Best Power Supplies
The best PC power supplies for every build: reliable 850 W workhorses, budget Gold units, high-wattage PSUs for RTX 5090-class GPUs, premium Titanium picks, and compact SFX units.
7 picks · Published
Top picks at a glance
Corsair RM850x
Check pricefor Corsair RM850x (opens in a new tab)
be quiet! Pure Power 13 M 850W
Check pricefor be quiet! Pure Power 13 M 850W (opens in a new tab)
Corsair HX1200i
Check pricefor Corsair HX1200i (opens in a new tab)
Seasonic Focus GX-850
Check pricefor Seasonic Focus GX-850 (opens in a new tab)
Seasonic Prime TX-1300
Check pricefor Seasonic Prime TX-1300 (opens in a new tab)
Corsair RM750e
Check pricefor Corsair RM750e (opens in a new tab)
Corsair SF750
Check pricefor Corsair SF750 (opens in a new tab)Compare specs
| Product | #1Corsair RM850xBest overall | #2be quiet! Pure Power 13 M 850WBest for quiet builds | #3Corsair HX1200iBest for high-end GPUs | #4Seasonic Focus GX-850Best alternative | #5Seasonic Prime TX-1300Best premium | #6Corsair RM750eBest budget | #7Corsair SF750Best SFX |
|---|---|---|---|---|---|---|---|
| Our rating | |||||||
| Price | $$ | $$ | $$$$ | $$ | $$$$ | $ | $$$ |
| Wattage | 850 W | 850 W | 1200 W | 850 W | 1300 W | 750 W | 750 W |
| Efficiency | 80 Plus Gold | 80 Plus Gold | 80 Plus Platinum | 80 Plus Gold | 80 Plus Titanium | 80 Plus Gold | 80 Plus Platinum |
| ATX / GPU connector | ATX 3.1, native 12V-2x6 | ATX 3.1, native 12V-2x6 | ATX 3.x, native 12V-2x6 (check revision) | ATX 3.x, native 12V-2x6 (check revision) | ATX 3 (current units ship with 12V-2x6; check the listing’s revision) | ATX 3.x, native 12V-2x6 (check revision) | Check listing (buy the latest revision) |
| Modularity | Fully modular | Fully modular | Fully modular | Fully modular | Fully modular | Fully modular | Fully modular |
| Form factor | ATX | ATX | ATX | ATX | ATX (210 mm long) | ATX | SFX |
| Warranty | 10 years | 10 years | 10 years | 10 years | 12 years | 7 years | 7 years (check listing) |
| Buy | Check pricefor Corsair RM850x (opens in a new tab) | Check pricefor be quiet! Pure Power 13 M 850W (opens in a new tab) | Check pricefor Corsair HX1200i (opens in a new tab) | Check pricefor Seasonic Focus GX-850 (opens in a new tab) | Check pricefor Seasonic Prime TX-1300 (opens in a new tab) | Check pricefor Corsair RM750e (opens in a new tab) | Check pricefor Corsair SF750 (opens in a new tab) |
The picks, reviewed
CorsairCorsair RM850x
Quiet, reliable, fully modular, and backed by a 10-year warranty. It is the power supply we would put in almost any mid-to-high-end gaming build.
Pros
- Excellent reliability track record
- Very quiet, with the fan idle at low loads
- Native 12V-2x6 cable for modern GPUs
Cons
- Costs more than budget Gold units
- Wattage
- 850 W
- Efficiency
- 80 Plus Gold
- ATX / GPU connector
- ATX 3.1, native 12V-2x6
- Modularity
- Fully modular
be quiet!be quiet! Pure Power 13 M 850W
A silence-focused Gold unit and the successor to the Pure Power 12 M. Its fan switches off completely at low loads, and it has a native 12V-2x6 GPU cable and a 10-year warranty at a mid-range price.
Pros
- Semi-passive 120 mm fan: silent at idle, 17.6 dB(A) at full load
- Native 12V-2x6 GPU cable (up to 600 W)
- 10-year warranty
Cons
- Fewer premium features than the RM850x
- Wattage
- 850 W
- Efficiency
- 80 Plus Gold
- ATX / GPU connector
- ATX 3.1, native 12V-2x6
- Modularity
- Fully modular
CorsairCorsair HX1200i
Plenty of clean power for RTX 5090-class builds, with Platinum efficiency and digital monitoring through iCUE. It has headroom to spare.
Pros
- Easily powers the most demanding GPUs
- Platinum efficiency
- Real-time power monitoring in iCUE
Cons
- Expensive
- Overkill for mid-range builds
- Wattage
- 1200 W
- Efficiency
- 80 Plus Platinum
- ATX / GPU connector
- ATX 3.x, native 12V-2x6 (check revision)
- Modularity
- Fully modular
SeasonicSeasonic Focus GX-850
From one of the most respected PSU makers. It is a solid, quiet, fully modular 850 W unit that is often cheaper than the RM850x, with the same long warranty.
