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

650W Power Supply for $304.30

Sat, 05 Sep 2026 23:00:01 -0400

Anyone building or upgrading a mid-range desktop with a dedicated graphics card will want the headroom this offers, since 650W covers most single-GPU setups without maxing out. Newegg's price makes it a sensible pick if you'd rather not think about wattage again for years. Buy Now at Newegg

Features

650W total power output
Model: LSVW1DC650

300W HU300EGS-00 Power Supply Unit for $93

Sat, 05 Sep 2026 22:59:58 -0400

Anyone building a replacement or backup system will want to check that the wattage and connector layout match their existing setup before ordering, since this HU300EGS-00 unit is a specific OEM part rather than a universal fit. It's a practical option if you're repairing a prebuilt PC rather than assembling a custom rig from scratch. Buy Now at Newegg

Features

300W power capacity
6Pin, 4Pin, 6Pin power connectors
Compatible with V3667, 3668, 3669, 3660, 5050, 3050, 7050
Compatible with T3420
Model: HU300EGS-00

Liteon 500W Power Supply Unit for $121

Sat, 05 Sep 2026 22:59:11 -0400

Anyone building or upgrading a budget PC will want reliable, steady power without paying for wattage they don't need, and 500W covers most single-GPU setups without issue. Newegg's price on this Liteon unit makes it a sensible pick if you're trying to keep the power supply from eating into your build budget. Buy Now at Newegg

Features

500W power output
Model: PS-2551-5L

IEI 114W 20-Pin Switching Power Supply for $584

Sat, 05 Sep 2026 22:59:08 -0400

Anyone maintaining or repairing older industrial equipment or embedded systems will want this on hand, since matching the correct wattage and pin configuration matters more than finding a generic replacement. Newegg carries it if your setup calls for this exact 20-pin, 114W spec. Buy Now at Newegg

Features

114W power output capacity
IEI 20-pin connector compatibility
Switching power supply architecture
Model: ACE-115AP-RS

HP 1,200W Power Supply for DL385G7, 580, and 585G7 for $86

Sat, 05 Sep 2026 22:58:58 -0400

Server racks running an HP DL385G7, 580, or 585G7 need a matched replacement when the power supply fails, and this one is built specifically for those systems rather than a generic swap-in. Worth having on hand for IT teams managing older HP server fleets who want to avoid downtime from mismatched parts. Buy Now at Newegg

Features

1200W power capacity
Compatible with DL385G7 server
Model: 579229-001

Enhance ENP-7020B 200W 1U NAS Power Supply for $242

Sat, 05 Sep 2026 22:58:30 -0400

Anyone building or repairing a compact NAS setup will want a power supply matched to that specific form factor, and this 1U unit delivers 200W in a footprint designed to fit those tight enclosures without modification. Buy Now at Newegg

Features

200W power capacity
Small 1U form factor
Enhanced NAS power efficiency
Model: ENP-7020B

Dark Power Pro 650W Platinum Modular Power Supply for $165

Sat, 05 Sep 2026 22:58:12 -0400

Suits anyone building a high-performance rig where clean, efficient power delivery matters, since Platinum-rated efficiency means less wasted heat and lower electricity costs over the life of the build. The fully modular design also means you only plug in the cables your components actually need, keeping the inside of your case tidier. Buy Now at Newegg

Features

80 PLUS Platinum efficiency
Fully modular cable design
Silent 135mm Silent Wings fan
Overclocking key for single-rail mode
Model: DARK POWER PRO 650W

Dell OptiPlex 3020 7020 9020 SFF Power Supply for $70

Sat, 05 Sep 2026 22:58:04 -0400

Suits anyone patching up an aging Dell OptiPlex desktop, since power supplies for these small form factor models aren't the easiest to track down when the original fails. Buy Now at Newegg

Features

255W power output for OptiPlex systems
Reliable replacement for Dell NT1XP series
Small Form Factor specific design
Compatible with OptiPlex 3020, 7020, 9020
Model: NT1XP

Golden Field 500W Power Supply for $115

Fri, 04 Sep 2026 23:25:24 -0400

Golden Field's 500W supply suits budget builds and older office PCs that just need stable, basic power without any bells or whistles, not gaming rigs or systems with high-end graphics cards. Buy Now at Newegg

Features

500W rated power output
600W peak power capacity
Supports 1660 and 680GTX graphics cards
Golden Field brand reliability
Dorsal line cable configuration

Emacs 400W Switching Power Supply R2Z-6400P-R for $477

Fri, 04 Sep 2026 23:19:44 -0400

Anyone maintaining or replacing equipment that specs this exact power supply will want the R2Z-6400P-R on hand rather than hunting for a substitute, since switching supplies like this are often tied to specific industrial or server hardware requirements. Newegg carries it if your setup calls for this particular model. Buy Now at Newegg

