Short answer: The Corsair HX1200i is my 1200W pick: very quiet in normal use, and in Tom’s Hardware’s test the fan stayed off until about 600W. There are 38 1200W units on my list: 33 in Tier A, 5 in Tier B.
Who 1200W suits
| Your graphics card | Is 1200W right? |
|---|---|
| RTX 5090 with a top processor | Yes |
| RTX 5090 overclocked | Yes |
| Workstations with heavy loads | Yes |
| RTX 5080 or smaller | More than you need |
Sizes from MSI, PC Gamer, Nvidia, AMD and Corsair recommendations for typical builds. Check your exact build in the wattage guide.
My 1200W picks
- My pick · Tier ACorsair HXi (2025)80 Plus Platinum · Fully modular · ATX · 1200/1500WThe Corsair HX1200i is my 1200W pick: very quiet in normal use, and in Tom’s Hardware’s test the fan stayed off until about 600W.Check 1200W price
- Near-silent · Tier Abe quiet! Dark Power 1480 Plus Titanium · Fully modular · ATX · 850/1000/1200WPC Games Hardware gave the 1200W model its Silent award.Check 1200W price
- Tier A alternative · Tier ANZXT C Series Gold (2024)80 Plus Gold · Fully modular · ATX · 850/1000/1200WGold and fully modular.Check 1200W price
- Value, Tier B · Tier Bbe quiet! Pure Power 13 M80 Plus Gold · Fully modular · ATX · 750/850/1000/1200WUp to 1200W at a lower price.Check 1200W price
- SFX-L · Tier AASUS ROG Loki Platinum80 Plus Platinum · Fully modular · SFX-L · 750/1200W1200W in a small SFX-L unit.Check 1200W price
- Platinum alternative · Tier ASeasonic Vertex Platinum (PX)80 Plus Platinum · Fully modular · ATX · 750/1200WTier A, at 750W and 1200W.Check 1200W price
How to choose between them
- Do you need it? Most RTX 5090 builds are fine on 1000W. 1200W is for top processors, overclocking or heavy work.
- Length. The HX-i is 200mm long. Check your case’s maximum.
- Noise. Big units often run quietly at gaming loads because they’re far from their limit.
Every 1200W power supply on my list
Every unit below is ATX 3.0 or newer and available on Amazon. The tier tells you what kind of build it suits, not a score. See the tiers explained.
Tier A: high-end builds (33)
| Power supply | Efficiency | Cables | Size | Price |
|---|---|---|---|---|
| Antec High Current Gamer (HCG) Pro Platinum | 80 Plus Platinum | Fully modular | ATX | 1200W on Amazon |
| ASRock Steel Legend Gold (SL-G) | 80 Plus Gold | Fully modular | ATX | 1200W on Amazon |
| ASRock Steel Legend Platinum (SL-P) | 80 Plus Platinum | Fully modular | ATX | 1200W on Amazon |
| ASUS ROG Loki Platinum | 80 Plus Platinum | Fully modular | SFX-L | 1200W on Amazon |
| ASUS ROG Strix Aura Gold | 80 Plus Gold | Fully modular | ATX | 1200W on Amazon |
| ASUS ROG THOR Platinum III | 80 Plus Platinum | Fully modular | ATX | 1200W on Amazon |
| be quiet! Dark Power 14 | 80 Plus Titanium | Fully modular | ATX | 1200W on Amazon |
| be quiet! Power Zone 2 EU Version | 80 Plus Platinum | Fully modular | ATX | 1200W on Amazon |
| be quiet! Pure Power 12 M | 80 Plus Gold | Fully modular | ATX | 1200W on Amazon |
| Corsair HXi (2025) | 80 Plus Platinum | Fully modular | ATX | 1200W on Amazon |
| Cougar Polar X2 (ATX 3.0) | 80 Plus Platinum | Fully modular | ATX | 1200W on Amazon |
