Apevia ITX-PFC400W Mini ITX/Flex ATX / 1U 400W Fully Modular Power Supply, Full Range Active PFC 90-264V, AC for POS AIO System Desktop Gaming Server Small Form Factor (Flex ITX) Computer PSU
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AI Verdict
This 400W fully modular Flex ATX power supply with a 40mm fan is for budget SFF builds where noise isn't a top concern.
This 400W fully modular Flex ATX power supply fits specific small form factor builds due to its compact dimensions and connector set, including a 6+2 pin PCIe. However, its 40mm fan is a significant noise concern, and the brand's history suggests potential reliability issues, making it a compromise for budget-constrained builds.
If noise is a concern, look for Flex ATX PSUs with larger fans (e.g., 80mm) or those specifically marketed for silent operation.
Regret Score™
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Pros
- Its 160mm x 73.66mm x 35.5mm dimensions fit Mini ITX/Flex ATX cases.
- The fully modular design means you only connect the cables you need, reducing clutter.
- Includes a 6+2 pin PCIe connector for graphics cards.
- Features Overvoltage, Overload, Overcurrent, Heating, and Short Circuit protections.
- Offers full range active PFC from 90-264V.
Cons
- The 40mm double ball bearing fan is frequently described as "crazy loud" under load.
- Some users report a history of reliability issues and quality control concerns with Apevia PSUs, including failures.
- Coil whine has been reported in similar Apevia models when the system is idle.
- Cable lengths might be restrictive for cable management in some extremely tight SFF cases.
Dimension Scores
The 400W output is adequate for low-to-mid power SFF builds, but the lack of an 80 Plus certification means its efficiency is unverified.
The 40mm fan is frequently reported as "crazy loud" by users, a significant drawback for most systems.
Apevia has a reputation for inconsistent quality control and some users have reported failures or instability with their PSUs.
Its fully modular design significantly aids cable management in tight SFF cases by allowing only necessary cables to be connected.
Best For
- Budget-focused Mini ITX or Flex ATX builds where component power draw is under 250W.
- Small form factor systems where the PC will be placed far from the user or in an enclosure.
- Basic office PCs or home theater PCs (HTPCs) with low-power components.
- Users willing to perform a fan swap to reduce noise.
Not Recommended For
- High-performance gaming rigs with power-hungry GPUs or CPUs.
- Quiet computing environments where fan noise is a critical factor.
- Mission-critical systems requiring high reliability and longevity.
Watch Out For
- The 40mm cooling fan is reportedly "crazy loud," making it unsuitable for quiet setups without a fan replacement.
- Some Apevia PSUs have a history of reliability issues, with reports of units failing or causing instability, especially under higher loads.
- A user reported coil whine from a similar Apevia SFX-AP400W when there was no system draw.
- The PSU requires all cables to be properly connected to the PC to power on, not just the wall outlet.
Full Specifications
| ASIN | B0CWN49V13 |
| Brand | Apevia |
| Series | ITX-PFC400W |
| Wattage | 400 watts |
| Model Name | ITX-PFC400W |
| Form Factor | Mini ITX/Flex ATX |
| Item Weight | 2.23 pounds |
| Manufacturer | Apevia Corp |
| Connector Type | EPS, PCI Express |
| Cooling Method | Air |
| Output Wattage | 400 |
| Item model number | ITX-PFC400W |
| Compatible Devices | Computer |
| Product Dimensions | 6.3 x 2.9 x 1.4 inches |
| Power Supply Design | Full Modular |
| Item Dimensions LxWxH | 6.3 x 2.9 x 1.4 inches |
| Item dimensions L x W x H | 6.3 x 2.9 x 1.4 inches |
What Buyers Say
This Apevia ITX-PFC400W PSU is a bit of a gamble, honestly. While it's fully modular and fits those tiny cases, users keep bringing up how loud that 40mm fan gets, which is a real buzzkill for anyone wanting a quiet PC. There's also a recurring theme of skepticism about Apevia's reliability, with some folks reporting units failing or acting unstable, especially when pushed. On the flip side, if you're building something super basic and don't mind the noise, it gets the job done for the price.
