Power supply tier list and rankings
90 desktop power supplies · 1 workstation units · 71 with current offers in Canada · The snapshot is when this market was assembled. Each source and each offer keeps its own check time, shown in your time zone. An offer that stops appearing stays listed as last seen, outside current prices and Value.Sources refreshed · 1/1 within 24 h
This Power supply tier list ranks every model we can grade, scenario by scenario. A grade from S to F says how well the hardware handles the job, and # is its place among the models ranked for that scenario. Price is left out of every grade; Value and the current market sit on the right. Click a column to sort by it.
Filters
S ExceptionalA ExcellentB GoodC UsableD LimitedF Not suitable How grades are set →
90 models · 71 with current offers
How to read this list
- A grade is read from the model's own specifications against a fixed rubric for the scenario. Price, availability and the models around it play no part.
- # is the unit's place among the power supplies ranked for that scenario. Size comes first: an ATX unit does not fit an SFX case, so filter by size before comparing.
- Models without a current offer stay in the list: an older card is still a fair yardstick, and it is often what a used listing offers.
- Value and price come from today's offers in Canada. Sort by a scenario and Value follows that scenario's priorities.
What each scenario grades
Gaming
Enough output and a current ATX 3.x design for a mainstream gaming PC
High-end GPU
Output, a native 12V-2x6 cable and an ATX 3.x design for a 360–575 W graphics card
Small form factor
An SFX-size unit with enough output for a compact build
Workstation & 24/7
Efficiency, headroom and warranty for hours under load
From capability to a purchase
A grade answers "can it do the job". Whether today's price is good for what you get is a different question — the market answers it with Value under your own priorities.
Questions
What does a Power supply tier list show?
It ranks every Power supply model we can grade for each job, from S (exceptional) to F (not suitable), by reading its specifications against a fixed rubric. It shows how models compare in capability. It does not rank by price or name a best buy; for that, open the best list or the market page.
Does price affect a Power supply grade?
No. Grades come from specifications against a fixed rubric per scenario, so a model gets the same grade whatever it costs. Price enters only in the Value and Price columns.
What does the # next to a grade mean?
Its place among every model ranked for that scenario: by grade first, then by measured capability. Sorting by another column does not change it.
Why are workstation units ranked for workstation use only?
Units over 2000 W are built for multi-GPU workstations and need a 200–240 V circuit for their rating. They are ranked where they belong. Switch Segment to Workstation or All to see them.
Why are models that are not for sale included?
Capability does not depend on availability. Older models stay comparable for upgrades and used listings. Choose "With current offers" to keep only what is on the market in Canada today.