Different sockets. You need the proper socket kit for am5. Oops, I forgot AMD kept backwards compatibility going from AM4 to AM5, so "technically" it should work. https://noctua.at/en/noctua-confirms-am5-heatsink-compatibility-and-announces-free-of-charge-upgrades-for-low-profile-coolers-and-older-heatsink-models Answer from SnooAdvice7540 on reddit.com
🌐
Reddit
reddit.com › r/noctua › noctua nh-u12a with ryzen 7000
r/Noctua on Reddit: Noctua NH-U12A with Ryzen 7000
September 28, 2022 - ... I was going through the same decision. I do have a torrent fractal case though, so the airflow in general is really good which I think helps. ... All their AM4 mountings are compatible with AM5 sockets.
🌐
Amazon
amazon.com › NOCTUA-NH-U12A-Ventilateurs-NF-A12x25-performants › dp › B07PN4RDW3
Amazon.com: Noctua NH-U12A, Premium CPU Cooler with High-Performance Quiet NF-A12x25 PWM Fans (120mm, Brown) : Electronics
Due to its asymmetric design, the NH-U12A does not overhang the RAM slots on Intel LGA1851/LGA1700/LGA1200/LGA115x and AMD AM4/AM5 based motherboards, which ensures easy access to the modules and 100% compatibility with DIMMs that feature tall heat-spreaders.
🌐
AeroCooler
aerocooler.com › noctua-nh-u12a-intel-lga1700-amd-am4-am5-premium-cpu-cooler
Noctua NH-U12A Intel LGA1700 AMD AM4/AM5 Premium CPU Cooler
Noctua NH-U12A Intel LGA1700 AMD AM4/AM5 Premium CPU Cooler
Socket compatibility ·   · Intel LGA1851, LGA1700, LGA1200, LGA1156, LGA1155, LGA1151, LGA1150 and AMD AM5, AM4(Current socket compatibility applies to all coolers purchased since Q4 2021. For older coolers, please refer to this chart.) · Height (without fan) · 158 mm · Width (without fan) · 125 mm · Depth (without fan) · 58 mm · Weight (without fan) · 760 g · Height (with fan) · Width (with fan) · Depth (with fan) · 112 mm · Weight (with fan) · 1220 g · Material · Copper (base and heat-pipes), aluminium (cooling fins), soldered joints & nickel plating · Fan compatibility · 120x120x25 · Scope
Price   $159.99
🌐
Noctua
noctua.at › en › nh-u12a
NH-U12A | Noctua
Due to its asymmetric design, the NH-U12A does not overhang the RAM slots on Intel LGA1851 / LGA1700 / LGA1200 / LGA115x and AMD AM4 / AM5 based motherboards, which ensures easy access to the modules and 100% compatibility with DIMMs that feature ...
🌐
Noctua
noctua.at › en › products › nh-u12a › features
NH-U12A: Features | Noctua
The NH-U12A includes Noctua’s offset mounting bars for AM5 that make it possible to install the cooler shifted towards the south side of the socket by 7mm, thereby achieving better contact quality right above the CCD(s).
Find elsewhere
🌐
Noctua
noctua.at › en › products › nh-u12a › downloads
NH-U12A: Downloads | Noctua
This video shows how to install Noctua multi-socket CPU coolers on AMD's AM5/AM4 platforms, using the AMD offset mounting bars (NM-AMB12, NM-AMB13, NM-AMB14, NM-AMB15). This video shows how to install Noctua multi-socket CPU coolers on Intel’s LGA1200 & LGA115x (LGA1150, LGA1151, LGA1155, LGA1156) platforms, using the NH-U12A heatsink as an example.
🌐
Reddit
reddit.com › r/buildapc › noctua nh- u12s am4 cooler on am5 motherboard. has anyone dine it ?
r/buildapc on Reddit: Noctua Nh- u12s am4 cooler on am5 motherboard. Has anyone dine it ?
November 25, 2024 -

Hi everyone,

We’re currently working on setting up a build with the ASRock B650 Steel Legend WiFi motherboard and an AMD Ryzen 5 7600X (AM5 socket). However, we’ve run into a potential issue with mounting our CPU cooler.

