Noctua’s DX line CPU coolers have become a default choice in premium grade quiet cooling solutions for Intel Xeon processors. The NH-U12S DX-3647 features a larger, custom-designed contact surface and supports both square and narrow type LGA3647 platforms. Based on the proven, 120mm size NH-U12S heatsink and equipped with two of Noctua’s award-winning, PWM controlled NF-A12x25 120mm fans, it provides an excellent balance of performance, compatibility and quietness of operation. Topped off with the professional SecuFirm2 mounting system and pre-applied NT-H1 thermal compound, the NH-U12S DX-3647 forms a complete premium quality package for quietly cooling LGA3647 based Xeon workstations and servers.
Noctua’s DX line CPU coolers have become a default choice in premium grade quiet cooling solutions for Intel Xeon processors. The NH-U12S DX-3647 features a larger, custom-designed contact surface and supports both square and narrow type LGA3647 platforms. Based on the proven, 120mm size NH-U12S heatsink and equipped with two of Noctua’s award-winning, PWM controlled NF-A12x25 120mm fans, it provides an excellent balance of performance, compatibility and quietness of operation. Topped off with the professional SecuFirm2 mounting system and pre-applied NT-H1 thermal compound, the NH-U12S DX-3647 forms a complete premium quality package for quietly cooling LGA3647 based Xeon workstations and servers.
in 2 offers
The lowest price for Noctua NH-U12S DX-3647 CPU Cooler right now is $265.10 at Newegg, compared across 2 retailers.
The all-time low was $189.00 on 9 Oct 2023 — today's price is 40% above the lowest ever. It has been notably cheaper before — worth setting a price alert.
Prices last updated 20 Oct 2026.
Noctua NH-U12S DX-3647 CPU Cooler
Noctua’s DX line CPU coolers have become a default choice in premium grade quiet cooling solutions for Intel Xeon processors. The NH-U12S DX-3647 features a larger, custom-designed contact surface and supports both square and narrow type LGA3647 platforms. Based on the proven, 120mm size NH-U12S heatsink and equipped with two of Noctua’s award-winning, PWM controlled NF-A12x25 120mm fans, it provides an excellent balance of performance, compatibility and quietness of operation. Topped off with the professional SecuFirm2 mounting system and pre-applied NT-H1 thermal compound, the NH-U12S DX-3647 forms a complete premium quality package for quietly cooling LGA3647 based Xeon workstations and servers.
Noctua’s DX line CPU coolers have become a default choice in premium grade quiet cooling solutions for Intel Xeon processors. The NH-U12S DX-3647 features a larger, custom-designed contact surface and supports both square and narrow type LGA3647 platforms. Based on the proven, 120mm size NH-U12S heatsink and equipped with two of Noctua’s award-winning, PWM controlled NF-A12x25 120mm fans, it provides an excellent balance of performance, compatibility and quietness of operation. Topped off with the professional SecuFirm2 mounting system and pre-applied NT-H1 thermal compound, the NH-U12S DX-3647 forms a complete premium quality package for quietly cooling LGA3647 based Xeon workstations and servers.
Last updated at 20/10/2026 04:40:34
Noctua NH-U12S DX-3647, Premium CPU Cooler for Intel Xeon LGA3647 (120mm, Brown)
Noctua NH-U12S-DX-3647 - CPU Cooler
Delivery $94.26
originally posted on pccasegear.com
A great solution for a Xeon based workstation. Conventional server solutions are too noisy (small diameter and high RPM, because they are limited with server cases geometry). I use it with Xeon 8256 Platinum and very happy.
| Fan Size | 120mm |
| CPU Socket Compatibility | Intel LGA 3647 |
| Bearing Type | SSO2 |
| Air Flow | 102,1 m³/h |
| Noise Level | 22,6 dB(A) |
Noctua NH-U12S DX-3647, Premium CPU Cooler for Intel Xeon LGA3647 (120mm, Brown)
Noctua NH-U12S-DX-3647 - CPU Cooler
Delivery $94.26
A great solution for a Xeon based workstation. Conventional server solutions are too noisy (small diameter and high RPM, because they are limited with server cases geometry). I use it with Xeon 8256 Platinum and very happy.
| Fan Size | 120mm |
| CPU Socket Compatibility | Intel LGA 3647 |
| Bearing Type | SSO2 |
| Air Flow | 102,1 m³/h |
| Noise Level | 22,6 dB(A) |
