Jump to content
Search In
  • More options...
Find results that contain...
Find results in...
Marco Gomez

Noctua NH-L9i fan compatibility

Recommended Posts

Posted · Original PosterOP

Hello there friends.

 

I just bought a Noctua NH-L9i for my CPU cooling as my computer weight and "build simplicity" concerns me due to the fact that I'll have to transport my build more often than I'd like to. NH-L9i seemed to be a perfect fit, as it is lightweight, low-profile, and the TDP of my chosen CPU is perfectly fine to cool with a NH-L9i (the CPU is an Intel i5 8400, 65W TDP, thus, supported as per Noctua's NH-L9i CPU compatibility list). My case will be a NZXT H400i black, so I don't really need the CPU cooler to be THAT low-profile as NH-L9i grants, the choice was made based on the weight of the cooling solution (as much as my PSU choice, which is a Corsair SF-750, which is as lightweight as possible for a relatively strong power-house).

 

My problem is: as many of you my friends, I HATE Noctua's default color-scheme, as it'll make my build to look like an "ok-looking" build, but with a beige half-BRICK inside right in the middle of it.

 

I may have a solution, but I'll need your knowledge to be more confident on doing it. NH-L9i default fan is an Noctua NF-A9x14 PWM (a 92x92x14mm super low-profile fan, highly optimized to the NH-L9i's heat sink). Painting it is out of the question for me, as my painting skills are bad, and it could destabilize / unbalance the fan (besides the danger of having paint on my fan's bearing.

 

BUT, I have another Noctua's standalone 92mm fan, which is a Noctua NF-B9 redux-1600 PWM. It is nor RGB or fancy, but it's plain gray, so it fit's nice with my build color-scheme. NF-B9 is 92x92x25mm, and NH-L9i comes with 25mm fan mounting screws (so it's is compatible concerning the mounting itself). So my understanding by now is: it will mount... but will it cool properly?

 

My knowledge concerning static pressure vs airflow fan's characteristics fall short to let me know if: can I replace the default Noctua NF-A9x14 PWM fan for my Noctua NF-B9 redux-1600 PWM? They're both 92x92mm, they're both PWM, but I'm afraid of trying to replace and making the cooling solution to fall short on my CPU needs (even it's a low TDP one) due to the lost of it's fan optimization. Do you guys think I can do it? Will the NF-B9 improve my cooling or reduce it? I looked over Noctua's specs for both fans (links provided above), and I couldn't even understand if those two fans are air flow or static pressure, and over some Google searches I couldn't either find any documented case of fan replacement on a NH-L9i. (BTW: I know Noctua is planning to add the NH-L9i fan to their Chromax line (black fans with colored anti-vibration corners), but not soon enough as I need this build ready to go ASAP due to my upcoming relocation.

 

Thank you so much in advance for your thoughts and considerations to help me out. I really appreciate your time.

 

My best regards,

 

Marco Gomez 

Link to post
Share on other sites
17 minutes ago, Marco Gomez said:

My knowledge concerning static pressure vs airflow fan's characteristics fall short to let me know if: can I replace the default Noctua NF-A9x14 PWM fan for my Noctua NF-B9 redux-1600 PWM? They're both 92x92mm, they're both PWM, but I'm afraid of trying to replace and making the cooling solution to fall short on my CPU needs (even it's a low TDP one) due to the lost of it's fan optimization. Do you guys think I can do it? Will the NF-B9 improve my cooling or reduce it?

I think the NF-B9 will work better on the virtue it can push more air than the NF-A9.

 

I don't really think there's much of a point at worrying about fan type, especially for the application of computer cooling.

Link to post
Share on other sites
9 minutes ago, Mira Yurizaki said:

I think the NF-B9 will work better on the virtue it can push more air than the NF-A9.

I don't really think there's much of a point at worrying about fan type, especially for the application of computer cooling.