We’re using the Noctua NH-U12S, which is currently mounted using the AM4 bracket. The cooler aligns and fits fine with the existing setup. However, the AM4 bracket is resting very close to, or directly over, the capacitors near the CPU socket. While it appears stable, we’re concerned this could cause issues in the long run, particularly with electrical interference or not a guarantee for proper cpu contact.

We’ve noticed that Noctua has specific AM5 mounting kits available for their coolers. Our question is: should we replace the AM4 mounting bracket with the dedicated AM5 kit to ensure proper clearance and compatibility, or is it safe to continue using the AM4 bracket as it is?

Any advice or insights would be greatly appreciated. Thanks in advance!

UPDATE: PC ran perfectly and it was fine, tested in gaming as well ! Expo ran great, boot times are same as on AM4. I can recommend this motherboard for sure ! Overall the parts I am using. If anyone is curious just post a comment in this topic asking me about the parts.

🌐
Tom's Hardware
tomshardware.com › pc components › cooling
Noctua NH-U12A Cooler Package Boasts of LGA1851 Compatibility | Tom's Hardware
September 1, 2023 - Noctua’s packaging mentions socket ... with the newest sockets first. So, the Noctua NH-U12A is listed as compatible with the “AM5, AM4” sockets for AMD....
🌐
Reddit
reddit.com › r/noctua › nh-u12a requiers a lot of force to screw onto am5 motherboard.
r/Noctua on Reddit: NH-U12A requiers a lot of force to screw onto AM5 motherboard.
February 24, 2025 -

Hello there, sometime ago (late 2024) I bought this cooler in black and when I tried to screw it onto the motherboard with the -7mm offset mount position I noticed it was very hard to latch the screws on the cooler to the mount on the MB. I did manage to get it on but I feel like it is putting a lot more pressure on the CPU than my old NH-D15 I had on my AM4 system which screwed in normally.

I'm using a contact frame from Thermalright for AM5 and I checked if the CPU (98X3D) was sticking out of it and it is. I did check the manual if I had everything installed corectly and I'm pretty certain I did it right, though I noticed the screws that go into the backplate are sticking out pretty far in the back.

I don't want to jinx it but it runs fine so far. I'm just slightly concerned about it, it's not my first PC but I thought I'd rather ask.

🌐
Reddit
reddit.com › r › Noctua › comments › 1i2sg9g › nhu12a_for_am5
NH-U12A per AM5 : r/Noctua
January 16, 2025 - Quindi ho comprato un NH-U12A usato, aperto, per 35 dollari, ma non sono sicuro che l'hardware incluso sia compatibile con AM5.
🌐
Noctua
noctua.at › en › products › nh-u12s › downloads
NH-U12S: Downloads | Noctua
This video shows how to install Noctua multi-socket CPU coolers on AMD's AM5/AM4 platforms, using the AMD offset mounting bars (NM-AMB12, NM-AMB13, NM-AMB14, NM-AMB15). This video shows how to install Noctua multi-socket CPU coolers on Intel’s LGA1200 & LGA115x (LGA1150, LGA1151, LGA1155, LGA1156) platforms, using the NH-U12A heatsink as an example.
🌐
Noctua
noctua.at › pub › media › blfa_files › manual › noctua_nh_u12a_manual_en_web_3.pdf
Installation manuals and videos | Noctua
Find video tutorials and PDF manuals that guide you through the installation process of Noctua CPU coolers, fans and other products.
🌐
Noctua
noctua.at › en › products › nh-u12a-chromax-black
NH-U12A chromax.black | Noctua
Due to its asymmetric design, the NH-U12A does not overhang the RAM slots on Intel LGA1851 / LGA1700 / LGA1200 / LGA115x and AMD AM4 / AM5 based motherboards, which ensures easy access to the modules and 100% compatibility with DIMMs that feature ...