---
product_id: 73699741
title: "Bgears b-Blaster 140x38 (PWM Version) Extreme Cooling Gaming PC & Mining Machine Fan, Hi-Speed 5200RPM w/Airflow of 308 CFM, 2 Ball Bearing Designed for Extended Life & high Performance, 4 Wire Black"
brand: "bluegears"
price: "258 zł"
currency: PLN
in_stock: true
reviews_count: 11
category: "Bluegears"
url: https://www.desertcart.pl/products/73699741-bgears-b-blaster-140x38-pwm-version-extreme-cooling-gaming-pc
store_origin: PL
region: Poland
---

# 308 CFM airflow 2 ball bearing for durability 5200 RPM extreme speed Bgears b-Blaster 140x38 (PWM Version) Extreme Cooling Gaming PC & Mining Machine Fan, Hi-Speed 5200RPM w/Airflow of 308 CFM, 2 Ball Bearing Designed for Extended Life & high Performance, 4 Wire Black

**Brand:** bluegears
**Price:** 258 zł
**Availability:** ✅ In Stock

## Summary

> 🔥 Dominate heat with the b-Blaster beast! 💨

## Quick Answers

- **What is this?** Bgears b-Blaster 140x38 (PWM Version) Extreme Cooling Gaming PC & Mining Machine Fan, Hi-Speed 5200RPM w/Airflow of 308 CFM, 2 Ball Bearing Designed for Extended Life & high Performance, 4 Wire Black by bluegears
- **How much does it cost?** 258 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/73699741-bgears-b-blaster-140x38-pwm-version-extreme-cooling-gaming-pc)

## Best For

- bluegears enthusiasts

## Why This Product

- Trusted bluegears brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Japanese 2 ball bearing design ensures extended life and rock-solid reliability.
- • **Turbocharged Speed:** Roars at 5200 RPM for relentless performance when it matters most.
- • **Precision PWM Control:** 4-wire PWM connector lets you fine-tune fan speed for the perfect balance of power and noise.
- • **Unmatched Cooling Power:** Blasts 308 CFM airflow to keep your rig ice-cold under pressure.
- • **Certified Safety & Quality:** UL, CE, FCC, RoHS, and REACH certified for peace of mind in every build.

## Overview

The Bgears b-Blaster 140x38 PWM fan is a high-performance cooling powerhouse designed for extreme gaming and mining setups. Operating at a blistering 5200 RPM, it delivers an impressive 308 CFM airflow, powered by a durable Japanese 2 ball bearing motor for extended lifespan. Its 4-wire PWM control enables precise speed adjustments, balancing maximum cooling with manageable noise levels. Certified by top global safety standards, this fan is engineered for professionals who demand uncompromising performance and reliability.

## Description

Bgears b-Blaster 140 x 38 mm Black 2 ball bearing high speed high performance fan. Extreme Speed at 5200 RPM with Excellent Airflow of up to 308 CFM. 38mm thickness Frame design for large motor to generate ultimate speed and airflow. Mini 3 pin 3 wires connector with fan speed signal output. Include 4 mounting screws.

Review: This high-speed PWM Fan is a Wonderful BEAST! - This fan is a rugged, high-speed beast. If you're accustomed to the more common, less expensive, modest 140x25mm fans... you'll be in for a shock! These monsters are solid, heavy, and generate tremendous airflow... all very good things! They will figuratively, and literally, blow you away at even moderate speeds. Note that these fans certainly aren't quiet at higher speeds, which is completely normal, and expected. And they do vibrate a bit, which is again perfectly normal. But the airflow they can generate is impressive, to say the least. Given all that, a PWM fan controller is highly recommended: By reducing the speed a bit, you can greatly reduce noise and vibration, while still moving a lot of air. Running this fan at a reduced speed should also lengthen the service life too. The recommended controller is Noctua's NA-FC1, as it's designed to handle four amps... well under this fan's maximum current draw of three amps. https://www.desertcart.com/Noctua-NA-FC1-4-pin-PWM-Controller/dp/B072M2HKSN/ In short, if you're in the market for a fan providing tremendous airflow, in a 140x38mm form factor, this product is highly recommended!
Review: This Blower is Loud! And moves a lot of air. - Beware! I didn't but this for sound reasons, I bought it to move air. And boy does it move air. I dont think I have to dust my PC anymore. It goes on the side of my computer and i have 2 fans in the front, when i turn the fans off in the front , this fans turns the non powered fans in the opposite direction not needing the 2 front fans. This is a PWM fan and in my bios I have it to 35% power. which is just right for air and noise level. At 100% it sounds like a jet engine. you want a fan to move air and dont care about noise? this is the fan. Also this fan will hurt your fingers -find a fan guard. It has a really long cable which is a good thing.

