Wathai
Wathai 4010 Blower Fan 12v Centrifugal Fan 40mm Computer Case Tiny Micro Turbine 40x40x10
Bottom line: The Wathai 4010 Blower Fan 12v Centrifugal Fan 40mm Computer Case Tiny ($9.99 on Amazon as of 2026-10-06): Two fans per pack, so you get an on-hand spare for the next failure; main trade-off: 3.86 CFM is low; not a chassis fan, only spot cooling.
As an Amazon Associate, SpecPicks earns from qualifying purchases. Full disclosure →
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Pros & Cons
Pros
- ✓ Two fans per pack, so you get an on-hand spare for the next failure
- ✓ 40x40x10mm footprint fits mini-ITX and retro cases axial fans cannot
- ✓ Centrifugal turbine directs airflow instead of diffusing it across the case
- ✓ Concrete rated specs: 3.86 CFM, 7500 RPM, 24 dBA, 12V 0.1A
Cons
- ✗ 3.86 CFM is low; not a chassis fan, only spot cooling
- ✗ 24 dBA at 7500 RPM is audible in a quiet room
- ✗ 20cm cable may not reach headers in larger cases
- ✗ 0.1A draw at 12V means no USB or 5V operation without a converter
Manufacturer description
The Wathai 4010 blower fan solves the problem every compact build eventually hits: airflow in a space too tight for a conventional axial fan. Each unit measures 40 x 40 x 10mm (1.55 x 1.55 x 0.4 in) and uses a centrifugal turbine design that pushes air directionally rather than diffusing it, which is why these show up in mini-ITX chassis, retro PC cases, VRM and chipset spot-cooling, and 3D printer hotend ducts. Rated specs are concrete: 12V at 0.1A, 3.86 CFM of airflow, 7500 RPM, and 24 dBA. The 20cm (8 inch) cable gives you enough slack to reach a header or a fan controller without an…
SpecPicks Verdict
SpecPicks scored Wathai 4010 Blower Fan 12v Centrifugal Fan 40mm Computer Case Tiny… using a rating × review-volume × price-fit model applied to published specs and reviews across the retro cpu coolers & fans category. Wathai's retro cpu coolers & fans lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for retro cpu coolers & fans of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
What size is this blower fan?
Each fan is 40mm long by 40mm wide by 10mm thick (1.55 x 1.55 x 0.4 inches), the standard 4010 blower footprint.
How many fans come in the package?
Two. Wathai ships this listing as a 2-pack.
How loud is it?
Wathai rates it at 24 dBA at its 7500 RPM operating speed. That is audible up close but modest for a blower of this size.
Will this run off a 5V USB port?
No. It is rated 12V at 0.1A, so you need a 12V source such as a motherboard fan header, Molex, or a dedicated 12V supply.
Can I use it in a 3D printer or outside a PC?
Yes. Wathai lists 3D printer cooling, dashcams, fridge circulation, and attic control alongside mini-ITX and electronics cooling.
Key Features
- Small Centrifugal Fan, Powerful Cooling: 40mm(L) x 40mm(W) x 10mm(H) /1.55x1.55x0.4 in. per fan. Micro pc fan Ideal for DIY cooling projects with limited space. Provides good airflow in compact setups
- Replacement 40x10mm fan: Effectively replace defective fans with this high-performance 4010 blower fan. Keep your devices running smoothly
- Easy Installation, Quick Results: Install the 4010 12V centrifugal fan effortlessly and enjoy immediate cooling benefits. Perfect for beginners and DIY enthusiasts
- 40mm Blower Fan 12V : Suitable for various scenarios: mini-ITX builds, active cooling for electronic devices, dashcams, fridge circulation, 3d printer, and attic control.
- Reliable Performance: Computer blower fan enjoy quiet operation, durability. Rated Voltage/Current :12V 0.1A | Airflow: 3.86CFM | Speed: 7500 RPM | Noise:24dBA | Cable Length: 20cm Or 8 inches
Full Specifications
| Brand | Wathai |
|---|---|
| Model | 2Pcs 4010s12v2p Blower |
| Voltage | 12 Volts (DC) |
| Wattage | 1 watts |
| Material | Plastic |
| Dimensions | 1.55x1.55x0.4 in |
| Unit Count | 1.0 Count |
| Noise Level | 24 Decibels |
| Part Number | 2Pcs 4010s12v2p Blower |
| Compatibility | PC |
| Material Type | Plastic |
| Cooling Method | Air |
| Number of Items | 2 |
| Air Flow Capacity | 2.86 Cubic Feet Per Minute |
| Compatible Devices | Desktop |
| 40mm Blower Fan 12V | Suitable for various scenarios: mini-ITX builds, active cooling for electronic devices, dashcams, fridge circulation, 3d printer, and attic control. |
| Power Connector Type | 2-Pin |
| Replacement 40x10mm fan | Effectively replace defective fans with this high-performance 4010 blower fan. Keep your devices running smoothly |
| Maximum Rotational Speed | 7500 RPM |
| Item Dimensions L x W x H | 1.6"L x 1.6"W x 0.4"H |
| Full listing title | Wathai 4010 Blower Fan 12v Centrifugal Fan 40mm Computer Case Tiny Micro Turbine 40x40x10 for DIY 3D Printer Cooling 2 Pack |
Ready to buy?
