If you’re planning to build a next-gen gaming rig around the beastly NVIDIA RTX 5090, you’re going to need more than just raw GPU power—you’ll need a power supply that can keep up with the demands of PCIe 5.1, ATX 3.1, and dual 12V-2×6 connectors. The RTX 5090 is no slouch, and it demands clean, efficient, and stable power delivery. Below, we’ve rounded up the absolute best power supplies in 2025 that will power your 5090 build like a champ, whether you’re chasing ultra settings, max frame rates, or both.
Best PSU for RTX 5090: Quick Comparison
| Model | Wattage | Efficiency | Price (Amazon) |
| Corsair HX1500i (2025) | 1500W | Platinum (Cybenetics) | $384 – Buy Now |
| Seasonic PRIME PX-1600 | 1600W | 80+ Platinum | $476 – Buy Now |
| MSI MAG 1250GL | 1250W | 80+ Gold | $214 – Buy Now |
| NZXT C1500 Platinum | 1500W | 80+ Platinum | Check Availability |
| Seasonic Prime TX-1600 Noctua Edition | 1600W | 80+ Titanium | $654 – Buy Now |
| be quiet! Straight Power 12 1500W | 1500W | 80+ Platinum | $244 – Buy Now |
| Corsair RM1200x Shift | 1200W | 80+ Gold | $254 – Buy Now |
| be quiet! Dark Power Pro 13 1600W | 1600W | 80+ Titanium | $480 – Buy Now |
Best PSU for RTX 5090: Top Picks
Corsair HX1500i
Quick Highlights
- 1500W
- ATX 3.1 & PCIe 5.1 Ready
- Includes 12V-2×6 Cable
- Cybenetics Platinum Certified
- Fully Modular & Ultra-Low Noise
- Price – $384 – Buy Now
Corsair’s HX1500i 2025 refresh is a flagship power supply built for heavy-duty setups. It delivers clean and stable power with Cybenetics Platinum efficiency, and more importantly, it’s fully updated for next-gen GPUs like the RTX 5090. With a 12V-2×6 cable included, this unit is ready to support the 5090’s PCIe 5.1 requirements without adapters. It also uses fluid dynamic bearing fans that barely spin under light loads, keeping things whisper-quiet.
Corsair’s iCUE integration adds real-time telemetry for power draw, temperature, and fan speed—ideal for system builders who want full control. The modular design makes cable management a breeze, and Corsair’s signature build quality is backed by a 10-year warranty. If you want a PSU that runs cool, quiet, and clean while powering tomorrow’s GPUs, this one checks every box.
Pros
- Fully future-proof with PCIe 5.1 and 12V-2×6 support
- Excellent thermal performance with near-silent operation
Cons
- Slightly longer than average; check case clearance
Seasonic PRIME PX-1600
Quick Highlights
- 1600W
- 80+ Platinum Efficiency
- PCIe 5.1 Ready with 12VHPWR
- ATX 3.0 Compliant
- 12-Year Warranty
- Price – $476 – Buy Now
The PRIME PX-1600 is a beast built by one of the most trusted names in power delivery—Seasonic. It delivers a whopping 1600W, which is more than enough for the RTX 5090 plus an overclocked CPU, storage, and multiple fans. It’s fully modular, features top-tier Japanese capacitors, and is designed for exceptional reliability even under full load. With its Platinum rating, it stays efficient and cool even when pushed to the limit.
While it still uses the standard 12VHPWR instead of the 12V-2×6, it meets PCIe 5.1 standards and will work well with adapter-free RTX 5090 cables when included. The fan profile is tuned for low-noise operation, and the 12-year warranty speaks volumes about Seasonic’s confidence in their build. For builders looking for raw, proven performance with long-term stability, this PSU is a no-brainer.
Pros
- Massive 1600W headroom for high-end builds
- Exceptional component quality and efficiency
Cons
- No native 12V-2×6 cable (though it’s PCIe 5.1 compatible)
MSI MAG 1250GL
Quick Highlights
- 1250W
- 80+ Gold Certified
- ATX 3.1 & PCIe 5.1 Ready
- Includes 12V-2×6 Cable
- Compact Form Factor
- Price – $214 – Buy Now
The MSI MAG 1250GL is an excellent choice for gamers who want a reliable PSU with all the modern standards without going all the way to 1500W or beyond. This unit is fully compliant with ATX 3.1 and PCIe 5.1 and comes with a native 12V-2×6 cable—no adapters needed. It’s compact for its class, which makes it a great fit in mid-size cases without sacrificing features.
MSI didn’t cut corners on build quality either. You get full modularity, 100% Japanese capacitors, and a very quiet 135mm FDB fan that only spins when it needs to. The 80+ Gold rating is still plenty efficient for most gaming and creative workloads, and with a 10-year warranty, it’s built for the long haul.
Pros
- Modern cable standards with compact build
- Great value without compromising essential features
Cons
- Gold efficiency is solid, but not class-leading
NZXT C1500 Platinum
Quick Highlights
- 1500W
- Dual 12V-2×6 Connectors
- ATX 3.1 Compliant
- Zero Fan Mode
- 100% Japanese Capacitors
- Price – Check Availability
NZXT’s C1500 Platinum is one of the few PSUs offering dual 12V-2×6 connectors, making it an ideal pick for builders running dual GPUs or just wanting full next-gen cable compliance. It delivers clean 1500W power with an 80+ Platinum rating and features Zero Fan Mode for silent operation under low to moderate loads.