## Features

- 12 VDC Extreme Speed at 5200RPM with Excellent Airflow at 308 CFM
- Japanese 2 Ball Bearing fan for Extended Life and High Performance
- 4 pin 4 lead wire connector PWM with Fan Speed signal output
- 4 Screws included
- Now available in 40, 50, 60 70, 80, 90, 90x38, 120, 120x38 and 140mm
- UL, CE, FCC, RoHS, Reach Certified PWM Fan
- Important Note: If Noise Level is a more crucial issue than Extreme Cooling for your application, then this Fan is not suitable for your application. b-Blaster series and b-BlasterPWM series are designed for applications that require Intensive Cooling, heavy duty, and high performance. To achieve these requirements, it will require faster fan speed and a special fan motor and overall design. Please take note: Higher Speed (RPM) = Higher Airflow for Cooling (CFM) = Higher Noise Level (dBA).
- Why Certifications are needed: Bluegears Inc believes all these certifications are necessary so that our products will perform safely and at the highest level for your applications. Therefore, all b-Blaster series and b-BlasterPWM series fans went through intensive lab tests and are certified by all the top test labs in the world to ensure the product quality, safety, perform at the highest level, and the materials are human and environmentally safe. UL, FCC, CE, RoHS, and REACH Certified.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07FHM5DJZ |
| Air Flow Capacity | 308 Cubic Feet Per Minute |
| Best Sellers Rank | #1,759 in Computer Case Fans |
| Brand | Bluegears |
| Color | Black |
| Compatible Devices | Desktop |
| Cooling Method | Fan |
| Customer Reviews | 4.0 4.0 out of 5 stars (173) |
| Date First Available | July 13, 2018 |
| Global Trade Identification Number | 00853704001831 |
| Item Dimensions LxWxH | 5.5 x 5.5 x 1.5 inches |
| Item Weight | 1 pounds |
| Item model number | b-Blaster 140x38 |
| Manufacturer | Aerocool -- Dropship |
| Material | Lead |
| Maximum Rotational Speed | 5200 RPM |
| Noise Level | 70 Decibels |
| Number of Items | 1 |
| Power Connector Type | 3 pin,4 pin |
| Product Dimensions | 5.51"L x 3.54"W x 1.5"H |
| UPC | 853704001831 |
| Voltage | 12 Volts (DC) |
| Wattage | 33 |

## Product Details

- **Brand:** Bluegears
- **Compatible Devices:** Desktop
- **Cooling Method:** Fan
- **Material:** Lead
- **Maximum Rotational Speed:** 5200 RPM
- **Noise Level:** 70 Decibels
- **Power Connector Type:** 3 pin,4 pin
- **Product Dimensions:** 5.51"L x 3.54"W x 1.5"H
- **Voltage:** 12 Volts (DC)
- **Wattage:** 33

## Images

![Bgears b-Blaster 140x38 (PWM Version) Extreme Cooling Gaming PC & Mining Machine Fan, Hi-Speed 5200RPM w/Airflow of 308 CFM, 2 Ball Bearing Designed for Extended Life & high Performance, 4 Wire Black - Image 1](https://m.media-amazon.com/images/I/510gBhXGomL.jpg)

## Questions & Answers

**Q: Is this fan reversible ?**
A: Turn the fan around.

**Q: What is the PWM voltage range?**
A: Per the product label (refer ro the picture I posted with my review), the specs are:

Starting Voltage (VDC): 7
Operating Voltage (VDC): 9-15

The optimal voltage, however, is likely 12. If you need to adjust the speed, you can use a PWM controller like Noctua's NA-FC1. I have been using that controller with these fans, and it works beautifully.

Does that help?

**Q: Can this fan be run on just the red and black wires?**
A: Yes this can be done but keep in mind that you will not have any software based speed control unless you have a physical controller in the loop.

