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Quick answer: For 4K gaming, our data ranks the CORSAIR RM1000x ATX 3.1 PCIe 5.1 Ready as the best power supply overall, with the CORSAIR HX1200i (2025) Fully Modular as the top value pick.
Choosing the best psus for 4k gaming 10 should start with the data. This guide compares five top power supplies for 2026 — ranked by specs, value, and where each one fits for 4K gaming.
Top 5 at a Glance
How We Built This Guide
We catalog every relevant product, cross-reference specs and real-world reviews, and rank by genuine value. No sponsorships, just data. Each pick above suits a clear use case for 4K gaming, from budget to flagship.
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
In our rankings, the Corsair power supply secures the chart-topper for 4K gaming. On paper its ATX 3.1, PCIe 5, Modular headline a competitive design. Measured against the field, it is a logical choice for 4K gaming.
- Pros: ATX 3.1 spec
Competitive on specs
Strong value in its class - Cons: Commands a flagship cost
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
In our rankings, the Asus Rog power supply secures the closest challenger for 4K gaming. The numbers that count — 1200W, Modular, 80 Plus Platinum — anchor a well-rounded profile. In like-for-like comparison, it stays easy to recommend.
- Pros: 1200W spec
Strong value in its class
Broad appeal - Cons: Not class-leading
Check current pricing
Prime 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
Weighing the whole field, the ASUS power supply ranks as a well-rounded mid-tier choice for 4K gaming. Figures like 1000W, 1000 W, ATX 3.0 put it ahead of similarly priced rivals. Measured against the field, it is a logical choice for 4K gaming.
- Pros: 1000W spec
Strong value in its class
Broad appeal - Cons: Not class-leading
Verify compatibility
Prime ASUS TUF Gaming 1000W Gold (1000 Watt, ATX 3.0 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
Weighing the whole field, the Be Quiet power supply ranks as a balanced all-rounder for 4K gaming. The numbers that count — 1000W, ATX 3.1, PCIe 5 — anchor a well-rounded profile. In like-for-like comparison, it stays easy to recommend.
- Pros: 1000W spec
Strong value in its class
Ranks well on the data - Cons: Not class-leading
Check current pricing
be quiet! Pure Power 13 M 1000W Power Supply, 80 Plus® Gold Certification, ATX 3.1 PSU, Support for PCIe 5.1 GPUs, semi-Passive 120mm be quiet! Fan, LLC Technology, Single Rail, for Overclocked GPUs
As an Amazon Associate we earn from qualifying purchases. Product prices and availability are accurate as of the date/time indicated.
5. CORSAIR HX1200i (2025) Fully Modular Ultra — Pick 5
Our data places the Corsair power supply firmly as the value champion for 4K gaming. The numbers that count — Modular, ATX 3.1, PCIe 5 — anchor a well-rounded profile. Measured against the field, it is a logical choice for 4K gaming.
- Pros: Modular spec
Competitive on specs
Strong value in its class - Cons: Not the fastest option
Basic styling
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.
Buying Guide: The Specs That Matter
Wattage Headroom
From a data standpoint, size the PSU above your peak draw — a 750-850W unit suits most single-GPU builds and leaves room for transient spikes and upgrades.
Efficiency and Certification
Looking at the numbers, 80 Plus Gold is the value pick for efficiency and lower heat; Platinum and Titanium add efficiency for always-on systems.
Modularity and ATX 3.0
On specs, fully modular units cut cable clutter, and ATX 3.0 with a native 12VHPWR connector simplifies powering modern GPUs.
Frequently Asked Questions
Which power supply ranks best in 2026?
Our rankings put the CORSAIR RM1000x ATX 3.1 PCIe 5.1 Ready Ful on top for overall specs and value. The full top five spans every budget, so match the pick to your needs.
How much should you spend on a power supply?
Entry options cost less while flagship power supplies command more. The best value usually sits in the mid-range for 4K gaming.
What specs should you compare for 4K gaming?
Size the PSU above your peak draw — a 750-850W unit suits most single-GPU builds and leaves room for transient spikes and upgrades.
Which pick offers the best value?
On the data, the CORSAIR HX1200i (2025) Fully Modular Ultra and ASUS TUF Gaming 1000W Gold (1000 Watt lead on value, while the CORSAIR RM1000x ATX 3.1 PCIe 5.1 Ready Ful is the no-compromise choice. Check live pricing above.
Our verdict: the CORSAIR RM1000x ATX 3.1 PCIe 5.1 Ready Ful is our top power supply pick for 4K gaming, with options above for every budget. Check live Amazon pricing before you buy.
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Top picks from this guide
be quiet! Pure Power 13 M 1000W Power Supply, 80…$140 \xc2\xb7 80/100CORSAIR RM1000x ATX 3.1 PCIe 5.1 Ready Fully Modular 1000W…$160 \xc2\xb7 80/100CORSAIR HX1200i (2025) Fully Modular Ultra-Low Noise ATX Power Supply…$300 \xc2\xb7 80/100ASUS TUF Gaming 1000W Gold (1000 Watt, ATX 3.0 Compatible…$170 \xc2\xb7 80/100
