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- Top 5 at a Glance
- Builder’s Checklist
- Quick Comparison Table
- 1. CORSAIR RM1000x ATX 3.1 PCIe 5.1 Ready Ful — Pick 1
- 2. ASUS ROG Strix 1200W Platinum (Fully Modul — Pick 2
- 3. ASUS TUF Gaming 1000W Gold (1000 Watt — Pick 3
- 4. be quiet! Pure Power 13 M 1000W Power Supp — Pick 4
- 5. CORSAIR HX1200i (2026) Fully Modular Ultra — Pick 5
- Builder’s Buying Guide: Fitting It Into Your Rig
- Related Guides
- Related Articles
- Frequently Asked Questions
- Related Articles
Quick answer: For a 2026 build, the CORSAIR RM1000x ATX 3.1 PCIe 5.1 Ready is the power supply we would build around, while the CORSAIR HX1200i (2025) Fully Modular is the budget-friendly choice.
Choosing the best psus for 4k gaming 10 for a 2026 build comes down to picking parts that play nice together. Below we run through five power supplies, judging each on compatibility, real-world fit, and the value it brings to 4K gaming.
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Builder’s Checklist
Everything here is graded the way a builder actually thinks: does it fit, does it work with your other parts, and where it sits in a balanced 2026 build. Each option above suits a different build and budget for 4K gaming.
Quick Comparison Table
| Pick | Power Supply | Best For | Price |
|---|---|---|---|
| 1 | CORSAIR RM1000x ATX 3.1 PCIe 5.1 Ready Ful | Pick 1 | $159.99 |
| 2 | ASUS ROG Strix 1200W Platinum (Fully Modul | Pick 2 | $255.0 |
| 3 | ASUS TUF Gaming 1000W Gold (1000 Watt | Pick 3 | $169.99 |
| 4 | be quiet! Pure Power 13 M 1000W Power Supp | Pick 4 | $139.9 |
| 5 | CORSAIR HX1200i (2025) Fully Modular Ultra | Pick 5 | $299.99 |
1. CORSAIR RM1000x ATX 3.1 PCIe 5.1 Ready Ful — Pick 1
Looking at it from the bench, the Corsair power supply is the centerpiece of the build for 4K gaming. With ATX 3.1, PCIe 5, Modular, it mates cleanly with the rest of your parts. If you want parts that just go together, add it to the list.
- Pros: ATX 3.1 spec
Great compatibility
Builder-friendly - Cons: Premium price
May exceed modest budgets
CORSAIR RM1000x ATX 3.1 PCIe 5.1 Ready Fully Modular 1000W Power Supply – Low-Noise, Cybenetics Gold Efficiency, Native 12V-2x6 Connector – Black
As an Amazon Associate we earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated.
2. ASUS ROG Strix 1200W Platinum (Fully Modul — Pick 2
If you’re putting a rig together, the Asus Rog power supply is a step-up option for 4K gaming. The 1200W, Modular, 80 Plus Platinum keep compatibility and setup painless. For a hassle-free build aimed at 4K gaming, it is a safe bet.
- Pros: 1200W spec
Great compatibility
Pairs well with common parts - Cons: Not class-leading
Verify compatibility
ASUS ROG Strix 1200W Platinum (Fully Modular Power Supply, 80 Plus Platinum Certified, ATX 3.1, GaN MOSFET, GPU-First Intelligent Voltage Stabilizer, 10-Year Warranty)
As an Amazon Associate we earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated.
3. ASUS TUF Gaming 1000W Gold (1000 Watt — Pick 3
If you’re putting a rig together, the ASUS power supply is a dependable middle-of-the-road pick for 4K gaming. The 1000W, 1000 W, ATX 3.0 keep compatibility and setup painless. If you want parts that just go together, add it to the list.
- Pros: 1000W spec
Builder-friendly
Easy to fit in a build - Cons: Not class-leading
Check current pricing
ASUS TUF Gaming 1000W Gold (1000 Watt, ATX 3.1 Compatible Fully Modular Power Supply, 80+ Gold Certified, Military-Grade Components, Dual Ball Bearing, Axial-tech Fan, PCB Coating, 10 Year Warranty)
As an Amazon Associate we earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated.