**Q: What is the minimum PWM duty cycle at which these will run?**
A: I am not sure about the PWM duty cycle as I use this fan in a different setup using a rheostat. The lowest I have run this at so far is at 5.8V which is roughly 48% of the rated voltage.

## Customer Reviews

### ⭐⭐⭐⭐⭐ This high-speed PWM Fan is a Wonderful BEAST!
*by C***N on November 22, 2018*

This fan is a rugged, high-speed beast. If you're accustomed to the more common, less expensive, modest 140x25mm fans... you'll be in for a shock! These monsters are solid, heavy, and generate tremendous airflow... all very good things! They will figuratively, and literally, blow you away at even moderate speeds. Note that these fans certainly aren't quiet at higher speeds, which is completely normal, and expected. And they do vibrate a bit, which is again perfectly normal. But the airflow they can generate is impressive, to say the least. Given all that, a PWM fan controller is highly recommended: By reducing the speed a bit, you can greatly reduce noise and vibration, while still moving a lot of air. Running this fan at a reduced speed should also lengthen the service life too. The recommended controller is Noctua's NA-FC1, as it's designed to handle four amps... well under this fan's maximum current draw of three amps. https://www.amazon.com/Noctua-NA-FC1-4-pin-PWM-Controller/dp/B072M2HKSN/ In short, if you're in the market for a fan providing tremendous airflow, in a 140x38mm form factor, this product is highly recommended!

### ⭐⭐⭐⭐⭐ This Blower is Loud! And moves a lot of air.
*by E***T on May 8, 2021*

Beware! I didn't but this for sound reasons, I bought it to move air. And boy does it move air. I dont think I have to dust my PC anymore. It goes on the side of my computer and i have 2 fans in the front, when i turn the fans off in the front , this fans turns the non powered fans in the opposite direction not needing the 2 front fans. This is a PWM fan and in my bios I have it to 35% power. which is just right for air and noise level. At 100% it sounds like a jet engine. you want a fan to move air and dont care about noise? this is the fan. Also this fan will hurt your fingers -find a fan guard. It has a really long cable which is a good thing.

### ⭐⭐⭐⭐⭐ Blown the f*** out
*by J***. on July 27, 2020*

This fan is the god of PC fans. Any other brand pales in comparison and I guarantee I've had improved performance from both my GPU and CPU after switching from those weenie Noctua NF-A14 Industrial fans. The top review on those made me think they were super powerful or had a ton of airflow. If you need fans that can be quiet when you want to be immersed and powerful/loud only when your at full load, these are it. There are no other options, because either they come with sub-par specs for the price, or the quality is going to be lower. I have no problem with a negative pressure now, because the wind gusting through the case is so violent, there's very little opportunity for dust to get stuck. It's almost just as effective to go into my BIOS, press "f" (to pay respect for the natural disaster about to occur), and max all three of my fans to clear out the whole thing. No disassembly required. If my description so far doesn't deliver the point, let me give you something concrete about my PC. There are two of the 140mm b-Blasters and one 120mm version. The leftover Arctic and Noctua intakes on the front barely count, so I won't even bother to consider them. Each 140mm fan has a maximum of 70 decibels at max speed. On top of that, the 120mm has an additional 45 decibels. Just adding these three numbers gives you over 180 decibels and that's not even considering the CPU fan and two intakes. They are deafening when I max them out, but that never happens during a game and only if I'm running several high profile programs or a benchmark. All that said, these fans can be as quiet as other companies if you set up a fan curve to max them out at 35%. I like the option that if my CPU gets near a critical temperature, these things can rev up and prevent damage or throttling. If these were $10 more than I'd say you could go with another lesser capable brand, but they do almost all the same stuff for the same price. Only real complaints I have is that bgears is totally utilitarian and could do without the ketchup/mustard wires. I'd pay extra for some white ones with white LEDs and the same specs as these. TL;DR - If you want actual airflow and bother to set up a fan profile, get these. Way better than the overpriced Noctuas.

## Frequently Bought Together

- Bgears b-Blaster 140x38 (PWM Version) Extreme Cooling Gaming PC & Mining Machine Fan, Hi-Speed 5200RPM w/Airflow of 308 CFM, 2 Ball Bearing Designed for Extended Life & high Performance, 4 Wire Black
- Noctua NA-FC1, 4-Pin PWM Fan Controller (Black)

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*Product available on Desertcart Poland*
*Store origin: PL*
*Last updated: 2026-02-04*