Question 1

How many watts do I need for my gaming PC?

Accepted Answer

Most gaming PCs need 650-850W. A system with an RTX 4070 needs about 650W, while RTX 4080/4090 builds should have 850W or more. Use a PSU calculator or add 100-150W headroom above your estimated total draw.

Question 2

What does 80 Plus certification mean?

Accepted Answer

80 Plus certification indicates power supply efficiency. 80+ Bronze is at least 82% efficient, Gold is 87%, Platinum is 90%, and Titanium is 94% at typical loads. Higher efficiency means less wasted energy as heat and lower electricity bills.

Question 3

Is a modular PSU worth it?

Accepted Answer

Modular PSUs allow you to use only the cables you need, improving airflow and cable management. Fully modular units cost more but make building easier. Semi-modular PSUs offer a good balance of convenience and value.

Question 4

What is a good price per watt for a PSU?

Accepted Answer

For 80+ Gold PSUs, expect to pay around $0.10-0.15 per watt. Bronze units are cheaper at $0.08-0.12/W, while Platinum can reach $0.15-0.25/W. Our tracker compares price per watt to help you find the best value.

Question 5

What's the difference between ATX, SFX, and SFX-L power supplies?

Accepted Answer

ATX is the standard desktop size (150mm x 86mm x 140-180mm). SFX is smaller (125mm x 63.5mm x 100mm) for compact builds. SFX-L is slightly larger than SFX with better cooling. Choose based on your case compatibility.

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