be quiet! Pure Rock 3 LX CPU Air Cooler | 4 High Performance 6mm Heat Pipes with HDT Technology | 120mm Quiet ARGB PWM Fan | AMD:AM4 AM5/Intel LGA 1700/1150/1151/1200 | Black | BK040
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AI Verdict
This 190W TDP air cooler with 4x 6mm heat pipes and a 120mm ARGB fan is for budget-conscious builders needing quiet cooling for mainstream CPUs.
This cooler is a strong fit for consumer PCs with CPUs up to its 190W TDP, offering quiet operation and ARGB lighting in a compact form factor. However, its cooling capacity is insufficient for top-tier, high-wattage CPUs under extreme loads, where it will lead to thermal throttling.
If you're running a CPU with a TDP exceeding 190W or plan heavy overclocking, look for coolers with 6+ heat pipes or a higher TDP rating (e.g., 250W+).
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Pros
- Offers 190W TDP cooling capacity, suitable for gaming and multimedia systems.
- Features a 120mm ARGB fan with 16 LEDs in the hub, providing customizable lighting.
- Operates quietly, achieving only 31.2dB(A) at maximum fan speed.
- Slim design ensures high RAM and VRM cooler compatibility, allowing limitless memory height.
- Installation is straightforward with a preinstalled mounting bridge and offset mounting for AM5 CPUs.
- Comes with thermal paste pre-applied to the base.
Cons
- Struggles with high-end CPUs, hitting 100°C and throttling an Intel i9 13900K at 283W.
- The fan uses a 3-pin 5V ARGB connector, which might require an adapter for some older motherboards.
- While installation is easy, some users dislike the clip-based fan attachment method.
- Only includes one 120mm fan, limiting potential for push-pull configurations without additional purchase.
Dimension Scores
The 190W TDP is adequate for mainstream CPUs, but it struggles to prevent throttling on high-end processors under heavy load.
It achieves a low maximum noise level of 31.2dB(A), performing 2dB below average at both idle and max load in tests.
Features 4 black 6mm copper heat pipes with HDT technology and an all-black aesthetic, indicating a focus on both performance and appearance.
The single fan simplifies cable routing for its 4-pin PWM and 3-pin 5V ARGB connectors, but no specific cable management features are highlighted.
Best For
- Mainstream gaming PCs with CPUs up to 190W TDP.
- Multimedia and graphics systems needing quiet operation and ARGB aesthetics.
- Compact PC cases where space is limited due to its slim design.
- Builders prioritizing quiet cooling and addressable RGB lighting on a budget.
Not Recommended For
- High-end CPUs like Intel i9 13900K or AMD Ryzen 9 7900X3D under heavy, sustained loads where throttling can occur.
- Overclocking enthusiasts pushing CPU wattage beyond 190W TDP.
- Users who prefer a dual-fan setup for maximum cooling performance.
Watch Out For
- The cooler can cause CPUs like the Intel i9 13900K to reach 100°C and throttle, reducing clock speeds from 5.2 GHz to 4.9 GHz under max load.
- While the fan is quiet, some users find the clip-on fan attachment less secure or convenient than screw-based methods.
- The 5V ARGB connector requires a compatible motherboard header or a separate controller; it's not a standard 12V RGB.
Full Specifications
| ASIN | B0DWZF6VVQ |
| Brand | be quiet! |
| Voltage | 12 Volts |
| Wattage | 190 watts |
| Material | Aluminum |
| Department | All Ages, Unisex |
| Item Weight | 1.83 pounds |
| Noise Level | 31.2 Decibels |
| Manufacturer | be quiet! |
| Cooling Method | Air |
| Number of Items | 1 |
| Item model number | BK040 |
| Compatible Devices | Desktop |
| Product Dimensions | 2.79"L x 4.88"W x 4.72"H |
| Power Connector Type | 4-Pin |
| Maximum Rotational Speed | 2000 RPM |
| Global Trade Identification Number | 04260052192498 |
What Buyers Say
This cooler consistently gets praised for its quiet operation, even when the fan spins at 2000 RPM. Users frequently mention the straightforward installation process, which is a big plus for new builders. The ARGB lighting is a definite draw, adding visual flair without compromising performance. However, if you're running a power-hungry CPU, be aware that it might hit thermal limits and cause throttling under intense workloads.
“Man, this thing is QUIET, like seriously quiet, and the RGB looks sick! But my 13900K still hits 100C in Cinebench, so don't expect miracles for hardcore stuff.”
Common Praise
- Fan runs very quietly, even at maximum speed.
- Installation is quick and easy with the preinstalled mounting bridge.
- ARGB lighting looks vibrant and adds aesthetic value.
- Compact design avoids RAM clearance issues.
- Effective cooling for its 190W TDP rating.
Common Complaints
- Not sufficient for extreme overclocking or very high-TDP CPUs, leading to throttling.
- Some users aren't fond of the fan clip mounting mechanism.
- The 5V ARGB connector might require an adapter for older motherboards without the specific header.
Ownership Tips
- The pre-applied thermal paste is convenient for the first install, but you'll need your own for re-installations.
- The ARGB lighting is bright and evenly distributed, making the frosted fan blades glow nicely.
- The all-black finish integrates seamlessly into most builds.
- The offset mounting for AM5 CPUs genuinely helps with hotspot cooling.
Frequently Asked Questions
What CPU sockets is this cooler compatible with?
It supports a wide range of Intel sockets including LGA 1700, 1150, 1151, 1200, and upcoming 1851, as well as AMD AM4 and AM5 sockets.
Does it come with thermal paste?
Yes, thermal paste is pre-applied to the cooler's base, making installation quicker.
How loud is the fan?
The Light Wings LX 120mm PWM fan is designed for quiet operation, reaching a maximum of 31.2dB(A) at full speed.
Will this cooler block my RAM slots?
No, its slim design is specifically engineered to increase RAM and VRM cooler compatibility, allowing for limitless memory height.
Can I control the RGB lighting?
Yes, the fan features 5V addressable RGB lighting with 16 LEDs that can be controlled via your motherboard's ARGB software or a compatible controller.
Is this cooler suitable for an Intel i9 or AMD Ryzen 9 CPU?
While it can cool some high-end CPUs, it's rated for 190W TDP. For CPUs like the i9 13900K or Ryzen 9 7900X3D, especially under sustained heavy loads, it may lead to thermal throttling.
Buying Guide
When buying a CPU air cooler, you need to match its cooling capacity (TDP) to your processor's heat output. A higher TDP rating means it can dissipate more heat. Also, consider the physical size to ensure it fits your PC case and doesn't interfere with RAM or other components. Fan noise is another big one; 'be quiet!' coolers are known for being, well, quiet.
TDP (Thermal Design Power)
Heat Pipes
Fan Size & RPM
Alternatives
If this cooler's 190W TDP isn't enough, look for air coolers with 6 or more heat pipes, a dual-tower design, or a TDP rating of 250W or higher. If ARGB isn't a priority, you might find similar performance for less.
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