CORSAIR HX Series, HX1000, 1000 Watt, Fully Modular Power Supply, 80+ Platinum Certified (CP-9020139-NA)
Bottom line: The CORSAIR HX Series ($335.00 on Amazon as of 2026-10-21 04:20 UTC): 80 PLUS Platinum efficiency cuts wall draw and waste heat versus Gold units; main trade-off: 1000W is more headroom than a single-GPU mid-range build will ever use.
As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →
*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
Pros & Cons
Pros
- ✓ 80 PLUS Platinum efficiency cuts wall draw and waste heat versus Gold units
- ✓ Fully modular cabling: attach only what the build needs for cleaner airflow
- ✓ 10-year CORSAIR warranty, among the longest offered on an ATX PSU
- ✓ 135mm FDB fan with Zero RPM mode stays fully stopped at low loads
- ✓ All-Japanese capacitors plus a switchable single or multi +12V rail
Cons
- ✗ 1000W is more headroom than a single-GPU mid-range build will ever use
- ✗ Multi-rail mode can trip OCP on high-draw GPUs unless switched to single rail
- ✗ Modular connectors add depth, tight in small ATX and SFF-adjacent cases
- ✗ Cable set is proprietary; reusing cables from another PSU risks damage
Manufacturer description
The CORSAIR HX1000 is a 1000-watt, fully modular ATX power supply built for high-performance rigs where clean power delivery matters more than shaving a few dollars off the build. Its 80 PLUS Platinum certification means less of your wall power is lost as heat, and the all-Japanese capacitor set is the reason CORSAIR backs this unit with a 10-year warranty. The 135mm fluid-dynamic-bearing fan stays completely stopped in Zero RPM mode at low and medium loads, so the HX1000 contributes nothing to your case noise until you actually push it. Because every cable is detachable, you route only what…
SpecPicks Verdict
SpecPicks scored CORSAIR HX Series using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies category. Compare with similarly-priced alternatives in the power supplies category before committing. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for power supplies of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Is the CORSAIR HX1000 fully modular?
Yes. Every cable detaches, including the 24-pin, so you install only the connectors your build uses. That reduces clutter behind the motherboard tray and improves case airflow.
How long is the warranty on the HX1000?
CORSAIR covers the HX1000 with a 10-year warranty backed by its technical support line at 1-888-222-4346, option 1. Confirm current terms on the product listing before buying.
Does the fan run all the time?
No. The 135mm fluid-dynamic-bearing fan has a Zero RPM mode that keeps it stopped at low loads, so the unit is effectively silent until the load rises enough to spin it up.
What does 80 PLUS Platinum mean for my power bill?
Platinum is the second-highest 80 PLUS tier, so more of the wall power reaches your components instead of becoming heat. Lower waste heat also means less work for your case fans.
Will the HX1000 work with my older motherboard?
It meets ATX12V v2.4 and EPS 2.92 and is backward compatible with ATX12V 2.2, 2.31, and 2.01 systems, so older ATX boards are supported. Check your case for ATX PSU clearance.
Key Features
- 80 Plus Platinum: Runs cooler and uses less power than less efficient power supplies
- Fully Modular: Allows user to only use the cables they need for a cleaner looking build with better airflow
- 10-year warranty: Backed by Corsair's legendary technical support
- 135mm FDB fan with Zero RPM mode: Virtually silent operation at low loads, plus 12V Rail Switch: Gives the user the choice of a single plus 12V rail or multiple plus 12V rails
- ATX12V v2.4 and EPS 2.92 standards and is backward compatible with ATX12V 2.2, 2.31 and ATX12V 2.01 systems
Full Specifications
| Brand | Corsair |
|---|---|
| Wattage | 1000 watts |
| Fan Size | 13.5 centimeters |
| Model Name | HX Series |
| Unit Count | 1 Count |
| Form Factor | ATX12V |
| Model Number | CP-9020139-NA |
| Compatibility | Switch |
| Fully Modular | Allows user to only use the cables they need for a cleaner looking build with better airflow |
| Built-In Media | PSU (1) |
| Connector Type | EPS |
| Cooling Method | Air |
| Item Type Name | Computer Power Supply |
| Number of Fans | 1 |
| Output Wattage | 1000 watts |
| Item Dimensions | 5.9 x 7.1 x 3.39 inches |
| Mfr Part Number | CP-9020139-NA |
| Number of Items | 1 |
| Number of Packs | 1 |
| 10-year warranty | Backed by Corsair's legendary technical support |
Ready to buy?