The NF-A9 performs about the same or worse compared to the stock NF-A9x14 on the NH-L9i. The NF-B9 is worse but should still perform fine.

https://infogram.com/official-sffn-cpu-cooler-chart-1hmr6gyjwkz96nl?live

https://smallformfactor.net/forum/threads/thicker-fan-on-noctua-nh-l9i.6176/

https://www.reddit.com/r/sffpc/comments/92vbqv/s4_mini_with_l9i_heatsink_nfa9x14_vs_nf_b9_redux/


If you ever need help with a build, read the following before posting: http://linustechtips.com/main/topic/3061-build-plan-thread-recommendations-please-read-before-posting/
Also, make sure to quote a post or tag a member when replying or else they won't get a notification that you replied to them.

Link to post
Share on other sites
Posted · Original PosterOP
5 hours ago, WoodenMarker said:

Thank you for an answer with such amount of information. In one of those posts I noticed that a guy tested the cooler with a fan replacement and got about 8°C (46,4 °F) more than using the stock fan with full load. As you consider the NF-B9 capable of performing fine anyway, I'll try to find a Be Quiet option that fits the 92mm mount standard, and if I can't find it, I'll go with the NF-B9.

 

I think you're totally right assuming I'll have no problems with a 65W TDP CPU anyway (I use the PC mostly for JavaScript programming, and most of my job stress my RAM (as per multiple virtual machines) and the GPU (WebGL Shaders), and not directly the CPU, keeping a considerable low load most of the time.

 

Once again, thank you for your time. I appreciate it.

Link to post
Share on other sites

Why not the Cryorig C7?


Workstation Rig:
CPU:  Intel Core i9 9900K @4.8ghz  |~| Cooling: Noctua NH-U12P |~|  MOBO: Asus Z390M ROG Maximus XI GENE |~| RAM: 32gb 3200mhz CL16 G.Skill Trident Z RGB |~| GPU: nVidia Founders Edition RTX 2080 Ti  |~| PSU: Corsair RM850X 80Plus Gold |~| Boot: WD Black M.2 2280 500GB NVMe |~| Storage: 2X4TB HDD 7200rpm Seagate Iron Wolf + 2X2TB SSD SanDisk Ultra |~| Case: Cooler Master Case Pro 3 |~| Display: ASUS ROG Swift PG348Q 3440x1440p100hz |~| OS: Windows 10 Pro.
Personal Use Rig:
CPU: Intel Core i7 8700 @4.45ghz |~| Cooling: Cooler Master Hyper 212X |~| MOBO: Gigabyte Z370M D3H mATX|~| RAM: 16gb DDR4 3333mhzCL16 G.Skill Trident Z |~| GPU: EVGA Founders Edition GTX 1080 Ti |~| PSU: Corsair TX650M 80Plus Gold |~| Boot:  SSD WD Green M.2 2280 240GB |~| Storage: 1x3TB HDD 7200rpm Seagate Barracuda + SanDisk SSD Plus G26 480gb |~| Case: Cooler Master Case Pro 3 |~| Display Setup: Acer X34 3440x1440p100hz |~| OS: Windows 10 Pro.
Link to post
Share on other sites
Posted · Original PosterOP
52 minutes ago, Princess Cadence said:

Why not the Cryorig C7?

Among my possibilities and requirements the C7 was one of the best possibilities (besides the fact that it looks super beautiful IMO), but I got a really good deal on the NH-L9i. I bought from a friend, brand new. He was facing some serious thermal throttling as his brand new build counts with a high TDP CPU which the NH-L9i couldn't handle (one more reason for me to count with you guys to get informed before taking hasty unwise decisions 😆). Now that I have it, I rather keeping it and just try to get rid of the Noctua's color scheme (which I never understood anyway - of course it's a matter of personal preferences, but I never had the opportunity to find a beautiful build with those colors inside).

Link to post
Share on other sites

The B9 redux will work fine, I don't think you'll loose more than a few degrees as compared to the higher speed stock fan. As you already have the B9, I would suggest you simply give it a shot and check the temps.

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×