“Man, this thing is LOUD. My tiny PC sounds like a jet engine now, but hey, it powers my cheap GPU so I guess it works for now. I just hope it doesn't blow up like some other Apevia stuff I've heard about.”
Common Praise
- The compact 160mm x 73.66mm x 35.5mm size fits Mini ITX/Flex ATX cases.
- Fully modular cabling helps keep small builds tidy.
- It provides enough power for undervolted components like a Ryzen 5 7500F and 5060LP drawing 140W.
- The inclusion of a 6+2 pin PCIe connector is useful for compact gaming builds.
Common Complaints
- The 40mm fan creates a "crazy loud" noise, making it unsuitable for quiet setups.
- Concerns about overall brand reliability and quality control are frequently mentioned, with some users experiencing failures.
- Some users reported coil whine from similar Apevia PSUs when the system is idle.
- Overclocking can lead to instability and "funny noises" from the PSU.
Ownership Tips
- The 40mm fan noise becomes noticeable even with light loads, not just under stress.
- Some users have resorted to fan swaps to mitigate the noise issue.
- The fully modular cables are a blessing for routing in cramped SFF cases, but cable stiffness can still be a challenge.
- You really need to make sure all connections are solid, otherwise it just won't power on.
Frequently Asked Questions
What are the dimensions of this power supply?
The Apevia ITX-PFC400W measures 160mm in length, 73.66mm in width, and 35.5mm in height (6.3" x 2.9" x 1.4").
Is this power supply fully modular?
Yes, it is a fully modular power supply, meaning you only connect the cables your system needs.
Does this PSU have a PCIe connector for a graphics card?
Yes, it includes one 6+2 pin PCIe connector, which can be used for 6-pin or 8-pin graphics card power.
How loud is the fan on this power supply?
User feedback indicates the 40mm double ball bearing fan can be "crazy loud" under load, making it noticeable in quiet environments.
Will this power supply work with a 20-pin motherboard?
Yes, the 20+4pin main power connector can be used for either 20-pin or 24-pin motherboards.
What protections does this power supply offer?
It includes Overvoltage Protection (OVP), Overload Protection (OLP), Overcurrent Protection (OCP), Heating Protection (OTP), and Short Circuit Protection (SCP).
Buying Guide
When you're looking at a power supply, especially for a small PC, you need to think about more than just the wattage. The form factor, like Mini ITX/Flex ATX for this one, dictates if it'll even fit in your case. Then, consider if it's modular; fully modular means fewer unused cables cluttering up your build, which is a big deal in tiny cases. Lastly, don't ignore the fan size and user reviews about noise, because a loud PSU can ruin your experience.
Wattage (400W)
This is the maximum power your PSU can deliver. Think of it like the horsepower of a car; you need enough to get where you're going, but too much is overkill and too little means your system won't run or will be unstable. For a 400W unit, it's enough for basic systems or those with low-power CPUs and GPUs.
Form Factor (Mini ITX/Flex ATX)
This is the physical size and shape of the power supply. It's like buying shoes; they have to fit your feet (or in this case, your PC case). A Mini ITX/Flex ATX PSU is specifically designed for compact, small form factor cases where standard ATX PSUs won't fit.
Modular (Fully Modular)
This refers to how the cables connect. A fully modular PSU lets you detach every cable you don't need. Imagine building with LEGOs and only using the pieces you actually want, instead of having a bunch of extra bricks hanging off. This makes cable management much cleaner, especially in small cases.
Fan Size (40mm)
The fan cools the power supply. A smaller fan, like 40mm, often has to spin faster to move the same amount of air as a larger fan, which usually means more noise. It's like a tiny hairdryer versus a big box fan; the hairdryer is louder for its size. If you want a quiet PC, a 40mm fan is usually a red flag.
Alternatives
If this PSU doesn't fit, look for Flex ATX units with an 80 Plus Bronze or higher rating for better efficiency, or those with larger fans (e.g., 80mm) for quieter operation, even if it means a slightly higher price.
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