4. be quiet! Pure Power 13 M 1000W Power Supp — Pick 4
If you’re putting a rig together, the Be Quiet power supply is a reliable all-rounder for 4K gaming. The 1000W, ATX 3.1, PCIe 5 keep compatibility and setup painless. For a hassle-free build aimed at 4K gaming, it is a safe bet.
- Pros: 1000W spec
Great compatibility
Pairs well with common parts - Cons: Not class-leading
Check current pricing
be quiet! Pure Power 13 M 1000W, ATX 3.1, Fully Modular PSU, 80+ Gold
As an Amazon Associate we earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated.
5. CORSAIR HX1200i (2026) Fully Modular Ultra — Pick 5
Fitting into a 2026 build, the Corsair power supply is the smart budget pick for tighter builds aimed at 4K gaming. The Modular, ATX 3.1, PCIe 5 keep compatibility and setup painless. For a hassle-free build aimed at 4K gaming, it is a safe bet.
- Pros: Modular spec
Great compatibility
Easy to fit in a build - Cons: Not the fastest option
Check long-term needs
CORSAIR HX1200i (2025) Fully Modular Ultra-Low Noise ATX Power Supply with 12V-2x6 Cable – ATX 3.1 & PCIe 5.1 Compliant, Cybenetics Platinum Efficiency, Fluid Dynamic Bearing Fan – Black
As an Amazon Associate we earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated.
Builder’s Buying Guide: Fitting It Into Your Rig
Check Compatibility First
Before pulling the trigger, double-check the power supply suits your platform and the rest of your 2026 build — sockets, sizes, connectors, and clearances all have to line up.
Match It to Your Budget
Work out how big a slice of your build budget this deserves based on how hard 4K gaming leans on the power supply, then settle on the tier that weighs cost against headroom.
Plan for Upgrades
A sensible power supply pick leaves headroom to grow, so go with one that won’t choke a later upgrade and keeps your build useful for years.
Related Guides
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Want more on this subject? Have a look at the hand-picked guides below — each one runs through the same scoring rubric used in this review.
Frequently Asked Questions
Does 4K gaming actually need more power than 1440p?
Yes, from the GPU side. At 4K the graphics card sits at or near its power limit almost constantly rather than dipping between frames, so sustained draw is higher and the CPU matters less. Size the supply for continuous GPU board power rather than the lower averages you see at lower resolutions.
What wattage suits a 4K gaming build?
A 300 to 350W class card with a modern eight core CPU is well covered by 850W. Step to 1000W for a 400 to 450W card and 1200W or more for a 600W flagship. Aim for your sustained load to sit near 55 to 65 percent of the rating.
Do high refresh 4K monitors change the requirement?
Monitors draw from the wall, not the PSU, so the display itself is irrelevant. What does change is that chasing 120 or 144 frames per second at 4K keeps both CPU and GPU busier simultaneously, raising combined sustained draw compared to a 60Hz target. Allow an extra 50 to 100W for that.
Is ATX 3.1 necessary?
It is strongly preferable. The specification requires the unit to ride out short excursions well above rated output, which is exactly what a 4K-loaded GPU produces during clock transitions. Older units with tightly tuned over power protection can shut down even though average load is comfortably within their rating.
Should I use the native 12V-2×6 cable?
Yes, whenever the card supports it. A single native lead avoids the added contact resistance of a multi-plug adapter, removes a failure point and keeps the sideband sensing pins working. Push it in until it clicks and avoid bending the cable sharply within about 35mm of the connector body.
Top picks from this guide
CorsairCORSAIR RM1000x ATX 3.1 PCIe 5.1 Ready Fully Modular 1000W…$119 \xc2\xb7 98/100CorsairCORSAIR HX1200i (2025) Fully Modular Ultra-Low Noise ATX Power Supply…$300 \xc2\xb7 97/100ASUSASUS TUF Gaming 1000W Gold (1000 Watt, ATX 3.1 Compatible…$160 \xc2\xb7 95/100ASUSASUS ROG Strix 1200W Platinum (Fully Modular Power Supply, 80…$255 \xc2\xb7 95/100
