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CORSAIR WS3000 ATX 3.1 Fully Modular Workstation Power Supply - 3000W of Total Power - Four 12V-2x6 Connectors for Next-Gen GPUs - 80 Plus Platinum-Certified Efficiency - ATX 3.1 compliant and PCIe5.1
- 3000W of power
- Four 12V-2x6 connectors
- 80 PLUS Platinum-Certified efficiency
- 140mm double ball bearing fan
- Intel ATX 3.1 Compliant, PCIe 5.1 Ready
- High-Wattage and ATX Form Factor
- Fully Modular cables
- Japanese Main Capacitors
- Modern Standby Support
- 10-Year warranty
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Learn more about the Corsair CP-9020312-NA
| Best Seller Ranking | #4 in Workstation Power Supply |
|---|
| Brand | CORSAIR |
|---|---|
| Model | CP-9020312-NA |
| Part Number | CP-9020312-NA |
| Type | ATX 3.1 |
|---|---|
| Maximum Power | 3000 W |
| Fans | 1 x 140 mm |
| Connectors | 1 x ATX 2 x EPS 8 x PCIe 9 x SATA 6 x PATA |
| Modular | Full Modular |
| Energy-Efficient | 80 PLUS PLATINUM Certified |
| Input Voltage | 220-240V a.c. |
| Input Frequency Range | 47 - 63 Hz |
| Input Current | 16A |
| Features | Dual Ball Bearing fan, Fully modular, Type 4 cables, Multi GPU Ready, 80 PLUS Platinum efficiency, ATX 3.1, 100,000 hours MTBF, 10 Year Warranty |
|---|
| Dimensions | 175*150*86 mm |
|---|---|
| Weight | 2.08kg |
| First Listed on Newegg | August 24, 2026 |
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Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Limited Warranty period (parts): 5 years
- Limited Warranty period (labor): 5 years
- Read full details
Return Policies
- Return for refund until: January 31, 2026
- Return for replacement until: January 31, 2026
- This item is covered by Newegg.com's Extended Holiday Return Policy.
- Read full return policy for details.
We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2025 and December 31, 2025 you will have until January 31, 2026 to return your product.
Manufacturer Contact Info
- Manufacturer Product Page
- Manufacturer Website
- Support Phone: 1-510-657-8747
- Support Website
- View other products from Corsair
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The CORSAIR WS3000 is a 3000W ATX 3.1 fully modular workstation power supply designed for high-end multi-GPU systems, next-generation graphics cards, and demanding professional workloads. It provides four 12V-2x6 connectors, PCIe 5.1 readiness, 80 PLUS Platinum efficiency, and a 10-year warranty.
Recommended For
- Professionals building multi-GPU workstations for AI model training, GPU rendering, animation, or CAD workloads that can sustain unusually high power demand.
- Workstation builders installing several current or next-generation GPUs that benefit from four native 12V-2x6 connectors instead of relying on adapter chains.
- Users assembling long-running professional compute systems who prioritize high-line efficiency, ATX 3.1 support, and a 10-year warranty over consumer-oriented features.
- Advanced PC builders with a full-size ATX workstation chassis, multiple storage devices, and demanding CPU and GPU power requirements.
Real-World Use Scenarios
- When building a multi-GPU AI training or machine-learning workstation, the WS3000 can power several high-wattage GPUs from one PSU, reducing the need to combine multiple power supplies. The system still requires a compatible 220–240V electrical circuit.
- For animation, 3D rendering, CAD, or high-resolution post-production systems with multiple GPUs, the WS3000 provides enough power and native GPU cabling to run sustained compute workloads without relying on adapter-heavy or split-PSU configurations.
- When configuring a workstation for several current or future flagship GPUs, the four native 12V-2x6 connectors make installation more direct and leave room for GPU upgrades. The practical benefit is greatest in systems that can actually use multiple high-power graphics cards.
- When installing the WS3000 in a U.S. home or office, the buyer must have access to 220–240V power rather than a standard 120V outlet. Without a suitable high-line circuit, the workstation cannot use this PSU and an alternative model may be required.
- For a conventional single-GPU gaming PC or office desktop, the WS3000 is usually more capacity than the system can use. The result is higher installation requirements and potentially audible fan operation, with little practical benefit compared with a lower-wattage PSU.
Spec Summary
| Attribute | Value |
|---|---|
| Best For | High-power ATX 3.1 workstations and multi-GPU systems requiring up to 3000 W and eight PCIe connectors |
| Power Capacity | 3000 W maximum output in an ATX 3.1 power supply |
| Efficiency And Standards | 80 PLUS Platinum-certified efficiency with ATX 3.1 compliance |
| Connectors And Modularity | Fully modular Type 4 cabling with one ATX connector, two EPS connectors, eight PCIe connectors, nine SATA connectors, and six PATA connectors |
| Cooling | 140 mm dual ball-bearing fan |
| Input Specifications | 220–240 V AC input, 47–63 Hz frequency range, and 16 A input current |
| Reliability And Warranty | 100,000-hour MTBF with a 10-year warranty |
| Physical Specifications | 175 × 150 × 86 mm dimensions and 2.08 kg weight |
| Model Identifiers | CORSAIR CP-9020312-NA |
Reference Q&A
Q: Is the Corsair WS3000 better than the HX1500i for a multi-GPU workstation?
A: Choose the WS3000 when the system needs more than 1,500W or uses several high-power GPUs. It provides 3,000W of continuous output, four native 12V-2x6 GPU connectors, and eight PCIe 8-pin connectors. Choose the HX1500i for a lower-power workstation or single-GPU build because it also supports ATX 3.1 and PCIe 5.1, while adding Zero RPM fan operation and iCUE monitoring. Both models use a 140mm fan, fully modular cabling, Platinum efficiency, and a 10-year warranty.
