Rosewill Power Supplies under $75

5 Rosewill power supplies under $75. Most cost $36 to $74, and half cost less than $50.

Rosewill

550 Watts, Non-modular

+550W output for mid-range builds

+Active PFC design for power factor correction

+Low-noise design for quieter operation

−Non-modular design means all cables are fixed

$35.98-22%List: ~~$45.99~~

as of 11/04/2026 07:06 PST - Details

Rosewill

650 Watts, Gold, ATX, Non-modular

+650W output for mid-range builds

+ATX 3.1 compatible for current PC standards

+Includes a 16-pin PCIe 5.1 GPU connector

−Non-modular design means all cables are fixed

$47.97-20%List: ~~$59.99~~

as of 11/04/2026 07:06 PST - Details

RosewillSpec score 9.5

850 Watts, Gold, ATX, Fully modular

+850 watts: the most watts of the 5 here

+Fully modular: only 2 of 5 here have one

$74.95-17%List: ~~$89.99~~

as of 11/04/2026 07:06 PST - Details

Rosewill

650 Watts, Bronze, ATX, Semi-modular

+650 watts: only 1 of 5 here have more watts

$49.96-17%List: ~~$59.99~~

as of 11/04/2026 07:06 PST - Details

RosewillSpec score 9.0

500 Watts, Fully modular

+500W output for Mini ITX and Flex ATX builds

+Fully modular design reduces cable clutter

+1U form factor for compact systems

$49.99

as of 11/04/2026 07:06 PST - Details

Compare specs

Watts	Efficiency	Form	Modular	ATX version	Spec score	Price
550			Non-modular		n/a	$35.98 as of 11/04/2026 07:06 PST - Details
650	Gold	ATX	Non-modular	ATX 3.1	n/a	$47.97 as of 11/04/2026 07:06 PST - Details
850	Gold	ATX	Fully modular	ATX 3.1	9.5	$74.95 as of 11/04/2026 07:06 PST - Details
650	Bronze	ATX	Semi-modular	ATX 3.1	n/a	$49.96 as of 11/04/2026 07:06 PST - Details
500			Fully modular		9.0	$49.99 as of 11/04/2026 07:06 PST - Details

Spec scores, pros and cons, and prices are explained in the How it works section of the About page.