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

B515 B520 300W Mini-ITX Power Supply for $151

Tue, 11 Aug 2026 23:50:26 -0400

A compact 300W power supply built for Mini-ITX cases, which makes it a practical pick if you're building or upgrading a small form factor PC and need a unit that actually fits the space. Buy Now at Newegg

Features

Mini-ITX form factor
300W power output
Model: PAC300D1205-C

FSP 600W 2U Server Power Supply for $207

Tue, 11 Aug 2026 23:49:33 -0400

A 2U form factor makes this a practical fit for rack-mounted servers and compact builds where a standard ATX PSU won't physically fit, and 600W gives you enough headroom for most mid-range server configurations. Buy Now at Newegg

Features

600W power output
2U server form factor
Silent operation
8-pin EPS connector
Model: FSP600-60WS2

FSP 300W Industrial Computer Power Supply for $153

Tue, 11 Aug 2026 23:49:10 -0400

A straightforward pick for anyone building or repairing an industrial PC, embedded system, or point-of-sale terminal that needs a reliable, no-frills power supply rated for continuous operation. Buy Now at Newegg

Features

300W power output capacity
Industrial grade build quality
FSP300-60ATV model series
AC 220V-230V input voltage compatibility
Model: FSP300-60ATV

DPS-220AB-6A 220W Power Supply Unit for $76

Tue, 11 Aug 2026 23:49:08 -0400

A direct replacement option for anyone repairing or upgrading a small form factor PC that uses a proprietary Dell or HP power supply, where standard ATX units won't fit. Buy Now at Newegg

Features

220W power output
Model: DPS-220AB-6A

1,000W Power Supply for U25 and U45 for $329

Tue, 11 Aug 2026 23:49:06 -0400

A direct replacement or upgrade option for anyone running a U25 or U45 system that needs more headroom for power-hungry components, with 1,000W covering most high-end GPU and CPU combinations without issue. Buy Now at Newegg

Features

1000W power output
Compatible with U25 U45
Model: 300-1800-02
Model: 300-1800-03

ATX Mining Power Supply for $210

Tue, 11 Aug 2026 23:48:38 -0400

A purpose-built option for anyone setting up a cryptocurrency mining rig or running multiple GPUs, where standard consumer PSUs often fall short on sustained load capacity. Buy Now at Newegg

Features

1600W to 2600W power output capacity
ATX form factor for standard compatibility
Supports up to 8 high-performance GPUs
Optimized for high-efficiency cryptocurrency mining
Stable power delivery for intensive mining workloads

5V 30A 150W Universal Switching Power Supply for $35

Tue, 11 Aug 2026 23:48:27 -0400

A solid pick for DIY electronics projects, LED strip setups, or any application where you need stable 5V DC power at higher amperage without building your own supply. Buy Now at Newegg

Features

5V 30A power output
150W regulated switching power
Universal compatibility for LED and electronics
Efficient power conversion
Compact transformer design

NPS-400CB B 400W 1U Server Power Supply for $124

Tue, 11 Aug 2026 23:48:17 -0400

A 1U form factor makes this a practical fit for rack-mounted servers or custom builds where vertical space is limited, and 400W covers most single-CPU server configurations without overprovisioning. Buy Now at Newegg

Features

400W power output
1U server form factor
24+8+8 pin motherboard connectors
2 SATA power connectors
3 large D-type peripheral connectors

API 1,000W Power Supply for $135

Tue, 11 Aug 2026 23:48:05 -0400

A 1,000W power supply gives you enough headroom for high-end GPU and CPU combinations, plus any future upgrades you might add down the line. Newegg has this one listed, so it's worth checking if you're building or upgrading a demanding gaming or workstation rig. Buy Now at Newegg

Features

1000W power supply output
Compatible with U25 and U45 series
API4FS35-470G power architecture
Model: API4FS35

FSP 650W Power Supply for $191

Tue, 11 Aug 2026 23:48:05 -0400

A solid option if you're building or upgrading a mid-range PC and need a reliable PSU without overspending — 650W covers most single-GPU builds comfortably, and FSP is a well-regarded manufacturer in the power supply space. Buy Now at Newegg

Features

Model: FSP650-80GLC
650W total power output
High-efficiency power delivery
Reliable system stability
Standardized ATX form factor

