins building or upgrading redundant power setups will want this one, since the 1,400W capacity gives you headroom for high-draw configurations without needing a separate upgrade down the line. Buy Now at Newegg

Features

1400W high-output power capacity
Redundant power supply system
GPU workstation optimized performance
Compatible with PWS-1K41P-SQ servers
Model: PWS-1K41P-SQ

Supermicro PWS-741P-1R 740W Server Power Supply for $284

Tue, 18 Aug 2026 23:43:39 -0400

Server admins swapping out a failed power supply or building redundancy into a rack setup will want this on hand, since matching Supermicro's exact PSU spec avoids compatibility headaches with existing chassis. Buy Now at Newegg

Features

740W power capacity
Model: PWS-741P-1R

Cisco PWR-C1-1100WAC 1,100W Switch Power Supply for $146

Tue, 18 Aug 2026 23:43:39 -0400

Anyone managing rack-mounted Cisco switches will want a spare of this power supply on hand, since it swaps in directly for hardware failures without downtime for a full unit replacement. Buy Now at Newegg

Features

1100W power capacity
Compatible with 3850 Series switches
Model: 341-0561-01

HP DL388 G9 1,400W Server Power Supply for $87

Tue, 18 Aug 2026 23:43:28 -0400

Anyone maintaining or expanding a fleet of DL388 G9 servers will want a compatible power supply on hand for swaps and redundancy, and Newegg carries this 1,400W unit for exactly that purpose. Buy Now at Newegg

Features

1400W power capacity for high-performance servers
Model: 733428-101
Compatible with HPE DL388 G9 server series
Provides reliable redundant power supply
DPS-1400CB A hardware architecture

MSI MAG A750BE 750W 80+ Bronze Semi-Modular ATX Power Supply for $43 + free shipping

Tue, 18 Aug 2026 04:16:11 -0400

Building or upgrading a mid-range PC rig is where this fits best, since 750W with semi-modular cabling covers most single-GPU builds without extra cable clutter. At $43, that's $42 (about 49%) off the $85 list price. Buy Now at Amazon

Features

80 Plus Bronze certified efficiency
120mm low noise fan
Industrial grade electrical protection
DC-DC circuit architecture
Active PFC power factor correction

Juniper Networks JPSU-400W-AC 400W Power Supply for $886.20

Mon, 17 Aug 2026 23:44:17 -0400

Data center techs maintaining Juniper switch infrastructure will want this on hand as a direct replacement or hot-swappable spare, since matching the exact power supply model helps avoid compatibility headaches. Newegg carries the JPSU-400W-AC for those needing genuine Juniper hardware rather than a third-party equivalent. Buy Now at Newegg

Features

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

Delta 500W Hot-Swappable Server Power Supply Module for $98

Mon, 17 Aug 2026 23:38:59 -0400

Data center admins and server builders will want this on hand for redundancy setups, since the hot-swappable design lets you replace a failed unit without powering down the whole system. Buy Now at Newegg

Features

500W power output
Hot-swappable design for continuous server operation
Redundant power supply architecture
Model: DPS-500AB-9D

Powerup 500W ITX Flex NAS Power Supply for $218

Mon, 17 Aug 2026 23:38:38 -0400

Compact ITX Flex form factor makes this a good match for small NAS or HTPC builds where a standard ATX supply just won't fit, and 500W covers the needs of most home server setups without extra bulk. Buy Now at Newegg

Features

500W power capacity
Compact ITX Flex form factor
High-efficiency NAS performance
Model: DPS-500AB-2C

HP Pavilion 510-P050ST Desktop Power Supply for $80

Mon, 17 Aug 2026 23:38:27 -0400

Suits anyone whose Pavilion 510-P050ST won't power on or keeps shutting down unexpectedly, since a failing power supply is a common culprit. This is an exact-fit replacement, so you won't need to worry about compatibility or modifying your case. Buy Now at Newegg

Features

Compatible with HP Pavilion 510-P050ST
Single internal cooling fan
Grey exterior finish
Model: 510-P050ST

IBM 1,400W Server Power Supply for $151.70

Mon, 17 Aug 2026 23:38:23 -0400

Data center techs and server builders needing a reliable replacement or redundant power supply will find this useful, especially for maintaining uptime in rack-mounted systems. It's built to IBM's original specs, so compatibility with existing server hardware shouldn't be a concern. Buy Now at Newegg

Features

1400W power capacity
Compatible with X3850X6, X3950X6, X3750M4 servers
Fully tested for reliability
Replaces 69Y5910, 69Y5946, 39Y7233, 39Y7232

FSP FSP400-60FGGBA Industrial Control Power Supply for $224

Mon, 17 Aug 2026 23:38:17 -0400

This one's aimed at technicians building or repairing industrial control systems where a reliable, no-frills power supply matters more than aesthetics. It's worth keeping on hand if you deal with equipment that runs continuously in less-than-ideal conditions. Buy Now at Newegg

Features

Model: FSP400-60FGGBA
Industrial-grade power supply reliability
Designed for industrial control systems
Compatible with FSP400-60GCH, SS-400L1U, SPI350A8BB
Standardized industrial power output

Dell PowerEdge R805 700W Power Supply for $174

Mon, 17 Aug 2026 23:38:16 -0400

Server room techs and IT departments keeping older Dell PowerEdge R805 systems running will want this on hand as a replacement, since matching OEM power supplies aren't always easy to track down once a system ages out of mainstream support. Buy Now at Newegg

Features

700W maximum power output
Compatible with Dell PowerEdge R805 systems
Model: 7001423-J000

Cisco UCSB-PSU-2500ACPL 2,500W Power Supply for $365.20

Mon, 17 Aug 2026 23:37:34 -0400

Datacenter admins running Cisco UCS blade server chassis will want this as a direct replacement or spare, since matching the exact power supply model keeps redundancy and cooling specs consistent across the chassis. Buy Now at Newegg

Features

2500W power capacity
Model: 341-0441-01

600W Power Supply for Dell PowerEdge R450 R650 R750 for $234

Mon, 17 Aug 2026 23:37:19 -0400

Server refresh projects benefit most here, since this power supply is built specifically for Dell PowerEdge R450, R650, and R750 systems rather than being a generic fit. Newegg carries it if you need a compatible replacement without gambling on cross-brand compatibility. Buy Now at Newegg

Features

600W power output
Compatible with R450 R650 R750 servers
Model: L600E-S1

FSP250-60PLC 250W SFX Power Supply for $350

Mon, 17 Aug 2026 23:37:04 -0400

Small form factor builders needing reliable power without a bulky ATX unit will find this fits SFX cases while still delivering steady wattage for compact systems. Buy Now at Newegg

Features

250W power output
FSP NAS SFX form factor
24Pin, 20Pin, P8 connectors
Model: FSP250-60PLC

420W Power Supply Unit for $336

Mon, 17 Aug 2026 23:36:23 -0400

Anyone building a budget office PC or basic media server without a dedicated graphics card will find enough headroom here without paying for wattage you'll never use. Buy Now at Newegg

Features

420W power output capacity
Compatible with 300-1666-02 and 300-1906 series
Model: EPAP-420

MSI MPG A1250GS 1,250W Fully Modular 80+ Gold Power Supply for $236

Mon, 17 Aug 2026 23:36:22 -0400

Anyone building or upgrading a high-wattage rig with multiple GPUs will appreciate the 1,250W headroom, and the fully modular cabling keeps case airflow tidy since you only plug in what you need. Buy Now at Newegg

Features

1250W power output
80+ Gold efficiency rating
Fully modular cable design
ATX 3.1 and PCIe 5.1 ready
10 year manufacturer warranty