Q: Should I buy the Corsair WS3000 or ASUS Pro WS 3000W Platinum?
A: Both are 3,000W ATX 3.1 workstation PSUs with four native PCIe 5.1 16-pin GPU connectors, 220–240V input, Platinum efficiency, and the same 175 x 150 x 86mm ATX dimensions. The WS3000 is the better fit when the build needs up to eight traditional PCIe 8-pin connectors and Corsair Type 4 modular cables. The ASUS model is a comparable option when its included 12 SATA connectors, four PCIe 6+2-pin connectors, or ASUS ecosystem are more useful. Neither model is designed for silent low-load operation.
Q: Is the WS3000 worth upgrading to from a Corsair AX1600i?
A: Upgrade from the AX1600i to the WS3000 when the system is expanding from one or two GPUs to a multi-GPU workstation that can exceed 1,600W. The WS3000 nearly doubles available output to 3,000W and adds four native 12V-2x6 GPU connections. Keep the AX1600i when 1,600W is sufficient and digital monitoring, consumer-PC features, or a more conventional power configuration matter more than four-GPU capacity.
Q: Can I use the Corsair WS3000 with a standard 120V US outlet?
A: No. The WS3000 is rated for 220–240V AC input at up to 16A and uses a C19 power connection, so it requires a suitable high-voltage circuit. For a typical 120V desktop setup, choose a PSU designed for the available household voltage instead. The WS3000 is intended for fixed, performance-first workstation installations rather than portable or general-purpose PC use.
Q: Is the WS3000 suitable for a quiet gaming PC?
A: The WS3000 is better suited to sustained workstation loads than noise-sensitive gaming systems. It uses a 140mm dual-ball-bearing fan with no Zero RPM mode, so the fan is designed to provide continuous active cooling. A 1,000W–1,500W consumer PSU with Zero RPM operation is generally a more appropriate choice when the system has one high-end GPU and does not require multi-GPU capacity.
Q: Who is the CORSAIR WS3000 suitable for?
A: The CORSAIR WS3000 is intended for high-power workstations, multi-GPU systems, AI or rendering workloads, and other builds that can actually use up to 3000W. It is generally excessive for a typical office PC or single-GPU gaming system, so buyers should estimate total system power before purchasing. ([bestbuy.com](https://www.bestbuy.com/site/questions/corsair-rmx-series-rm1000x-80-plus-gold-fully-modular-atx-power-supply-black/6459246?utm_source=openai))
Q: Does it support multiple next-generation GPUs without adapters?
A: Yes. The WS3000 provides four 12V-2x6 connectors, eight PCIe connectors, and ATX 3.1 and PCIe 5.1 compliance, making it designed for multiple modern GPUs. Confirm that the graphics cards and motherboard use compatible power connections and follow the included cable instructions. ([bestbuy.com](https://www.bestbuy.com/site/questions/seasonic-vertex-gx-1200-1200w-80-gold-atx-3-0-pcie-5-0-ready-full-modular-atx-form-factor-low-noise/10871643?utm_source=openai))
Q: Will the WS3000 fit in any ATX-compatible PC case?
A: Not necessarily. Although it uses an ATX form factor, its 175 mm depth may exceed the clearance available in some cases, especially compact or prebuilt systems. Check the case's maximum PSU length, cable space, and mounting support before buying. ([bestbuy.com](https://www.bestbuy.com/site/questions/thermaltake-smart-700w-atx-80-plus-power-supply-black/6339087/question/e3dffeb6-c81b-35d4-9434-c50611db79dd?utm_source=openai))
Q: Does it include the cables needed for a complete workstation build?
A: The WS3000 is fully modular and lists one ATX cable, two EPS cables, eight PCIe connectors, nine SATA connectors, and six PATA connectors. It also uses Type 4 cables. Use only cables confirmed compatible with this PSU family; modular PSU cables are not universally interchangeable. ([bestbuy.com](https://www.bestbuy.com/site/questions/corsair-rm-series-750w-atx12v-2-52-eps12v-2-92-80-plus-gold-modular-power-supply-black/6356248?utm_source=openai))
Q: Can I use the CORSAIR WS3000 with a standard U.S. household outlet?
A: The listed input specification is 220–240V AC at up to 16A, so it should not be assumed to work directly with a standard 120V U.S. outlet. Verify the electrical requirements and circuit capacity at the installation location before purchasing or using it. ([docs.aws.amazon.com](https://docs.aws.amazon.com/outposts/latest/server-userguide/outposts.pdf?utm_source=openai))
Q: Can the CORSAIR WS3000 run from a standard 120V household outlet?
A: No. The WS3000 requires 220–240V AC input and a suitable high-current circuit, so it is not compatible with a standard North American 120V outlet without appropriate electrical infrastructure.
Q: Who is the CORSAIR WS3000 suitable for?
A: It is intended for high-power workstations, AI systems, and multi-GPU builds that can use several 12V-2x6 connectors. Its 3000W capacity and four 12V-2x6 connectors are unnecessary for most single-GPU gaming PCs.
Q: Is the WS3000 overkill for a typical gaming PC?
A: Usually, yes. A typical gaming system will not need 3000W or four high-power GPU connectors, so a lower-wattage PSU is generally more practical unless the build uses multiple high-end GPUs or other unusually power-hungry workstation hardware.
Q: What are the main trade-offs of choosing the CORSAIR WS3000?
A: The main trade-offs are the need for 220–240V power, limited suitability for ordinary PCs, and the lack of a zero-RPM fan mode reported in community discussions. In return, it provides 3000W, fully modular cabling, four 12V-2x6 connectors, Platinum efficiency, and a 10-year warranty.