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

HP 250W ProDesk G3 G4 Power Supply for $67

Sun, 13 Sep 2026 23:02:46 -0400

Anyone building a replacement or backup unit for an HP ProDesk small form factor system will want this on hand, since sourcing the right wattage and connector layout for these compact cases isn't always straightforward. Newegg carries it if your original supply fails or you're upgrading components that need steady, reliable power. Buy Now at Newegg

Features

250W power output
Compatible with ProDesk 400 600 800 G3 G4
Model: PA-2251-5

Delta Electronics DS2000-3-002 Server Power Supply for $393

Sun, 13 Sep 2026 23:02:27 -0400

The DS2000-3-002 suits anyone building or maintaining a server rack who needs a reliable replacement power supply without going through the original manufacturer's markup. Newegg carries it for buyers who want a straightforward, no-frills component swap rather than a full system upgrade. Buy Now at Newegg

Features

Model: DS2000-3-002

DPS-400AB-12A 400W 1U Flex Power Supply for $201

Sat, 12 Sep 2026 23:09:21 -0400

For anyone building or repairing a compact 1U server setup, this Flex power supply delivers a reliable 400W in a form factor that fits tight rackmount chassis without modification. Buy Now at Newegg

Features

400W power output
1U Flex ATX form factor
Model: DPS-400AB-12 A

Powerup 300W L305P-03 Power Supply for $214

Sat, 12 Sep 2026 23:08:53 -0400

Anyone rebuilding an older desktop or replacing a failing PSU can grab this as a straightforward, no-frills swap without paying for wattage or features you don't need. Buy Now at Newegg

Features

300W power capacity
Model: L305P-03

Segotep GP600P 500W 80 Plus Platinum Power Supply for $192

Sat, 12 Sep 2026 23:08:19 -0400

For anyone building a mid-range PC that still needs reliable, efficient power delivery, this supply's 80 Plus Platinum rating means less wasted energy and heat compared to standard 80 Plus units, without paying for wattage you don't need. Buy Now at Newegg

Features

80PLUS Platinum efficiency certification
500W total power output
Designed for high-performance RTX 2080Ti systems
Broad silence cooling technology
Model: GP600P

Montech Titan 1,200W Power Supply for $229

Sat, 12 Sep 2026 23:07:45 -0400

Anyone building a high-performance rig with power-hungry GPUs will want the headroom this 1,200W supply provides, so you're not stuck upgrading again down the line. Buy Now at Newegg

Features

1200W output with 80 PLUS PLATINUM efficiency
Fully modular cable design for clean builds
135mm fan for silent cooling
PCIe 5.1 and 12V-2x6 support
Model: TITAN PLA 1200

FSP Hydro Ti PRO 1,000W 80 Plus Titanium ATX 3.1 PCIe 5.1 Modular Power Supply for $260

Sat, 12 Sep 2026 23:07:29 -0400

Built for high-end systems pulling serious wattage, the 80 Plus Titanium rating means less heat and lower electricity costs over the life of the PSU compared to lower-tier efficiency ratings, and full modular cabling keeps your build clean. Newegg has it at $260, which is $40 (13%) off the $300 list price. Buy Now at Newegg

Features

1000W power capacity
80 Plus Titanium efficiency rating
ATX 3.1 and PCIe 5.1 compliant
Fully modular cable management
Model: HTI-1000M-GEN5

HP G10 500W Power Supply for $247

Sat, 12 Sep 2026 23:07:08 -0400

Server rack builds and workstation upgrades that need reliable, consistent power are where this one fits best, especially if you're already running HP-compatible hardware and want a straightforward replacement or backup unit. Buy Now at Newegg

Features

500W power output capacity
Compatible with HP G10 servers
Model: 865408-b21

Vinpower Digital 450W Switching Power Supply for $692

Sat, 12 Sep 2026 23:06:34 -0400

This power supply suits anyone building or repairing a duplication tower or multi-drive setup and needs reliable, stable output for multiple optical drives running at once. Newegg's a sensible spot to pick one up if you're already sourcing other PC components there. Buy Now at Newegg

Features

450W power output
110V and 220V dual voltage support
Switching power supply architecture
Compatible with SD-500U and SD-600U models
Model: SD-500U

