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Noctua NH-D15 G2 LBC, Dual Tower CPU Cooler, Specialised Low Base Convexity Version for AMD AM5/AM4 (Brown)
Noctua

Noctua NH-D15 G2 LBC, Dual Tower CPU Cooler, Specialised Low Base Convexity Version for AMD AM5/AM4 (Brown)

Bottom line: The Noctua NH-D15 G2 LBC ($159.95 on Amazon as of 2026-11-07 13:20 UTC): 8 heatpipes and 20% more fin surface area than the original NH-D15; main trade-off: not recommended for Intel LGA1700, LGA1200 or LGA115x CPUs.

$159.95 on Amazon, checked (price may vary)

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014, focused on GPU performance across gaming, rendering, and local-LLM inference. Synthesises community benchmarks, manufacturer specs, and public forum data into actionable buying guides.

*Price sourced from Amazon.com. Last updated 2026-11-07. Price and availability subject to change.

Pros & Cons

Pros

  • ✓ 8 heatpipes and 20% more fin surface area than the original NH-D15
  • ✓ Low-convexity base makes full contact with flat AM5 and AM4 heatspreaders
  • ✓ No offset mounting needed on AM5 for good contact quality
  • ✓ Twin NF-A14x25r G2 140mm PWM fans, near silent at idle
  • ✓ Offset fins clear the top PCIe x16 slot on most current motherboards

Cons

  • ✗ Not recommended for Intel LGA1700, LGA1200 or LGA115x CPUs
  • ✗ RAM clearance drops to 32mm when both fans are installed
  • ✗ LGA2066 support requires the separately sold NM-i20xx kit
  • ✗ Brown and beige color scheme will not suit every build

Manufacturer description

The Noctua NH-D15 G2 LBC is the second-generation version of Noctua's well-known NH-D15 dual-tower CPU cooler, built for AMD AM5 and AM4 builds. It uses 8 heatpipes and has 20% more fin surface area than the original. Two new NF-A14x25r G2 140mm fans move the air, so you get strong cooling under heavy load and very little noise when the system is idle. LBC stands for Low Base Convexity. This base is shaped for CPUs with relatively flat heatspreaders, such as AM5 and AM4 chips, so it makes good contact on AM5 even without offset mounting. That makes it a strong choice for the Ryzen 9 9950X…

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SpecPicks Verdict

SpecPicks scored Noctua NH-D15 G2 LBC using a rating × review-volume × price-fit model applied to published specs and reviews across the cooling & fans category. Noctua's cooling & 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 cooling & 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

Is the NH-D15 G2 LBC compatible with Intel LGA1700 CPUs?

No. Noctua does not recommend the LBC version for Intel LGA1700, LGA1200 or LGA115x. For those platforms, choose the regular NH-D15 G2 or the NH-D15 G2 HBC (High Base Convexity) version.

What is the difference between the LBC, HBC and regular NH-D15 G2?

The LBC (Low Base Convexity) version has a flatter base for relatively flat CPUs such as AMD AM5 and AM4. The HBC version and the regular NH-D15 G2 are the ones Noctua points to for Intel LGA1700, LGA1200 and LGA115x.

Will it fit tall RAM modules?

With a single fan installed, the offset design gives 59mm of RAM clearance. With both NF-A14x25r G2 fans installed, clearance drops to 32mm. Check your memory height in the Noctua Compatibility Centre before you buy.

Does the NH-D15 G2 LBC block the top PCIe slot?

Its offset design and recessed lower fins clear the top PCIe x16 slot on most current motherboards. Confirm your specific board in the Noctua Compatibility Centre.

Is it a good cooler for the Ryzen 9 9950X?

Yes. Noctua positions the LBC version as a deluxe choice for the Ryzen 9 9950X, 9900X, 9700X and 9600X. Its flat base gets good contact on AM5 without offset mounting, and it uses 8 heatpipes with twin 140mm PWM fans.

Key Features

  • Further improved second generation of the iconic, award-winning NH-D15: Even better quiet cooling performance thanks to 8 heatpipes, 20% more surface area and novel NF-A14x25r G2 fans!
  • Specialised LBC (Low Base Convexity) version for optimal contact quality on relatively flat CPUs such as AMD AM5 (even without offset mounting), AM4 or Intel LGA2066 (optional NM-i20xx kit required), deluxe choice for Ryzen 9950X, 9900X, 9700X, 9600X, etc.
  • Caution: Not recommended for use on Intel LGA1700, LGA1200 or LGA115x! Please choose the regular NH-D15 G2 or the NH-D15 G2 HBC (High Base Convexity) version for these platforms!
  • Two state-of-the-art NF-A14x25r G2 140mm fans with speed-offset for acoustic fine-tuning, Low-Noise Adaptors and PWM for automatic speed control: maximum efficiency under load, near silent at idle!
  • Offset design with recessed lower fins clears top PCIe x16 on most current motherboards and offers 59mm RAM clearance in single fan mode (32mm with both fans, see Noctua Compatibility Centre)

Full Specifications

BrandNoctua
ModelNH-D15G2LBC
Voltage12 Volts
Wattage2.28 watts
MaterialCopper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
Unit Count1.0 Count
Noise Level24.8 Decibels
Part NumberNH-D15G2LBC
Material TypeCopper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating
Cooling MethodAir
Number of Items1
Air Flow Capacity155.6 Cubic Meters Per Hour
Compatible DevicesDesktop
Power Connector Type4-Pin
Maximum Rotational Speed1500 RPM
Item Dimensions L x W x H5.98"L x 5.91"W x 6.61"H

Benchmark data for other processors

Ready to buy?

Noctua NH-D15 G2 LBC, Dual Tower CPU Cooler, Specialised Low Base Convexity Version for AMD AM5/AM4 (Brown) 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.

Buy on Amazon — $159.95

*Price sourced from Amazon.com. Last updated 2026-11-07. Price and availability subject to change.

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Noctua NH-D15 G2 LBC, Dual Tower CPU Cooler, Specialised Low Base Convexity Version for AMD AM5/AM4 (Brown)
$159.95
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