Wathai 4010 Blower Fan 12v Centrifugal Fan 40mm Computer Case Tiny Micro Turbine 40x40x10 for DIY 3D Printer Cooling 2 Pack is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-06. Price and availability subject to change.
Related Retro CPU Coolers & Fans
![[2 Pack] ELUTENG 40mm Fan Filter Dustproof Cover USB Cooling Ventilator Plastic Grill 40 * 40mm USB Fan Blower Mesh Kit Compatible for DIY 4cm Computer Case Fan Dirt Filtering](https://m.media-amazon.com/images/I/71PisWd20QL._SL1500_.jpg)
More guides & deep dives from the SpecPicks archive
Browse all articles & guides →- The Complete Voodoo5 5500 AGP Driver Guide (2026 Edition)
- Best Budget Gaming PC Build 2026 — ~$1,000 ($800 on Sale)
- RTX 4070 Super vs RX 7800 XT — Which to Buy in 2026
- Emulation Hardware in 2026: FPGA, Software, and Cart-Reader Ecosystems
- Best Retro Handhelds in 2026 — From $35 to $500
- How to Build a Windows 98 Retro PC in 2026
- Best 1440p Gaming GPUs in 2026
More reviews from the SpecPicks archive
Browse all reviews →- Revive an Old Payphone with a Raspberry Pi Zero 2W
- Best Wireless Productivity Keyboards for Home Office in 2026
- GPT-5.6 Sol Nearly Matches Fable 5 at a Third the Cost: The Local-Rig Angle
- Best Budget Parts for a Local-LLM PC in 2026
- Irtysh 32-Core CPU: Is the 30+ FPS Witcher 3 Claim Real?
- How to run DeepSeek-R1 32B on Apple M3 Ultra
- When Does a Homelab Become a Job?
- Kimi K3 Costs $10.57 per Agentic Task: Is Local Cheaper?
- Raspberry Pi Locator Shuts Down in July: Where to Buy a Pi Now
- AI-Driven Driver Install for Win98: Vision-LLM + 3060 12GB Build (2026)
- Sony to End Physical PlayStation Disc Production by 2028: What It Means for Retro Collectors
- Ryzen 5 5600G vs Ryzen 7 5800X for a Budget 1080p Gaming Build
- How to Backup a NAS on a Budget in 2026
- GLM-5.2 on 12GB VRAM: Quantization and Speed on the RTX 3060
- Inside reusable-agents: A Self-Hostable LLM Agent Framework Driving Two Live Consumer Sites in 2026
- 4K Mini-LED vs 240 Hz QD-OLED: Which Monitor for Work and Play?
- Best SSD for a PS4 Pro Upgrade in 2026: 870 EVO vs BX500
- Why Local RAG Beats Cloud Agents at Follow-Up Questions on an RTX 3060
- Build a Privacy-First Ring Alternative on a Raspberry Pi 4 in 2026
- Panther Lake NPU vs RTX 3060 12GB for Local LLM Inference
- DIY NVIDIA 3D Vision Emitter: Building One with an RP2040
- ProgramBench: Can LLMs Rebuild Programs From Scratch?
- AVX-512 Lifts Linux RAID Up to 41% on AMD Ryzen Chips
- Did Anyone Actually Ditch iCloud or Google One for Self-Hosting?
Earliest SpecPicks reviews
Browse full archive →- Best GPU for Llama 3.1 8B (2026)
- Best GPU for Qwen 3 14B (2026)
- Best GPU for Qwen 3 32B (2026)
- Best GPU for Llama 3.1 70B (2026)
- Best GPU for DeepSeek-R1 32B (2026)
- Best GPU for Llama 3.1 405B (2026)
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 14B on NVIDIA GeForce RTX 5090
- How to run Qwen 3 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 70B on NVIDIA GeForce RTX 5090
- How to run DeepSeek-R1 32B on NVIDIA GeForce RTX 5090
- How to run Llama 3.1 8B on NVIDIA GeForce RTX 4090