Redundant Power Supply 650W 3U for $246

Sat, 12 Sep 2026 23:06:15 -0400

Anyone running a server setup where uptime matters will want this on hand, since the redundant design keeps things running even if one power module fails. Buy Now at Newegg

Features

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

HP 240W Power Supply for DC7900 SFF for $59.80

Sat, 12 Sep 2026 23:06:11 -0400

HP's 240W supply is a straightforward fit for anyone maintaining or repairing a DC7900 SFF desktop, giving you an exact-match replacement instead of hunting down a generic unit that might not seat or vent properly. Newegg carries it if your original supply has failed and you need the machine running again without a full rebuild. Buy Now at Newegg

Features

240W power capacity
Designed for HP dc7900 SFF
Model: 462435-001

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

Sat, 12 Sep 2026 23:05:57 -0400

Anyone running an older Dell OptiPlex GX620 or PowerEdge SC440 into the ground knows factory power supplies eventually give out, and this replacement gets that specific hardware back up without hunting down a discontinued part. Buy Now at Newegg

Features

400W power output
Compatible with Dell Optiplex GX620 Mini Tower
Compatible with PowerEdge SC440
Integrated cooling fan
Model: GX620-SC440-400W

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

Sat, 12 Sep 2026 23:05:35 -0400

Anyone building or replacing parts in a compact server setup will want the space savings of a 1U form factor without sacrificing reliable, consistent power delivery. Buy Now at Newegg

Features

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

Sparkle FSP300-601U Server Power Supply for $167.20

Sat, 12 Sep 2026 23:05:03 -0400

Anyone building or repairing a server rig will want this on their radar, since it's built specifically for that hardware rather than a repurposed desktop unit. Newegg carries it if you need a straightforward replacement without hunting down obscure specs elsewhere. Buy Now at Newegg

Features

300W power output
Dual fans for cooling
Wide input voltage range 90-264V
100,000 hours MTBF reliability
Model: FSP300-601U

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

Sat, 12 Sep 2026 23:05:00 -0400

For anyone building or repairing a 1U server setup, this 400W power supply gives you a compact, no-frills replacement that fits the tight space constraints without sacrificing reliable output. Buy Now at Newegg

Features

400W power output
1U server form factor
24+8+8 pin connectors
2 SATA, 3 Large D ports
Model: NPS-400CB B

Dell 580W Hot-Swap Server Power Supply for $122

Sat, 12 Sep 2026 23:04:07 -0400

Data center and server room techs will want this on hand, since hot-swap capability means you can replace a failed unit without powering down the whole system. Buy Now at Newegg

Features

580W power output capacity
Hot-swap functionality for continuous operation
Compatible with F5XMD, H371J, G686J, T410 systems
Model: AA25730L

700W ATX Mining Power Supply for $274.40

Sat, 12 Sep 2026 23:04:06 -0400

Running multiple GPUs for mining or a heavily loaded rig can trip up a standard power supply, so this 700W ATX unit suits anyone who needs stable output across several cards without overloading a single connector setup. Buy Now at Newegg

Features

700W ATX power supply
SATA support for storage
Optimized for cryptocurrency mining

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

Sat, 12 Sep 2026 23:03:49 -0400

For anyone running a Flex System chassis, this power supply is a straightforward way to keep your setup properly juiced without hunting down a discontinued OEM part, and Newegg makes it easy to add to your spare parts inventory. Buy Now at Newegg

Features

2500W power output
Model: 94Y8251

580W Power Supply Unit for $456.90

Fri, 11 Sep 2026 23:26:53 -0400

Anyone building a budget desktop or replacing an aging PSU will appreciate the 580W of headroom for a mid-range CPU and graphics card without paying for capacity you don't need. Buy Now at Newegg

Features

580W power capacity
Model: 7043627

HP Pavilion Slimline s5-1225la Desktop Replacement Power Supply for $60

Fri, 11 Sep 2026 23:20:04 -0400

Keeping an aging Pavilion Slimline running often comes down to a failing power supply, so this replacement suits anyone whose desktop won't boot or shuts off unexpectedly rather than justifying a whole new machine. Newegg carries it as a direct fit for the s5-1225la, taking the guesswork out of matching specs yourself. Buy Now at Newegg

Features

Compatible with HP Pavilion Slimline s5-1225la Desktop PC
Model: s5-1225la