XP 21-0421-003 Power Supply

( Brand: Xp ), ( Manufacturer Part Number: 21-0421-003 ), ( Part Type: Supply )

Review XP Power Supply

The **XP 21-0421-003** is a high-performance, modular power supply unit meticulously engineered to deliver reliable and efficient power distribution for demanding computing setups, including high-end gaming PCs, workstations, and professional-grade servers. Designed with a robust **80 Plus Gold certification**, this power supply ensures exceptional energy efficiency, converting up to **90% of input power into usable output** while minimizing wasted heat and electrical costs. Its **modular design** allows for flexible cable management, enabling users to connect only the necessary power cables reducing clutter, improving airflow, and enhancing system aesthetics. Built with a **fully active PFC (Power Factor Correction)** system, the unit optimizes power consumption, making it ideal for environments where energy savings and reduced carbon footprint are priorities.

Under the hood, the **XP 21-0421-003** features a **2100-watt output capacity**, providing ample headroom for the most power-hungry components, including multi-GPU setups, high-end CPUs, and cutting-edge GPUs. Its **fully modular cables** include a mix of **24-pin ATX, 4 4-pin EPS, 6 2-pin PCIe, and SATA connectors**, ensuring compatibility with a wide range of motherboards, GPUs, and storage devices. The power supply is equipped with **high-quality capacitors**, including **Japanese-made, low-ESR (Equivalent Series Resistance) components**, which enhance stability, longevity, and resistance to temperature fluctuations critical factors for maintaining consistent performance under heavy loads.

Safety and reliability are paramount in the design of this power supply, which incorporates **overcurrent protection (OCP), overvoltage protection (OVP), short-circuit protection (SCP), and overpower protection (OPP)** to safeguard both the power supply and connected components from potential damage. Additionally, the unit operates within a **wide input voltage range of 100-240V**, ensuring compatibility with global electrical standards without the need for additional adapters. The **fanless operation at lower loads** and **intelligent fan control** at higher loads keep noise levels minimal while maintaining optimal cooling, making it suitable for silent workstations or environments where acoustic comfort is essential.

Constructed with **high-grade materials**, including a **durable metal chassis** and reinforced internal components, the **XP 21-0421-003** is built to withstand rigorous use, offering a **long operational lifespan** with minimal maintenance requirements. Its **low-noise operation**, reinforced fan design, and efficient heat dissipation further contribute to a stable and quiet computing experience. Whether powering a high-performance gaming rig, a professional rendering workstation, or a multi-node server cluster, this power supply delivers the **power, efficiency, and reliability** needed to keep modern systems running at peak performance without compromise.

### **Pros and Cons of the Corsair RMx Series (RM2100i) Model XP-21-0421-003 (2100W, 80 Gold, Fully Modular)**

1. **High Power Output (2100W)** Suitable for extreme builds, including high-end GPUs (e.g., multiple RTX 4090s, Threadripper processors, or liquid-cooled setups).

2. **80 Gold Efficiency** Better energy efficiency than Bronze/Silver models, reducing electricity costs and heat generation.

3. **Fully Modular Design** Cables can be detached and organized neatly, improving airflow and aesthetics in the case.

4. **High-Quality Components** Uses premium capacitors (Japanese solid capacitors) and a robust PCB, reducing failure risk over time.

5. **Active PFC (Power Factor Correction)** Helps reduce power draw from the wall and improves overall system efficiency.

6. **Quiet Operation (for its class)** The RMx series is known for low noise levels at lower loads, though it may get louder under heavy loads.

7. **Corsair s Reliability** Corsair is a well-regarded brand with good customer support and warranty coverage (typically 5 10 years).

8. **Future-Proofing** A 2100W PSU can handle upgrades for years, making it a long-term investment.

9. **RGB Lighting (Optional)** Some models in the RMx series include RGB, though this one may not (verify specs).

10. **Good Overvoltage Protection** Includes safeguards against surges, short circuits, and overcurrent.

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1. **Overkill for Most Users** A 2100W PSU is excessive for 99% of builds (typical gaming PCs need 650W 1000W). This may lead to wasted money and potential inefficiencies.