CORSAIR HX Series, HX1000, 1000 Watt, Fully Modular Power Supply, 80+ Platinum Certified (CP-9020139-NA) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
Related Power Supplies
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- How to Build a Windows 98 Retro PC in 2026
- Best 1440p Gaming GPUs in 2026
- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- Best Retro Handhelds in 2026 — From $35 to $500
More reviews from the SpecPicks archive
Browse all reviews →- Ex-Sega Engineer Builds a 'Super-Realistic' CRT Emulator
- Wooden CPU Cooler: How to Build One and What to Expect
- Best Gaming Headsets and Audio Gear for Console Players in 2026
- Raspberry Pi 4 8GB Cyberdeck Build: A Practical 2026 Parts Guide
- Jellyfin on a Ryzen 5 5600G: 4K Transcoding on a $400 Mini-Server (2026)
- Does Ryzen 3D V-Cache Speed Up CPU-Only LLM Inference?
- Ryzen 7 5800X3D vs Core i7-14700K: The DDR4 Gaming Faceoff for 2026 Builders
- llama.cpp on a 12GB RTX 3060: llama-bench Setup and Measured tok/s
- Best CPU Cooler for 2026: 5 Picks for Air, AIO, and Silent Builds
- Build a Wall-Mounted Raspberry Pi 4 Arcade Cabinet: 3D-Printed Case, SSD Boot, Real BOM
- 3dfx Voodoo 5 5500 Install Troubleshooting on Windows 98 SE: Drivers, IRQs, and Glide Wrapper Fixes
- 8BitDo Pro 2 vs GameSir G7 SE for Raspberry Pi Emulation
- Network-Wide Ad Blocking with Pi-hole on a Raspberry Pi 4 8GB (2026 Setup)
- Qwen 3.6 27B on 24GB VRAM: Backend, Quant + Settings Synthesis
- Best 4K Monitor for PS5 and PC Under $500: KOORUI QD-Mini LED vs Samsung Odyssey
- How to run Qwen 3 32B on AMD Radeon RX 7900 XTX
- CompactFlash as Your IDE Hard Drive: A Silent, Reliable Retro PC Boot Disk
- Headset Mic vs USB Mic for Discord and Twitch: Recon 50 vs Blue Yeti
- Best Controller for Fighting Games on PC in 2026
- Why Local RAG Beats Cloud Agents at Follow-Up Questions on an RTX 3060
- Anthropic's Samsung Chip Talks: Why Local Inference on an RTX 3060 Still Matters
- How Creative's Sound Blaster Ruled PC Audio for 20 Years
- Ryzen 7 5800X vs 5700X for a Dual-Duty Gaming and Local-LLM Build
- LEGO Batman: Legacy of the Dark Knight Steam Deck FPS
Earliest SpecPicks reviews
Browse full archive →- Best GPU for Llama 3.1 8B (2026)
- Best GPU for Qwen 3 14B (2026)
- Best GPU for Qwen 3 32B (2026)
- Best GPU for Llama 3.1 70B (2026)
- Best GPU for DeepSeek-R1 32B (2026)
- Best GPU for Llama 3.1 405B (2026)
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 14B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 70B on NVIDIA GeForce RTX 5090
- How to run DeepSeek-R1 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 4090