Questions You Should Know about 150W Desktop power adapter

Hi @wilhemina,

You can find more information on our web, so please take a look.

Your HP Pavilion P2-W Desktop PC power cord p/n is: -001 (see link: HP PartSurfer under "Power Cord").

Since HP does not have this part in stock, you can get it for $7.99 via Amazon here: Amazon.com: Power Cord Cable Fit for Lenovo IBM Dell Asus Vivobook Samsung Toshiba Thinkpad Ideapad ...

[EDIT:] Or even less expensive via eBay ($4.95 & free shipping): HP Compaq 6FT 1.8M 3 Prong AC Power Cord -001 -001 - | eBay

Hope this helps.

Kind Regards,

NonSequitur777

@GK,

HP parts are sometimes, well, challenging to identify.  What would help me is to know what the specific product number (NOT serial number) of your AIO is.

Second, what can you tell me about your original (150 watt) power adapter -does it look the picture below/does your AIO require 19.5 volts?

-Btw, generally speaking, if your 230 watt power supply unit has the same supply jack AND provides exactly the same voltage as your original 150 watt power supply adapter, you should be OK.  I did the same for an HP Compaq Elite USDT Upgrade project, where I changed to a 230 watt power supply unit (HP -001 230W 19.5V 11.8A) instead of the standard OEM 135 watt power supply adapter (HP -001 135 watt 19.5V 6.9A).

.

Kind Regards,

NonSequitur777

In the world of PC building and upgrades, one component that often gets overlooked is the power supply unit (PSU). Yet, it plays a critical role — not just in powering your system, but in ensuring stability, safety, and efficiency. One of the most common questions among builders and buyers is: How much wattage do I really need for my power supply?

Let’s break down the answer and help you choose the right wattage for your build — without overspending or underpowering your components.

Why Wattage Matters

The wattage of a power supply indicates how much total power it can deliver to your components. If your PSU doesn’t supply enough power, your PC can crash, throttle performance, or even fail to boot. On the other hand, an unnecessarily high-wattage PSU can be inefficient, cost more, and take up more space.

Finding the sweet spot ensures:

• System stability under full load

• Room for future upgrades

  You will get efficient and thoughtful service from TDX.

• Optimal efficiency and lower electricity bills

How to Calculate Your Power Needs

To estimate the wattage you need, sum the power consumption of your system’s major components:

ComponentTypical Power RangeCPU65W – 150WGPU150W – 450W+Motherboard30W – 80WRAM3W – 15W per stickStorage (HDD/SSD)5W – 10W eachFans/Cooling2W – 6W per fanPCIe Devices10W – 60W eachOptical Drives15W – 25W (if used)

Add 20–30% headroom to handle power spikes and potential upgrades.

Common Build Scenarios & Recommended Wattage

Here’s a quick reference for typical PC configurations:

Basic Office or Media PC

• Integrated graphics, low-power CPU, 1–2 drives

• Recommended: 300W – 400W

Mainstream Gaming Build

• Mid-range CPU (e.g., Ryzen 5, Core i5), RTX / RX

• Recommended: 500W – 650W

High-End Gaming or Streaming PC

• High-performance CPU + RTX / RX XTX

• Recommended: 750W – W

Workstation or Multi-GPU Setup

• Threadripper, Xeon, Dual GPUs, multiple drives

• Recommended: W – W

Pro Tips When Choosing PSU Wattage

1. Use a Trusted PSU Calculator: Online calculators (from brands like Seasonic, Cooler Master, or be quiet!) give reliable estimates.

2. Check 12V Rail Capacity: Most modern components draw power from the 12V rail, so make sure it can handle your GPU and CPU together.

3. Look for Efficiency: A 750W 80+ Gold PSU can outperform a W generic unit in real-world usage.

4. Plan for Upgrades: Leave 100–150W headroom if you plan to upgrade to a stronger GPU or add more storage.

5. Avoid Overkill: A W PSU in a budget build won’t improve performance and could reduce efficiency at low loads.

Should You Future-Proof with ATX 3.1?

Newer power-hungry GPUs (especially from NVIDIA) now use the 12VHPWR or 12V-2x6 connector, requiring ATX 3.0/3.1 compliant PSUs. These can handle higher transient loads and are more future-ready.

If you’re buying a PSU in or beyond, consider an ATX 3.1-certified unit even if you don’t need it yet — especially if you're building a system with PCIe 5.0 GPUs.

Final Recommendations

Use CaseIdeal WattageEfficiency RatingOffice / HTPC350W – 450W80+ BronzeMid-Tier Gaming550W – 650W80+ GoldHigh-End Gaming750W – W80+ Gold / PlatinumCreator / WorkstationW – W80+ Platinum

Bonus Tip: Always choose a power supply from a reputable brand — GameMax, Seasonic, Corsair, be quiet!, Cooler Master, etc. Quality and protections matter just as much as wattage.

The company is the world’s best 150W Desktop power adapter(cs,hr,ms)(ms,pt,ja) supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.

Conclusion: Choose Smart, Power Right