Features

400W power output
Switching power supply efficiency
Model: R2Z-6400P-R

320W Desktop Power Supply for $70

Fri, 04 Sep 2026 23:19:08 -0400

Handy for older or budget desktop builds that don't need a lot of wattage, especially if you're replacing a failed PSU or putting together a basic office or home computer. Buy Now at Newegg

Features

320W total power output
Compatible with PS-4321-2HA, PS-4321-9HA units
Compatible with HP-D3201A0, CFH0320AWW models
Compatible with DPS-320NB power supply
Model: D10-320P2A

Lenovo M710s M910s V520 180W Switching Power Supply for $78

Fri, 04 Sep 2026 23:18:53 -0400

Older Lenovo desktop towers can be picky about replacement parts, so this M710s/M910s/V520-specific 180W supply is worth grabbing if your original unit died and you want a direct match rather than a generic substitute. Buy Now at Newegg

Features

180W power output
10-pin and 4-pin connectors
Compatible with M710s, M910s, V520
Model: HK280-72PP

1800W Modular ATX Gaming Power Supply for $175

Fri, 04 Sep 2026 23:18:48 -0400

Anyone running a power-hungry GPU and multiple drives will want the extra headroom here, and the modular cables mean you're only running what your build actually needs. Buy Now at Newegg

Features

1800W high-power output
ATX form factor compatibility
Modular design for cable management
Gaming-grade power delivery
Switching power supply architecture

Min-6251P 250W Server Power Supply for $124

Fri, 04 Sep 2026 23:17:44 -0400

Suits anyone building or repairing a server rack who needs a reliable, no-frills power supply rated for continuous workloads rather than typical desktop use. It's a straightforward replacement part if your current unit has failed or you're setting up additional server capacity. Buy Now at Newegg

Features

250W power output
Model: MIN-6251P

Dell 460W Power Supply Unit for $95

Fri, 04 Sep 2026 23:17:05 -0400

Dell's 460W PSU suits anyone replacing a failed power supply in a compatible Dell tower rather than piecing together a generic aftermarket unit, since it's built to the exact specs and connector layout your system expects. Buy Now at Newegg

Features

460W power output
6+4+4Pin power connector configuration
Model: L460EBM-00
Model: H460EBM-00
Model: HU460AM-01

G10 800W Power Supply Unit for $386

Fri, 04 Sep 2026 23:17:05 -0400

Gamers and PC builders assembling a mid-to-high-end rig will want the reliable, steady wattage this 800W PSU provides without paying for capacity you won't use. It's a sensible fit if you're running a single graphics card setup and want some headroom for future upgrades. Buy Now at Newegg

Features

800W power capacity
Model: 865412-101
Compatible with HSTNS-PD41-1
Compatible with DPS-800AB-34
High-efficiency power supply

R525 G2 750W Power Supply for $173

Fri, 04 Sep 2026 23:16:43 -0400

Anyone building or upgrading a mid-to-high-end PC will want a power supply with headroom to spare, and 750W gives you that buffer for a solid GPU and CPU pairing without maxing out your capacity. Buy Now at Newegg

Features

750W power output capacity
Model: SA5212L

DPS-400AB-17 B 400W 1U Desktop Power Supply for $268

Fri, 04 Sep 2026 23:16:15 -0400

Anyone building a compact 1U server setup will want the reliable, consistent power this supply provides without taking up unnecessary case space; it's a solid pick for tight rack configurations where every inch counts. Buy Now at Newegg

Features

400W power output
1U small form factor design
Desktop computer compatibility
Model: DPS-400AB-17 B

Dell 220W Power Supply for 3647 660S V270S D06S Chassis for $480

Fri, 04 Sep 2026 23:15:59 -0400

Anyone running a Dell 3647, 660S, V270S, or D06S chassis whose power supply has died will want an exact replacement rather than a generic swap, and this one's built to match those specific machines. Buy Now at Newegg

Features

220W power output
Model: L220AS-00
Model: PS-5221-09

800W Modular ATX Power Supply for $102.10

Fri, 04 Sep 2026 23:15:36 -0400

This 800W supply is worth a look if you're building a mid-to-high-end gaming rig, since the modular cables let you skip the clutter of unused wires inside your case. Newegg carries it at a price point that suits builders who want headroom for a future GPU upgrade without paying for capacity they don't yet need. Buy Now at Newegg

Features

800W continuous power output
1000W peak power capacity
Full modular cable design
24-pin ATX connector
Optimized for high-demand crypto mining systems