The RTX 4090 FE’s Axial Fans Are Also Great at Cooling CPUs
Have you ever ever puzzled how the axial followers on the Nvidia GeForce RTX 4090 or GeForce RTX 4080 Founders Version carry out exterior of the graphics card? A DIY fanatic Chipell forums (opens in new tab) (through as a (opens in new tab)) has the reply for redesigning the axial fan of the highest two graphics playing cards for a top-down CPU cooler and sharing the outcomes.
The axial cooling fan apparently stored the discussion board member Core i5-13600KF’s working temperature 9 and 5 levels Celsius decrease, respectively, than the Thermalright TL-C12 and Cooler Grasp Mobius 120P ARGB throughout Cinebench R23 benchmarking. Additionally, the noise stage is reported to be decrease than different followers throughout regular operation. Nonetheless, the axial fan made a buzzing noise at very low revs, making it extra audible than the opposite 120mm and 90mm followers it examined.
Nvidia makes use of a mix of Nidec’s AD4A31K04 and AD4A31K05 cooling followers for the corporate’s GeForce RTX 40 sequence (Ada Lovelace) Founders Editions graphics playing cards. Nidec Servo, a subsidiary of the Japanese producer, rose to fame in 2009 when it developed the well-known Light Hurricane followers. With such a distinguished observe report, it is simple to know why Nvidia selected Nidec to supply an lively cooling resolution for its Founders Version merchandise.
The AD4A31K04 and AD4A31K05 are comparable in essence, however there’s a distinction within the airflow course. Notice that Nvidia makes use of a dual-axis fan design to push air in numerous instructions. Distributors have labeled the followers as Sort A and Sort B. The primary pushes the air in entrance of the wings, whereas the second directs the air downwards into the engine.
Followers are normally $ 20 (opens in new tab) On Chinese language on-line platforms like AliExpress or Taobao. Nonetheless, merchants within the latter promote followers cheaper $1.50 (opens in new tab) – I’m not kidding. The ridiculously low price ticket permits DIY customers to experiment with the AD4A31K04 and AD4A31K05 past the product’s unique scope of use.
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The issue is that Nidec has tailor-made their cooling followers to Nvidia’s specs. They don’t include a typical 120mm design; due to this fact the mounting holes are completely different. Additionally, the AD4A31K04 and AD4A31K05 aren’t even 120mm cooling followers. In line with a Taobao service provider, they measure 115 x 115 x 12.5mm, so DIYers need to 3D print their very own brackets out of plastic or another sort of fabric. As one other Chipell discussion board it is a problem user (opens in new tab) He acknowledged that the diameter of the fan is 116m and there may be about 2mm of reserved house. In consequence, the thickness of the body is restricted to 1 mm.
Since Nidec would not record the AD4A31K04 or AD4A31K05 on the corporate’s web site, we have gathered specs from numerous Chinese language distributors out there. The bottom of the fan is made from steel and the casing of the motor is made from aluminum alloy. The utmost pace of the fan is 3,300 RPM and may draw as much as 0.63 A. Nonetheless, a owner (opens in new tab) claims that some samples can attain 3,500 RPM. In any case, the AD4A31K04 and AD4A31K05 are very quick spinning followers.
There is a vital energy draw although. The Cooler Grasp Mobius 120P ARGB has all disco lights and is rated 0.48A with the AD4A31K04 and AD4A31K05 as much as 31% increased. This is not a giant deal as conventional 4-pin fan connectors are appropriate for as much as 1A.
The AD4A31K04 or AD4A31K05 is powered by a particular ribbon cable with a six-pin structure. Whereas the followers join on to Nvidia’s PCB, they require a particular 4-pin adapter to connect with a typical fan connector on the motherboard.
Given the overall price and complexity of modding the axial fan, it is in all probability extra handy to purchase a premium cooling fan to your CPU cooler, AIO liquid cooler, or case. Nonetheless, it is all the time nice to see DIYers pondering exterior the field.
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