Corsair HX Series
Bottom line: The Corsair HX Series: 80 PLUS Platinum efficiency cuts waste heat and wall draw versus Gold units; main trade-off: 1200W is overkill for single-GPU builds under ~650W actual draw.
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Pros & Cons
Pros
- ✓ 80 PLUS Platinum efficiency cuts waste heat and wall draw versus Gold units
- ✓ All Japanese capacitors for tight voltage regulation under sustained load
- ✓ 10-year Corsair warranty, longer than most mid-tier ATX supplies
- ✓ Zero RPM mode stops the 135mm FDB fan entirely at low loads
- ✓ 1200W headroom covers multi-GPU and high-TDP CPU builds
Cons
- ✗ 1200W is overkill for single-GPU builds under ~650W actual draw
- ✗ 325 dollar price sits well above Gold-rated units of the same wattage
- ✗ Fully modular cable set adds install time versus a fixed-cable PSU
- ✗ 135mm fan and long chassis need a roomy PSU shroud to fit cleanly
Manufacturer description
The Corsair HX1200 is a 1200 watt fully modular ATX power supply built for high-performance rigs that pull hard on the 12V rail. Its 80 PLUS Platinum certification means less of the power you draw from the wall turns into waste heat, so your case stays cooler and your electricity bill stays lower than it would with a Gold or Bronze unit at the same load. Corsair specifies all Japanese capacitors inside, which is the detail that matters most when a supply has to hold tight voltage regulation through years of gaming sessions, render jobs, and multi-GPU AI workloads. The fully modular cable set…
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 HX1200 fully modular?
Yes. Every cable detaches, so you connect only the ones your build needs, which clears dead cable bulk out of the case and improves airflow.
How loud is the HX1200 during normal use?
It uses a 135mm fluid dynamic bearing fan with Zero RPM mode, which stops the fan completely at low loads, so the unit is virtually silent when idling or browsing.
What warranty does the Corsair HX1200 come with?
Corsair lists a 10-year warranty on this unit, backed by its technical support. Check the product listing for current terms in your region.
Is 1200W enough for an RTX 5090 or a dual-GPU build?
1200W gives substantial headroom over typical single-GPU systems and is sized for multi-GPU and high-TDP CPU configurations. Add up your components' rated draw to confirm.
What does 80 PLUS Platinum certification actually get you?
Platinum units convert more wall power into usable DC than Gold or Bronze, so you generate less excess heat inside the case and pay less to run the system.
Key Features
- 80 Plus Platinum: Runs cooler and uses less power than less efficient power supplies.Frequency : 47 - 63Hz
- 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 and customer service
- 135mm FDB fan with Zero RPM mode: Virtually silent operation at low loads. 8 PATA connector
- plus12V Rail Switch: Gives the user the choice of a single plus12V rail or multiple plus12V rails
Full Specifications
| Brand | Corsair |
|---|---|
| Wattage | 1200 watts |
| Fan Size | 13.5 centimeters |
| Model Name | HX Series |
| Form Factor | ATX |
| Model Number | CP-9020140-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 | PATA |
| Cooling Method | Air |
| Item Type Name | Computer Power Supply |
| Number of Fans | 1 |
| Output Wattage | 1200 watts |
| Item Dimensions | 5.9 x 7.9 x 3.39 inches |
| Mfr Part Number | CP-9020140-NA |
| Number of Items | 1 |
| 10-year warranty | Backed by Corsair's legendary technical support and customer service |
| 80 Plus Platinum | Runs cooler and uses less power than less efficient power supplies.Frequency : 47 - 63Hz |
| Compatible Devices | Personal Computer |
| Full listing title | Corsair HX Series, HX1200, 1200 Watt, Fully Modular Power Supply, 80+ Platinum Certified, Model Number: CP-9020140-NA |
Ready to buy?
Corsair HX Series, HX1200, 1200 Watt, Fully Modular Power Supply, 80+ Platinum Certified, Model Number: CP-9020140-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.
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