Pros
- Seasonic build quality
- Frequently discounted
- 10-year warranty
Cons
- Make sure you buy the ATX 3 revision (older versions exist)
- Wattage
- 850 W
- Efficiency
- 80 Plus Gold
- ATX / GPU connector
- ATX 3.x, native 12V-2x6 (check revision)
- Modularity
- Fully modular
SeasonicSeasonic Prime TX-1300
Titanium efficiency, top-tier components, and one of the longest warranties in the business. It is a PSU you can carry through several builds, with headroom for RTX 5090-class GPUs.
Pros
- Titanium efficiency (94% at 50% load) wastes the least power
- Exceptional build quality with Japanese 105 °C capacitors
- 12-year warranty
Cons
- Premium price
- Long 210 mm body needs room in the case
- Wattage
- 1300 W
- Efficiency
- 80 Plus Titanium
- ATX / GPU connector
- ATX 3 (current units ship with 12V-2x6; check the listing’s revision)
- Modularity
- Fully modular
CorsairCorsair RM750e
A reliable, fully modular Gold unit at a budget price, with plenty of power for mid-range GPUs like the RTX 5070 or RX 9060 XT.
Pros
- Fully modular at a budget price
- Native GPU connector
- Quiet under typical gaming loads
Cons
- Shorter warranty than the RMx series
- Not enough headroom for high-end GPUs
- Wattage
- 750 W
- Efficiency
- 80 Plus Gold
- ATX / GPU connector
- ATX 3.x, native 12V-2x6 (check revision)
- Modularity
- Fully modular
CorsairCorsair SF750
A compact SFX unit with Platinum efficiency and enough power for a high-end small form factor build. It is a favorite of the mini-ITX crowd.
Pros
- Tiny SFX size fits small form factor cases
- Platinum efficiency
- Quiet for its size
Cons
- Pricier than ATX units of the same wattage
- Short SFX cables can be tight in larger cases
- Wattage
- 750 W
- Efficiency
- 80 Plus Platinum
- ATX / GPU connector
- Check listing (buy the latest revision)
- Modularity
- Fully modular
How to choose a power supply
The PSU is the one part you should never cheap out on. A bad unit can be unstable, noisy, or, in the worst case, take other components with it. Buy from a reputable model line, and your PSU can outlast several builds.
How many watts do you need?
Size your PSU for your graphics card first. It’s by far the biggest power draw.
| Your GPU | Recommended PSU |
|---|---|
| Intel Arc B580, RX 9060 XT, RTX 5060 Ti | 550–650 W |
| RTX 5070 | 650–750 W |
| RX 9070 XT, RTX 5070 Ti | 750–850 W |
| RTX 5080 | 850 W |
| RTX 5090 | 1000 W or more |
These assume a typical gaming CPU. Add headroom for power-hungry CPUs, overclocking, or future upgrades. Always check your GPU maker’s official recommendation. A PSU running at 50–70% load is usually at its quietest and most efficient.
Efficiency ratings
80 Plus Gold is the sweet spot for most builds. Platinum and Titanium waste less power as heat, which means less noise and slightly lower bills, but they cost more up front. Efficiency is not the same as quality: a well-built Gold unit beats a poorly built Platinum one.
ATX 3.1 and the 12V-2x6 connector
Modern high-end NVIDIA GPUs use a 12V-2x6 (16-pin) power connector. For the cleanest, safest setup:
- Choose an ATX 3.x PSU with a native 12V-2x6 cable, rather than a bundle of adapters.
- Push the connector in until it’s fully seated, with no visible gap.
- Don’t bend the cable sharply right at the connector.
Modular, semi-modular, or non-modular?
Fully modular PSUs let you attach only the cables you need. That makes building easier and airflow better, and it’s worth the small premium. Semi-modular is a fine budget compromise.
⚠️ Never mix modular cables
Never reuse modular cables from a different PSU, even from the same brand. Pinouts on the PSU side are not standardized, and the wrong cable can instantly destroy your components. When you replace a PSU, replace its cables too.
Warranty is a quality signal
Manufacturers put long warranties (10–12 years) on units they trust. A short warranty on a cheap PSU tells you something. Community-maintained PSU tier lists are also a great way to check a specific model’s quality before buying.
FAQ
Can a PSU be too powerful? No. Your PC draws only what it needs. An oversized PSU just costs more and may run slightly less efficiently at very low loads.
How long does a power supply last? A quality unit typically lasts as long as its warranty, and often longer. If you’re reusing an old PSU in a new build, make sure it has the right connectors and is still within a reasonable age.
What’s the difference between ATX and SFX? SFX units are much smaller, for small form factor cases. Many ATX cases accept SFX PSUs with an adapter bracket, but SFX units cost more per watt.