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Computer Power Supplies

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Ultra Lifetime Series Pro 750W ATX12V & EPS12V Power Supply

LSP750 - 750W

The new Lifetime Series Pro 750W ATX12V & EPS12V Power Supply is the... more

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Ultra Lifetime Series Pro 550W ATX12V & EPS12V Power Supply

As low as $54.99

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Ultra Lifetime Series Pro 550W ATX12V & EPS12V Power Supply

LSP550 - 550W

The new Lifetime Series Pro 550W ATX12V & EPS12V Power Supply is the... more

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Ultra X4 U12-40505 ATX12V & EPS12V Power Supply

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As low as $125.99

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Ultra X4 U12-40505 ATX12V & EPS12V Power Supply

U1240505 - 600W

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As low as $80.00

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Antec 550 Watt ATX12V Power Supply

TRUE550 - 550W

These power supplies feature dedicated output circuitry for each voltage... more

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Strengths: Lots of power to spread around, very stable power levels, small

Weaknesses: none, and believe me, I TRIED to find one

Review: I'm running a system vith quite a few components reputed to be power hogs, and I'll admit that I was worried about the amount of power being used, even with a 550-watt supply. But no, no power shortages, no voltage instability, no problems whatsoever. I can't comment on noise, since I'm running five other 80mm fans, but it stays very cool without starting tornados in the room...

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Ultra V-Series 500W ATX12V Ver 2.03 AC Power Supply

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As low as $56.62

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Ultra V-Series 500W ATX12V Ver 2.03 AC Power Supply

ULT31841 - 500W

This new V series power supply offers more connectivity choices than the... more

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Great Deal for the Price

Strengths: Only $5 after mail-in-rebates at RadioShack

Weaknesses: Unknown brand

Review: For the price of only $5 after rebate, this is an awsome product. The product is easy to install, and I haven't had any problems with it. However, I am not familiar with the reliability of the Ultra brand, so I have have used this power supply in a cheap system. Power supplies are an integral component of any desktop system, so I didn't want to use an unknown brand in a high-tier system.

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Ultra X3 ULT40311 ATX12V & EPS12V Power Supply

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As low as $246.70

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Ultra X3 ULT40311 ATX12V & EPS12V Power Supply

ULT40311 - 1000W

Marketing description is not available. more

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Ultra Lifetime Series 500W ATX12V & EPS12V Power Supply

As low as $44.99

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Ultra Lifetime Series 500W ATX12V & EPS12V Power Supply

LS500 - 500W

All New Ultra Lifetime Series 500W ATX12V & EPS12V Power Supply offer a... more

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Ultra Lifetime Series Pro 450W ATX12V & EPS12V Power Supply

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As low as $50.22

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Ultra Lifetime Series Pro 450W ATX12V & EPS12V Power Supply

LSP450

Lifetime Series Pro 450W ATX12V & EPS12V Power Supply provides the... more

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As low as $28.00

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Dell Refurbished: 200-Watt PFC Power Supply for Dell OptiPlex GX1 Large Tower/ GX1 Low Profile Desktop/ GX1 Mid-Size Desktop/ GX1 Ultra Small Form Factor Desktops

824KH

A Power Supply is a direct replacement for the original part, which... more

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Dell Refurbished: 275-Watt PFC Power Supply for Dell Optiplex 755 Energy Smart Small Form Factor/ Optiplex 755 Energy Smart Ultra Small Form Factor

As low as $32.00

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Dell Refurbished: 275-Watt PFC Power Supply for Dell Optiplex 755 Energy Smart Small Form Factor/ Optiplex 755 Energy Smart Ultra Small Form Factor

KH620

A Power Supply is a direct replacement for the original part, which... more

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Ultra Lifetime Series Pro 650W ATX12V & EPS12V Power Supply

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As low as $76.68

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Ultra Lifetime Series Pro 650W ATX12V & EPS12V Power Supply

