Since this is a new machine, I would contact @DELL-Cares to assess warranty options.

What are your fans set to?  I can hear a little whirring if the fans are ramped up, but on balanced, performance, and quiet, no sounds at all.

After numerous back and forth messages asking me to try various useless solutions, Dell are now saying that the sound is normal! I find that laughable, and absolulely unacceptable from a customer service perspective. I will persevere with them until I get a resolution to this!

ive got my temp profile on balanced, but the issue isnt the fans. Ive run through diagnostics and have actually switched off the fans to try to isolate the noise, and its clear that the fans arent the cause. The noise is similar (almost identical) to the noise in the video on the reddit link i shared above.. could be from the water cooling system, or even the PSU.

UPDATE: Dell support have come back again and said that the noise is normal..... i dont know what to do. Whats the point of a warranty?? Absolutely useless tech support

I got mine yesterday and whilst not as loud as yours mine makes a strange buzzing noise. I think it's coming from the water cooling system to be honest. I raised a case with Dell yesterday.

Sounds like this: https://www.icloud.com/attachment/?u=https%3A%2F%2Fcvws.icloud-content.com%2FB%2FAUVHfWqBOtgrb8oPFuPIajeBcU1mAQxqwfcL9IJ9ot1ZEpu6xIMuEbvu%2F%24%7Bf%7D%3Fo%3DAqqke26IdZ2ytUyY01wxP7N_-GephbeX9ZiREv_6D1kL%26v%3D1%26x%3D3%26a%3DCAogvSqyWVRRlovHwPjFm_pCELqHLiSy7ri_ktdJ8vpVqjcSehCF5-u_-S8Yhffmk4MwIgEAKgkC6AMA_1xskMZSBIFxTWZaBC4Ru-5qJzG4fkouDp3j2aNonNwHuq-L6KMrfQaZYC3RjAg4WySw9_2OI0eE4XInLsT-uRdMGJJGwYukwf7ppPrkckh0BTTPrMj3ts2EYUjAHZ3LvUm4%26e%3D1650114280%26fl%3D%26r%3D63148874-310F-4B49-9644-22F22B066A21-1%26k%3D%24%7Buk%7D%26ckc%3Dcom.apple.largeattachment%26ckz%3D75B6564D-F11A-4FA3-860B-69048D2CAEC4%26p%3D48%26s%3DAzZblG-cHlDIYcR_tYBnDbkgUk0&uk=AGlauHX6ByLMJTKWS0RmoA&f=IMG_6934.MOV&sz=44265335

Thats the same noise I get as well. It is continuous, and jumps and dips in frequency.

Dell are saying that this is normal. I sent them a number of videos, both close and further away from the PC.

This is their exact response:

"We have received the response from the next level of support team. Upon analyzing the videos they have determined that there are no abnormal noises coming from the computer. There are no hardware changes that can make the computer sound any different since it is working as designed.

We understand this may not be the answer that you were waiting for, but in these cases the specialized team determines what is the procedure to follow."

I think its safe to say that I am unhappy and will not be letting this go that easily

I have the same problem... reveived my R13 yesterday.. the noise is terrible.. if you found any solutions pls let us all know here..

sorry to hear that. Dell are holding their line and saying that the noise is normal. I really dont know what I can do next. Its safe to say that I am extremely dissapointed in Dell customer service

@DELL-Cares 

It definitely sounds like it’s the pump making that noise. Unfortunately, its not something that would bother me at all. It actually sounds quite soothing. I guess I've worked around noisy computers too long in the past 40 yrs, especially working in IBM datacenters.