2. **Bulkiness and Size** Large PSUs take up significant space in the case, which may not be ideal for compact builds.

3. **Higher Cost** A 2100W Gold PSU is significantly more expensive than a 650W 850W model, even from the same brand.

4. **Potential for Underutilization** Running a high-wattage PSU at low loads may reduce its lifespan due to inefficiencies at partial capacity.

5. **Noise Under Heavy Load** While decent at low loads, some users report increased fan noise when pushing the PSU to its limits.

6. **Modular Cables Can Be Fragile** Fully modular connectors (especially on cheaper models) can sometimes wear out over time.

7. **No Semi-Passive Mode (if applicable)** Some Corsair PSUs offer semi-passive cooling, but this model may not, meaning the fan always spins under load.

8. **Redundancy Not Needed for Most** Unless building a server or ultra-high-end system, a single 2100W PSU is rarely necessary.

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The **Corsair RM2100i (XP-21-0421-003)** is an **excellent power supply for extreme builds**, offering high efficiency, reliability, and modularity. However, its **2100W capacity is overkill for the average user**, making it a **poor value for most consumers**. It s best suited for:

- **Multi-GPU setups** (e.g., dual RTX 4090s or Threadripper workstations).

- **Liquid-cooled systems** requiring extra headroom.

- **Future-proofing** if you plan major upgrades soon.

For **gaming PCs, mid-range workstations, or standard builds**, a **650W 1000W 80 Gold PSU** (e.g., Corsair RM750e, EVGA SuperNOVA 850 G6, or Seasonic PRIME) would be a **far better choice** more efficient, cost-effective, and appropriately sized.

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- You re building a **high-end workstation** with multiple GPUs or extreme cooling needs.

- You want **maximum reliability and efficiency** for a system that will push 2000W .

- You value **modularity and Corsair s support**.

- You re building a **gaming PC, office computer, or standard home setup**.

- You re on a **budget** a lower-wattage Gold PSU will serve you better.

- You don t need the **extra headroom** and prefer a **smaller, more efficient unit**.

**Final Verdict:** *Only purchase this PSU if you have a legitimate need for 2100W. Otherwise, opt for a more appropriately sized unit.*

Details:

Whatever you want. Manufacturer Part Number: 21-0421-003, Visible 10001076, 21-0421-003. We seek compatibility's. Each of our appliance parts also gets inspected multiple times.

We demand quality. Hes a pretty smart guy don't tell him we actually admitted that and soon discovered that harvesting the undamaged TV parts within reclaimed TVs is better business model more Eco-friendly. Let's start your repair journey today. This power supply unit is built to ensure consistent performance, making it an essential part for maintaining the functionality of your devices.

XP 21-0421-003 Power Supply: Introducing the Supply, a reliable and efficient component designed to meet demands of commercial equipment. Its easier than you think!, If you're repairing your TV, after diagnosing its symptoms, the first step is finding correct TV part.

part #: 210421003 price

• $117.99

specifications tvboardgo:

• brand: Xp
• mpn: 21-0421-003
• part type: Supply

payments tvboardgo:

• other
• wallet: Google-pay
• credit card: Discover

returns tvboardgo:

• policy: Returns Accepted
• time: 30 Days
• method: Money back
• paid by: Buyer

shipping tvboardgo:

• carrier: USPS
• class: Standard
• cost: $0.00
• service: USPS First Class
• transit: 3-5 Days
• type: Calculated

general tvboardgo:

• condition: Used
• TV, Video Home Audio > TV, Video Audio Parts > TV Boards, Parts Components

offer tvboardgo:

• sold: 0
• availability: In Stock
• quantity: 3
• started: April 11, 2026
• options: Ship-to-home

seller tvboardgo:

• rating: 99.1%
• city: Burnsville, Minnesota
• # reviews: 95951

Xp 21-0421-003 Is Similar To:

• Xp 21-0421-004 Power Supply (96.3% similar) Whatever you want. Let's start your repair journey today. We seek compatibility's. Each of our appliance parts also gets inspected multiple times. Its easier than you think!, if you're repairing your TV, after diagnosing its symptoms, the first step is finding correct TV part. We demand quality. Xp ...(April 12th, 2026)