| Enermax PlatiGemini | 80 Plus Platinum | Fully modular | ATX | 1200W on Amazon |
| Enermax Platimax D.F. II | 80 Plus Platinum | Fully modular | ATX | 1200W on Amazon |
| Enermax Revolution ATX 3.0 | 80 Plus Gold | Fully modular | ATX | 1200W on Amazon |
| FSP Hydro G Pro ATX 3.0 | 80 Plus Gold | Fully modular | ATX | 1200W on Amazon |
| FSP Hydro PTM Pro ATX 3.0 | 80 Plus Platinum | Fully modular | ATX | 1200W on Amazon |
| FSP Hydro PTM X Pro ATX 3.0 | 80 Plus Platinum | Fully modular | ATX | 1200W on Amazon |
| Lian Li Edge Gold | 80 Plus Gold | Fully modular | ATX | 1200W on Amazon |
| Lian Li RS-G | 80 Plus Gold | Fully modular | ATX | 1200W on Amazon |
| Lian Li SX-P | 80 Plus Platinum | Fully modular | ATX | 1200W on Amazon |
| Montech Century II Gold ATX 3.1 | 80 Plus Gold | Fully modular | ATX | 1200W on Amazon |
| Montech Titan Platinum (PLA) | 80 Plus Platinum | Fully modular | ATX | 1200W on Amazon |
| MSI MAG A-PLS PCIE5 | 80 Plus Platinum | Fully modular | ATX | 1200W on Amazon |
| NZXT C Series Gold ATX 3.0 (2023) | 80 Plus Gold | Fully modular | ATX | 1200W on Amazon |
| NZXT C Series Gold (2024) | 80 Plus Gold | Fully modular | ATX | 1200W on Amazon |
| PCCooler/ CPS YS | 80 Plus Gold | Fully modular | ATX | 1200W on Amazon |
| Raijintek Cratos | 80 Plus Gold | Fully modular | ATX | 1200W on Amazon |
| SAMA P | 80 Plus Platinum | Fully modular | ATX | 1200W on Amazon |
| Seasonic Vertex Gold (GX) | 80 Plus Gold | Fully modular | ATX | 1200W on Amazon |
| Seasonic Vertex Platinum (PX) | 80 Plus Platinum | Fully modular | ATX | 1200W on Amazon |
| SilverStone HELA R Platinum HAR-PM | 80 Plus Platinum | Fully modular | ATX | 1200W on Amazon |
| Super Flower Leadex VII Platinum Pro (XP) | 80 Plus Platinum | Fully modular | ATX | 1200W on Amazon |
| Super Flower Leadex VIII Platinum Pro | 80 Plus Platinum | Fully modular | ATX | 1200W on Amazon |
Tier B: most gaming PCs (5)
| Power supply | Efficiency | Cables | Size | Price |
|---|---|---|---|---|
| ASUS ROG Strix Platinum | 80 Plus Platinum | Fully modular | ATX | 1200W on Amazon |
| ASUS TUF Gold | 80 Plus Gold | Fully modular | ATX | 1200W on Amazon |
| be quiet! Pure Power 13 M | 80 Plus Gold | Fully modular | ATX | 1200W on Amazon |
| Corsair RM-e Gen 1 2023 (ATX 3.0) | 80 Plus Gold | Fully modular | ATX | 1200W on Amazon |
| Raijintek Ampere | 80 Plus Platinum | Fully modular | ATX | 1200W on Amazon |
Questions
Do I need 1200W for an RTX 5090?
Not for a typical build. 1000W is the usual recommendation. 1200W adds headroom.
Is a 1200W power supply loud?
Often not. At gaming loads it runs well below its limit, so the fan spins slowly or stays off.
Will a 1200W unit fit my case?
Many are longer than 850W units. Check your case’s maximum length.
Is 1200W a waste of electricity?
No. It only supplies what your parts draw.
Sources
- MSI: recommended PSU table for Nvidia 30/40/50 series
- PC Gamer: Nvidia GeForce RTX 5080 (RTX 50 series spec table)
- Tom's Hardware: Corsair HX1200i ATX 3.1 review
- PC Games Hardware: be quiet! Dark Power 14 test (German)
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