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Fan-less silent PC

I agree if we talk about noise. In my case I have to avoid airflow as much as possible cause I live 50m from the ocean and the salty air is very bad for electronics.
Good point. I mean, you could buy some plastic spray and apply conformal coating to all components upon installation, but it's a bit tedious as you would basically have to do a full teardown first, with how everything these days is covered with plastic and heatsinks. And I don't think you'd want to get any into the CPU socket or expansion slots either (socket cover + painter's tape FTW, but that's one more step obviously).
 
Good point. I mean, you could buy some plastic spray and apply conformal coating to all components upon installation, but it's a bit tedious as you would basically have to do a full teardown first, with how everything these days is covered with plastic and heatsinks. And I don't think you'd want to get any into the CPU socket or expansion slots either (socket cover + painter's tape FTW, but that's one more step obviously).
I'd go for a sealed case, water cooled with external radiator.
 
This Fractal Design North case is very good-looking, but I was somewhat disappointed with the quality - panels don't align perfectly, thumb screws cannot be screwed in with fingers and require a screwdriver, also they scratch the case, there are no extra screws, no velcro straps, no motherboards standoffs, fans don't have dampeners. It's pretty, but I hoped for better quality, especially after seeing Fractal Torrent which has excellent build quality.

That's a shame. I have the Pop Mini Silent (with the bitumen lined panels) - it has thumbscrews for the panels and i'm pretty sure it came with stand-offs. I can't remember if the fans were damped - I swapped out all the fans, including the 3 on my Peerless Assassin for Noctua fans with corner dampers (i'm a Noctua fan boy :))
 
My fanless HTPC has been running for 3 or 4 years now, I based it on the Ryzen 4750G APU (which was a bit hard to get hold of, it is well night identical to the 5700G that had a full market release)...

I like to run my PC's for as long as possible, 10 years not being unusual, as long as it copes with the work it is given.... and streaming, media (video and audio), along with light gaming have been working well. - Over the longer term I find the issues to be the obvious ones.... fans bring in dust and fans tend to fail over the long term (bearings etc...) - and of course, any moving parts involve noise, and being located right next to my speakers, a prime objective is silence!

The APU has a max thermal rating of 65C... - theoretically 65C dissipation should be enough - but actual testing of the CPU shows that if you really try to stress it, the real heat dissipation is more like 95C.
I also wanted a case that would fit into my components rack and be relatively unobtrusive

So I went for the HDplex H5


The whole side is the same sort of heatsink that muscular Class AB (or A) amps often have... and the entire case is beautifully finished.

8 Heatpipes connect the CPU to the heatsink.

The manufacturer claims a TDP of 125C... personally I have found that it tends to max out at around 85C so perhaps the manufacturer is being a little optimistic! - still the end result is a system that under any normal use, including gaming, keeps the CPU below 65C.

Under normal HTPC uses, the CPU tends to idle along in the high 30C's and low 40C's - depending on room temp
It has 32Gb of RAM, lightly overclocked (to optimise GPU performance - through RAM overclock)

It truly is completely silent, containing an SSD, RAM, CPU, and fanless PSU (the PSU is the HDPlex provided unit bolted to the case for cooling ... so no fan there either).

No concerns about noise, no concerns about dust or longevity. (it was built circa 2021... now 3 years old, and no performance issues encountered at this stage)
 
I am noise allergic, but I think these days you can achieve that easily with a 35W T series Intel CPU, a Noctua fan, and a fan less power supply....
 
I am noise allergic, but I think these days you can achieve that easily with a 35W T series Intel CPU, a Noctua fan, and a fan less power supply....

Imo, what you want is a psu with what is commonly referred to as a "zero rpm mode". Basically the psu monitors power draws and temp and only runs the fan when needed.


imo, you always want at least one fan, because lots of stuff on a pc (besides the cpu and gpu) needs to be to be kept cool. With that being said, the fans that come with most cases are mediocre at best. The best way to pick a fan is to follow a fee of the people who benchmark them.

for example, take a look at the rpm/cfm & rpm/dBA charts in the is review.


Another things that you can do, is change the fan curves in the bios. very few people outside of power users ever seem to do this.
 
Imo, what you want is a psu with what is commonly referred to as a "zero rpm mode". Basically the psu monitors power draws and temp and only runs the fan when needed.


imo, you always want at least one fan, because lots of stuff on a pc (besides the cpu and gpu) needs to be to be kept cool. With that being said, the fans that come with most cases are mediocre at best. The best way to pick a fan is to follow a fee of the people who benchmark them.

for example, take a look at the rpm/cfm & rpm/dBA charts in the is review.


