EVGA

EVGA 100-N1-0400-L1 400W Power Supply - Budget PSU

4.6 (8876 reviews)

A budget-friendly 400W power supply with essential protections and quiet cooling for basic PC builds.

$140.00*
In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jun 27, 2026.Price and availability are subject to change.

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Overview

The EVGA 400 N1 Power Supply is designed for builders who need an affordable and functional PSU for basic system configurations. With 400 watts of power delivered through a single +12V rail rated at 30A, it provides enough headroom for entry-level processors and modest discrete graphics cards. Essential electrical protections are built in to safeguard your components, while the ultra-quiet fan design keeps acoustic levels low so the PSU does not become a distraction during everyday use.

As a non-modular unit, all cables come permanently attached, which means unused connectors will need to be tucked away inside the case. This is a common trade-off at this price point, and for compact or budget builds where cable management is less critical, it is a manageable compromise. EVGA backs the 400 N1 with a 2-year warranty, giving buyers a reasonable assurance of reliability. For office machines, home theater PCs, and other low-demand systems, this power supply covers the essentials without adding unnecessary cost.

Specifications

Brand
EVGA
Model
100-N1-0400-L1
Wattage
400W
+12V Rail
30A (single rail)
Fan
Ultra-quiet design
Modularity
Non-modular
Warranty
2 years

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Pros & Cons

👍 Pros

  • Very affordable entry point for basic and budget PC builds
  • 30A on a single +12V rail provides straightforward power delivery
  • Ultra-quiet fan design keeps noise levels down during operation
  • Backed by EVGA's 2-year warranty

👎 Cons

  • No 80 Plus efficiency rating, meaning higher energy waste and heat output compared to certified units
  • Non-modular design leaves unused cables cluttering the case
  • 400W capacity limits upgrade options for higher-end graphics cards or additional components
  • Only a 2-year warranty, shorter than the 5- to 10-year warranties on higher-tier PSUs

Frequently Asked Questions

The EVGA 400 N1 delivers 400 watts of continuous power, suitable for basic system builds.
The single +12V rail provides 30A, which is sufficient for entry-level processors and modest graphics cards.
No, the EVGA 400 N1 is a non-modular power supply, meaning all cables are permanently attached.
EVGA includes a standard 2-year warranty with the 400 N1.
No 80 Plus certification is listed for the EVGA 400 N1, which is typical for power supplies in this budget tier.