Build quality is solid across the board—internals are made with high-end Japanese capacitors, and the modular layout is clean and easy to manage. This is a PSU designed for high-end gamers and content creators alike who value silence, power, and future-proofing in one neat black box.
Pros
- Dual 12V-2×6 cables make it ultra-future-proof
- Silent operation with Zero Fan Mode
Cons
- Pricier than other Platinum PSUs
Seasonic Prime TX-1600 Noctua Edition
Quick Highlights
- 1600W
- 80+ Titanium Efficiency
- ATX 3.1 Compliant
- Noctua-tuned 135mm Fan
- Ultra-Quiet Profile
- Price – $654 – Buy Now
This is the PSU you buy when silence is just as important as power. The Seasonic Prime TX-1600 Noctua Edition combines one of the best electrical designs in the business with a fan tuned by Noctua—known for near-silent operation. It delivers Titanium-rated efficiency and a consistent 1600W output, which makes it more than capable of feeding the RTX 5090 and then some.
What stands out here is the ultra-low acoustic footprint, even at high loads. Combined with ATX 3.1 support and modular cabling, this PSU is ideal for enthusiasts who demand power without the noise. Its signature brown-and-black theme won’t be for everyone, but its performance is undeniable.
Pros
- Noctua cooling delivers whisper-quiet performance
- Titanium efficiency rating for elite power savings
Cons
- Expensive and visually polarizing (brown accents)
be quiet! Straight Power 12 1500W
Quick Highlights
- 1500W
- 80+ Platinum Certified
- ATX 3.1 Compliant
- Supports 12VHPWR & 6+2 Pin GPUs
- Silent 135mm Fan
- Price – $244 – Buy Now
The be quiet! Straight Power 12 delivers premium efficiency and silence, living up to the brand’s name. It’s fully ATX 3.1 compliant, features Platinum efficiency, and includes both 12VHPWR and 6+2 connectors for maximum compatibility. Whether you’re running the latest RTX 5090 or still bridging from an older GPU, this PSU is flexible enough to handle either with ease.
The standout here is its quiet operation—even under moderate to heavy load, the 135mm Silent Wings fan keeps noise to a minimum. Build quality is excellent, and the modular design makes routing cables simple. If you value silence and reliability as much as raw power, this is one of the most well-balanced PSUs available.
Pros
- Exceptionally quiet even at high load
- Versatile with modern and legacy GPU support
Cons
- No native 12V-2×6 (uses 12VHPWR instead)
Corsair RM1200x Shift
Quick Highlights
- 1200W
- 80+ Gold Efficiency
- Side-Facing Modular Connectors
- ATX 3.1 & PCIe 5.1 Compliant
- Includes 12V-2×6 Cable
- Price – $254 – Buy Now
The Corsair RM1200x Shift is all about accessibility and forward compatibility. Its standout feature is the side-mounted modular interface, which makes cable management a dream – especially in tight mid-tower or dual-chamber cases. It delivers 1200W of power at 80+ Gold efficiency and is fully ATX 3.1 and PCIe 5.1 compliant, including a native 12V-2×6 cable for the RTX 5090.
While it doesn’t reach Titanium or Platinum levels of efficiency, it still offers rock-solid performance at a more affordable price point. The fan stays quiet most of the time, and Zero RPM mode means it won’t spin at all during idle or light workloads. It’s a smart choice for RTX 5090 users who want a premium PSU that doesn’t cost a fortune.
Pros
- Side-facing connectors are perfect for modern cases
- Includes native 12V-2×6 and Zero RPM mode
Cons
- 1200W may be borderline for future upgrades
be quiet! Dark Power Pro 13 1600W
Quick Highlights
- 1600W
- 80+ Titanium Certified
- ATX 3.1 Compliant
- Dual 12VHPWR Cables
- Digital Voltage Regulation
- Price – $480 – Buy Now
The Dark Power Pro 13 is be quiet!’s flagship PSU, and it lives up to that title. Delivering Titanium-grade efficiency and a full 1600W of clean power, it’s built for systems with high-end GPUs, beefy CPUs, and tons of peripherals. It supports ATX 3.1, offers dual 12VHPWR cables, and features digital voltage regulation for ultra-precise output—critical for stable overclocking and high-end GPU stability.
Its cooling system is also premium—built around a silent 135mm fan that operates almost inaudibly thanks to a mesh front panel and internal airflow tuning. You also get the Overclocking Key, which allows you to toggle between multi-rail and single-rail modes. It’s pricey, but it’s arguably the best all-in-one PSU for high-performance systems in 2025.
Pros
- Dual 12VHPWR cables and elite-level electrical performance
- Adjustable single/multi-rail overclocking switch
Cons
- Very expensive
Conclusion
The RTX 5090 is a serious GPU—it needs serious power. For most builds, the Corsair HX1500i is the best all-rounder with top-tier efficiency and full next-gen support. Want silence? Go with the Seasonic TX-1600 Noctua Edition. Tight on space or budget? The MSI MAG 1250GL and Corsair RM1200x Shift have you covered.
Just make sure your PSU is ATX 3.1, PCIe 5.1 compliant, and includes a 12V-2×6 or 12VHPWR cable. The 5090 demands it—don’t cheap out.
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