Another things that you can do, is change the fan curves in the bios. very few people outside of power users ever seem to do this.
Taking a long term perspective (3 to 5 years) - unless the unit runs 90%+ of the time in zero rpm mode, the gradual acretion of dust coating internal heatsink fins, will tend to make the system less efficient over time, and will gradually ramp up fan speed (and noise) over time.

I previously experimented widely with "silent" fans, Zero RPM PSU's and bios or external device control of fan curves.... but ultimately that meant heaps of "faffing about", lots of time wasting, and results that were never as good as a properly designed/configured/set up fanless system.

The Inside and outside of my HDplex fanless setup remains pristine... requiring only a cursory external dusting - same as any household furniture.... and the passive convection cooling on the external heatsinks gathers no dust on the fins.

"that's not a heatsink PC case.... THIS is a heatsink PC case":

HDPLEX.H5.Fanless.PC.Chassis.1.jpg
 
Taking a long term perspective (3 to 5 years) - unless the unit runs 90%+ of the time in zero rpm mode, the gradual acretion of dust coating internal heatsink fins, will tend to make the system less efficient over time, and will gradually ramp up fan speed (and noise) over time.

Just like changing the oil in your car, cleaning your computer is something that should be done regularly. How regularly depends on a lot of factors.
 
Just like changing the oil in your car, cleaning your computer is something that should be done regularly. How regularly depends on a lot of factors.
Or... you get a properly configured fanless design, and relegate internal dusting to ancient history....
 
Or... you get a properly configured fanless design, and relegate internal dusting to ancient history....

That only works with a low power machine, and not everyone has a low power machine.

For example, the H5 you referenced only supports cpu's with a tdp of 125W or less. My cpu will happily pull 230W. My gpu will pull 355W, but you need a decent sized case to fit it. I'd also bet the H5 would be uncomfortably warm if you actually pulled 125W for more than a few minutes.
 
My fanless HTPC has been running for 3 or 4 years now, I based it on the Ryzen 4750G APU (which was a bit hard to get hold of, it is well night identical to the 5700G that had a full market release)...

I like to run my PC's for as long as possible, 10 years not being unusual, as long as it copes with the work it is given.... and streaming, media (video and audio), along with light gaming have been working well. - Over the longer term I find the issues to be the obvious ones.... fans bring in dust and fans tend to fail over the long term (bearings etc...) - and of course, any moving parts involve noise, and being located right next to my speakers, a prime objective is silence!

The APU has a max thermal rating of 65C... - theoretically 65C dissipation should be enough - but actual testing of the CPU shows that if you really try to stress it, the real heat dissipation is more like 95C.
I also wanted a case that would fit into my components rack and be relatively unobtrusive

So I went for the HDplex H5


The whole side is the same sort of heatsink that muscular Class AB (or A) amps often have... and the entire case is beautifully finished.

8 Heatpipes connect the CPU to the heatsink.

The manufacturer claims a TDP of 125C... personally I have found that it tends to max out at around 85C so perhaps the manufacturer is being a little optimistic! - still the end result is a system that under any normal use, including gaming, keeps the CPU below 65C.

Under normal HTPC uses, the CPU tends to idle along in the high 30C's and low 40C's - depending on room temp
It has 32Gb of RAM, lightly overclocked (to optimise GPU performance - through RAM overclock)

It truly is completely silent, containing an SSD, RAM, CPU, and fanless PSU (the PSU is the HDPlex provided unit bolted to the case for cooling ... so no fan there either).

No concerns about noise, no concerns about dust or longevity. (it was built circa 2021... now 3 years old, and no performance issues encountered at this stage)
Same here but with i9-12900K.
 
That only works with a low power machine, and not everyone has a low power machine.

For example, the H5 you referenced only supports cpu's with a tdp of 125W or less. My cpu will happily pull 230W. My gpu will pull 355W, but you need a decent sized case to fit it. I'd also bet the H5 would be uncomfortably warm if you actually pulled 125W for more than a few minutes.
It does depend on your workload requirements...

Like I said... to run plex, VLC, netflix, and MediaMonkey, etc... - this is perfect.

It also happily runs all the games I and my 11yo son choose to play.

The case never gets more warm ... and with the default heatpipe setup, It dissipates up to 89W which is the max I have managed with my APU (which has a TDP of 65W in theory)...

The APU is connected via 8 heatpipes to one side of the case only - so the heatsink on the other side is unused. If I wanted higher performance, I could fit a GPU and connect it with a seperate set of heatpipes to the other side - allowing the radiation of a further 100W or so.
 
I like to run my PC's for as long as possible, 10 years not being unusual
My silent i7 is almost 12 years old, still my primary PC. I'd prefer a PC that's silent nearly all the time, but with fans that spin up only under heavy load, for stability, which these days is almost never.
 