LSP650 - 650W

The new Lifetime Series Pro 650W ATX12V & EPS12V Power Supply is the... more

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Ultra X3 ULT40312 ATX12V & EPS12V Power Supply

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As low as $216.25

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Ultra X3 ULT40312 ATX12V & EPS12V Power Supply

ULT40312 - 850W

Ultra pulls out all of the stops for their latest power supply. By... more

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Ultra X3 600W EE ATX12V & EPS12V Power Supply

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As low as $90.00

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Ultra X3 600W EE ATX12V & EPS12V Power Supply

ULT40073 - 110 V AC, 220 V AC

The X3 600W EE ATX12V & EPS12V Power Supply is super efficient, using less... more

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Ultra X3 1600W Energy Efficient ATX12V & EPS12V Power Supply

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As low as $391.50

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Ultra X3 1600W Energy Efficient ATX12V & EPS12V Power Supply

ULT40070 - 1600W

The X3 1600W Energy Efficient ATX12V & EPS12V Power Supply is super... more

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Ultra Lifetime Series 350W ATX12V & EPS12V Power Supply

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As low as $33.99

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Ultra Lifetime Series 350W ATX12V & EPS12V Power Supply

LS350 - 350W

All New Ultra Lifetime Series 350W ATX12V & EPS12V Power Supply offer a... more

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Ultra U12-40874 ATX12V & EPS12V Power Supply

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As low as $259.00

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Ultra U12-40874 ATX12V & EPS12V Power Supply

U1240874 - 750 W - Internal - 110 V AC, 220 V AC

The Ultra U12-40874 LSX 750-Watt Power Supply is an advanced and... more

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Ultra V-Series 600W ATX & ATX12V Power Supply

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As low as $50.00

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Ultra V-Series 600W ATX & ATX12V Power Supply

ULT33133 - 600W

The V-Series 600W ATX & ATX12V Power Supply offers more connectivity... more

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Ultra U12-40746 Xfinity 8 Outlet 850VA 425W UPS

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As low as $76.35

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Ultra U12-40746 Xfinity 8 Outlet 850VA 425W UPS

U1240746

Keep your equipment running with the Ultra U12-40746 Xfinity 850VA 425W... more

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Ultra U12-40873 ATX12V & EPS12V Power Supply

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As low as $120.40

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Ultra U12-40873 ATX12V & EPS12V Power Supply

U1240873 - 650 W - Internal - 110 V AC, 220 V AC

The Ultra U12-40873 LSX 650-Watt Power Supply is an advanced and... more

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Ultra V-Series 350W ATX12V Ver 2.03 AC Power Supply

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As low as $43.99

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Ultra V-Series 350W ATX12V Ver 2.03 AC Power Supply

ULT31839 - 350W

This new V series power supply offers more connectivity choices than the... more

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Decent power supply

Strengths: Comes with all the standard connector for your motherboard.

Weaknesses: Might not have enough power for your power-hungry video card.

Review: This power supply comes with a 20/24 pin power connector as well as SATA and PCI express connectors. The fan noise seems to be low. While the 350w capacity seemed to be able to handle dual core CPUs, it fell a little short if you want to add a faster video card. I would not try to stress it by running a Geforce 8800 video along card with your system.

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Ultra X-Connect V-Series ATX 12V Power Supply

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As low as $100,000.00

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Ultra X-Connect V-Series ATX 12V Power Supply

ULT33134 - 400W

Never before has so many features been bundled together and offered at... more

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Great Quality Product

Strengths: Great quality product. The lifetime warranty can't be beat!

Weaknesses: Up to 78% efficiency. Higher efficiency models are out there from other companies.

Review: Bought it for $65 and it can't be beat. Don't waste your time with power supplies that die after a year. I will only buy Ultra power supplies.

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Computer Power Supplies

Top Manufacturers

Power Rating

Features

Power Supply Type

Browse by Store

Price Range

Search within results