Questions You Should Know about 150W Desktop power adapter

I would like to know if I can use HP 150W power adapter to charge my laptop which normally uses 135W adapter?

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https://store.hp.com/in-en/default/hp-150w-smart-ac-adapter-4-5mm-w2f74aa.html

Or Can I charge it with 65w charger

HP 65W AC Charger Adapter 4.5mm for HP Pavilion Black (Without Power Cable) https://www.amazon.in/dp/B01NBX5RSB/ref=cm_sw_r_cp_apa_i_AK0YEb9XBD950

I tried to buy its orginal adapter but it is out of stocks in Service center (150w adapter is also out of stock in hp stores) and not available on standard online shopping sites

In some sites , it is available but too expensive for me.

Could you suggest me best  option to buy which will suitable for my laptop ?

Can I use this adapter which is available in my area as well as under my budget (with power charger connector converter)

DELL Original 19.5V 150W Adapter Charger for Alienware M14 M14X M15 https://www.amazon.in/dp/B01LW972B0/ref=cm_sw_r_cp_apa_i_QZ0YEbP1V3CQF

Its output is same as my original charger that is 19.5V

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

• 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:

Goto TDX to know more.

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What is UHF RFID Reader - urovoComponentTypical 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.

Want more information on 150W Desktop power adapter? Feel free to contact us.

Conclusion: Choose Smart, Power Right