Imo, what you want is a psu with what is commonly referred to as a "zero rpm mode". Basically the psu monitors power draws and temp and only runs the fan when needed.
Why a fan if you can go fanless? :)


imo, you always want at least one fan, because lots of stuff on a pc (besides the cpu and gpu) needs to be to be kept cool. With that being said, the fans that come with most cases are mediocre at best. The best way to pick a fan is to follow a fee of the people who benchmark them.
Using a 35W i7, you can get zero noise if you use a large Noctua CPU fan. The only fan in my system, and nothing ever gets hot or noisy in any way even when I do some video work (semi-pro stuff, though, not the most demanding 4k jobs).

I tend to be "inspired" to get components based on what these guys do: https://silentpc.com/value-pcs/cube-computer
 
I was interested in building a silent PC for quite a while but still wanted something with the power to do other demanding
chores without issues. In the end I decided to just build something (normal) and see how it worked out. I used my old CoolerMaster Cosmos
full tower case I've had like 20 years (I love this huge case!) It has great sound proofing on both side panels to tame a lot of any noise.
I was a bit worried about the new video card I bought being loud but it isn't, at least under a normal work load.
I put Noctua quieting resistors on the cpu and the one Noctua rear exhaust case fan.
I'm sitting at my desk right now with the computer about 12" from my head and I can't hear any noise at all. The only time I hear anything is during Post booting when the MB ramps everything up for about 30 seconds or on the rare occasion I've been doing some demanding chore.
CPU temp stays at around 89 F which is only slightly above the 81 F room temp.
GPU runs a bit hot at 116 F but that seems to be it's norm?

Intel 7 Alder Lake Processor Base Power: 125W
ASUS Prime Z690-A LGA 1700(Intel®12th&13th) ATX motherboard
Seasonic FOCUS GM-850, 850W 80+ Gold, Semi-Modular, ATX Form Factor, Low Noise
DeepCool AK500 High-Performance CPU Cooler, 120mm FDB PWM Fan, 240W
CORSAIR Vengeance 64GB (4 x 16GB) DDR5 5600 (PC5 44800) Desktop Memory
GTX 1060 6GB 192Bit GDDR5 GPU Video Card
Noctua NF-F12 PWM, Premium Quiet Fan,
8 TB SSD storage.

Case.JPG

IMG_0058.JPG

IMG_0071.JPG
 
I was a bit worried about the new video card I bought being loud but it isn't, at least under a normal work load.
GPU runs a bit hot at 116 F but that seems to be it's norm?
I'm not sure about the GTX1060 as it is a bit dated but the new cards have a power save feature when they are doing simple desktop stuff. The fan stops completely and engages when being worked. Why 64 GB of RAM?
 
I'm not sure about the GTX1060 as it is a bit dated
Dated, ouch it's only about 2 years old. :eek: LOL
At the time I was looking with something with enough muscle to stream 4k video over HDMI but didn't need a
really high powered card, not a gamer at all. I was able to grab this guy for like $130 and it has filled my needs.
I was really out of the loop at the time and pretty ignorant on the video card market, still am. Hoping this build will
take me to the end of the line.

"Why 64 GB of RAM?"
It was cheap.
 
Dated, ouch it's only about 2 years old. :eek: LOL
At the time I was looking with something with enough muscle to stream 4k video over HDMI but didn't need a
really high powered card, not a gamer at all. I was able to grab this guy for like $130 and it has filled my needs.
I was really out of the loop at the time and pretty ignorant on the video card market, still am. Hoping this build will
take me to the end of the line.

"Why 64 GB of RAM?"
It was cheap.
GTX1060 Release Date July 19th, 2016.
Lots of RAM for cheap is always good...LoL.
 
Dated, ouch it's only about 2 years old. :eek: LOL
At the time I was looking with something with enough muscle to stream 4k video over HDMI but didn't need a
really high powered card, not a gamer at all. I was able to grab this guy for like $130 and it has filled my needs.
I was really out of the loop at the time and pretty ignorant on the video card market, still am. Hoping this build will
take me to the end of the line.

"Why 64 GB of RAM?"
It was cheap.
Integrated graphics in Intel i CPUs (even older ones) have no problem with 4k streaming. Video production @4k may be somewhat slow though.

Here's my corporate issued computer running a Youtube 4k test @60Hz (normally it'd read 12% average GPU utilization or so though). Incidentally also shows why I'd rather have 64GB on my own build. :)

1728933282788.png
 
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Integrated graphics in Intel i CPUs (even older ones) have no problem with 4k streaming.
I didn't trust high demand integrated not to crash when running other demanding programs at the same time.
But I really wasn't up to speed on modern hardware. I hadn't looking into things since my last build 2008.
Too lazy to do a bunch of homework. LOL
 
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