Corsair RM850e 850W Power Supply for $142

Tue, 11 Aug 2026 23:47:10 -0400

Solid pick for a mid-to-high-end PC build where you want a reliable, fully modular unit with enough headroom for a discrete GPU without overpaying for wattage you'll never use. Buy Now at Newegg

Features

850W maximum power output
ATX 3.1 compatible power delivery
Cybenetics Gold energy efficiency
Full modular cable design
Model: RM850e

650W 3U Redundant Power Supply for $246

Tue, 11 Aug 2026 23:46:40 -0400

Redundant power supplies are mainly relevant for servers or workstations where downtime from a single PSU failure isn't acceptable, so this is aimed at IT environments or home lab setups running critical workloads. The 3U form factor means you'll want to confirm it fits your rack chassis before ordering. Buy Now at Newegg

Features

650W redundant power supply
3U form factor
Model: R3G-6650P

IBM 94Y8251 Flex System 2,500W Power Supply for $124

Tue, 11 Aug 2026 23:45:44 -0400

A high-wattage redundant power supply built for IBM Flex System chassis, so it's primarily useful if you're running or expanding an existing Flex System environment and need a replacement or additional PSU to meet your power budget. Buy Now at Newegg

Features

2500W power supply capacity
Model: 94Y8251

GW-EPS1U250HC-DH 250W 1U Server Power Supply for $124

Tue, 11 Aug 2026 23:45:21 -0400

A 1U form factor limits your options considerably, so this 250W unit is worth noting if you're building or maintaining a rack-mounted server where space is the primary constraint. Buy Now at Newegg

Features

250W power output
1U form factor
Model: GW-EPS1U250HC-DH

Power Supply for Dell 3020 9020 T20 T30 T1700 3620 290W for $99

Tue, 11 Aug 2026 23:44:56 -0400

A straightforward pick if your Dell OptiPlex or Precision desktop's power supply has failed and you want a direct replacement without the guesswork of compatibility research — this unit is built specifically for the 3020, 9020, T20, T30, T1700, and 3620 models. Buy Now at Newegg

Features

290W power output
Compatible with 3020 9020 T20 T30 models
Supports T1700 3620 workstations
Replaces AC290EM-01 L290AM units
Model: NFX6T

FSP industrial power supply for $124

Tue, 11 Aug 2026 23:44:03 -0400

Industrial-grade power supplies from FSP are built for continuous-duty applications and tighter voltage tolerances than typical consumer units, making this a practical option if you're running a home server, NAS, or workstation that stays on around the clock. Buy Now at Newegg

Features

Model: FSP250-60GTA(PF)

Flu2-40-6322 Power Supply Board for $281

Tue, 11 Aug 2026 23:40:22 -0400

A replacement power supply board for those dealing with a failed or failing PSU in a compatible unit, rather than replacing the whole device. Buy Now at Newegg

Features

Model: FLU2-40-6322

600W Server Power Supply for Sun X3-2 and X4170M3 for $135

Tue, 11 Aug 2026 23:39:30 -0400

A practical pick if you're maintaining or upgrading Oracle Sun X3-2 or X4170 M3 servers and need a compatible replacement PSU without sourcing directly from Oracle. Buy Now at Newegg

Features

600W power capacity
Designed for Sun X3-2 servers
Compatible with Sun Fire X4170M3 systems
Model: AA27020L

Dell Optiplex GX620 and PowerEdge SC440 400W Power Supply Replacement for $80

Tue, 11 Aug 2026 23:39:10 -0400

A direct replacement for aging Dell Optiplex GX620 and PowerEdge SC440 units that need a new power supply, this is a fairly specific part that's worth bookmarking if you're maintaining older Dell hardware. Buy Now at Newegg

Features

400w power supply replacement
Compatible with Dell Optiplex GX620 Mini Tower
Compatible with PowerEdge SC440
Integrated cooling fan
Color: Grey

AT Power Supply Replacement for $101

Mon, 10 Aug 2026 23:32:35 -0400

Older desktop builds that use AT-style power supplies (rather than the modern ATX standard) are rare to find parts for, so this is a practical option if you're restoring or maintaining a vintage PC from the late 1980s or 1990s. Buy Now at Newegg

Features

Model: SPI-300G
Compatible with AT power supplies
Supports PS7271/AT, LP2-4250F, ZKS-250A