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Description
Be Quiet! BK021 Dark Rock 4 Heatsink & Fan, Intel & AMD Sockets, Silent Wings Fan, Fluid Dynamic, 200W TDPDark Rock 4 offers an extreme cooling performance of 200W TDP and virtually inaudible operation. Perfect for overclocked systems and demanding workstations. Virtually inaudible Silent Wings 135mm PWM fan Achieves only 21. 4dB(A) at maximum fan speed Six high performance copper heat pipes Airflow optimized, wave contoured cooling fins Easily installable black installation kit can be mounted from above Supports an additional 120mm fan; clips are
Dark Rock 4 offers an extreme cooling performance of 200W TDP and virtually inaudible operation. Perfect for overclocked systems and demanding workstations.
- Virtually inaudible Silent Wings 135mm PWM fan
- Achieves only 21.4dB(A) at maximum fan speed
- Six high-performance copper heat pipes
- Airflow-optimized, wave-contoured cooling fins
- Easily installable black installation kit can be mounted from above
- Supports an additional 120mm fan; clips are included in scope of delivery
- Brushed aluminum top cover with diamond cut finish
- 3-year manufacturer’s warranty
- German product conception, design and quality control
Virtually Inaudible Operation
Even at 100% PWM fan speed noise is an insignificant 21.4dB(A)
The Silent Wings 135mm PWM fan features nine airflow-optimized fan blades, a six-pole motor for less vibration and a durable fluid-dynamic bearing. Decoupled fan mounting with vibration-isolating elements on the heat sink.
Extreme Cooling Power
Achieving an incredible performance-to-noise ratio
No compromise in silence and performance for overclocked systems and demanding graphics applications! Dark Rock 4 provides an impressive rating of 200W TDP and achieves low temperatures even during periods of peak CPU performance.
Highly Advanced Design
The core features that result in high-end cooling
Dark Rock 4 is equipped with six advanced technology 6mm copper heat pipes that maximize the heat conductance. Airflow-optimized, wave-contoured cooling fins with small dots on their surfaces increase the air circulation. The special black coating with ceramic particles makes a perfect transfer of heat possible.
Single-Tower Layout
Powerful cooling for your components
The compact single-tower design achieves excellent heat dissipation in small spaces. One fan is pre-installed. It is also possible to add another 120mm fan for even better cooling.
User-Friendly Elegance
Stylish and easy to install
The mounting kit for the Dark Rock 4 cooler is completely black, perfectly matching the black design of the cooler itself. You can conveniently install the cooler on the motherboard from above. The brushed aluminum top cover with its diamond cut finish adds a touch of elegance to this high-end cooler.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.7 ★★★★★
Based on 7 reviews
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Product Reviews
★★★★★ 5
Great jeans
Size: 44W x 29L, Color: Black
Great jeans that look like you dressed up. Fit well and the color is a true black.
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Reviewed in the United States on May 17, 2026
★★★★★ 4
Great jeans
Size: 36W x 29L, Color: Dark Stonewash
Great jeans great fit
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Fits to size. Nice quality. Heavy denim
Size: 33W x 32L, Color: Dark Stonewash
My husband lives his jeans. Perfect fit
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Reviewed in the United States on June 11, 2026
★★★★★ 5
Honest value for money!
Size: 46W x 30L, Color: Black
I bought these pants (46 X 30 in black) figuring that they would probably be so-so like everything else that seems to be made for people that aren't "perfectly shaped."
I'm VERY happy to report that I was wro...wroooo....um...less right than usual. ;-) (Obviously, I'm a guy.) Anyway, they fit well, feel quite comfortable, including plenty of room up front for sitting for too long, driving etc. No binding nor need to adjust. TMI? Nope...that's kinda important to us fellas.
Perhaps I just happen to be the right sort of fat, but these jeans fit better than any other (Seriously! I'm 54 and this is really true!) pair of non-tailored pants that I've ever purchased. This includes purchases I've made in stores that I've tried on the item. These still fit better than those. Yep. That would be part of, "Any."
I will be buying more and would encourage you to seriously consider these jeans. I don't work for them, they have never contacted me, except by sending what I ordered, nor am I in any way benefitting by writing a review. I don't usually write a review, but this actually moved me to want to speak up about a product/seller that shows what honest, ethical and attention to detail/customer needs and feedback.
In closing, one must ask the obvious question after reading all of this. That question is: "Do penguins have knees?" Whilst you ponder that, just think about how good those jeans are going to look on you. A coupla days later they're going to look great in the window of the laundry machine (front load) at the laundromat and again when you put them in the dryer. Other people are just going to sob quietly about how icky their clothes look when compared to yours. Okay. The fact of the matter is that, yes, penguins do have knees. Now that you know that, I'm sure you'll rest much better and probably get better fuel mileage. Of course, that may not be true.
I hope you've at least taken away from this little novel, that I'm very happy with the product and will absolutely be buying more in the near future. The rest of the silliness is just there to, hopefully, bring a little smile/sunshine into your day/night and I sincerely believe that it will be passed on from you to others, thus we can all spread a bit of happiness in a world that is in dire need of more love and less hate.
~peace to all
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Reviewed in the United States on November 3, 2018
★★★★★ 5
Good fit. Good quality.
Size: 40W x 28L, Color: Vintage Stonewash
Good fit. Good quality.
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Reviewed in the United States on June 8, 2026