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Passive CPU Cooling - High Power CPU


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On 1/29/2021 at 10:36 PM, rossb said:

 

I'm far from being an objectivist, but I think a lot of these statements are articles of faith more than anything else.

 

I have an extremely resolving high end headphone setup - An Nagra HD DAC/Classic PSU, EAR HP4 and Niimbus US4 headphone amps and Audeze LCD4 headphones (amonst others).

 

I have tried completely fanless audiophile servers run on linear power supplies - an Antipodes DX3, for example - and found that my high end gaming PC with its i9 processor and about 12 fans connected to the motherboard and ATX PSU sounded better.  This is consistent with my experience in general that higher powered PCs sound better than lower powered ones, even where the high powered PC is run with a conventional switching PSU. In fact, I once built a mid range server with an i5 processor and an HD Plex linear PSU, and it sounded much worse with the linear PSU than with a conventional ATX power supply.

 

So my experience is that having a very high powered PC which necessarily requires fans to run at acceptable temperatures, even with a conventional switching power supply, sounds considerably better than a lower powered fanless one. I have built and used PCs with fans and without fans. The processing power of the CPU in my experience has a far bigger impact on sound quality than a few fans.

 

Agree completely,

 

I have seen on PFM that you use now an OpticalRendu connected to your DAC.

Now the OpticalRendu is some sort of a very low powered PC.

How does it fit to your experience that a higher powered PC does sound better?

Thanks

 

Matt

"I want to know why the musicians are on stage, not where". (John Farlowe)

 

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13 hours ago, rossb said:

A lower powered purpose built streamer such as an ultrarendu or optical rendu powered by a linear PSU and streaming from a high powered PC is the optimal combination.

 

In the case of a Taiko Extreme a DAC connected via USB to the Extreme did sound superior to connected to an OpticalRendu which was connected via network to the Extreme.

 

So I am curious in your experience did adding an OpticalRendu to a good sounding high powered server give really a superior SQ than the server alone (with the same DAC connected via USB)?

 

Thanks

 

Matt

"I want to know why the musicians are on stage, not where". (John Farlowe)

 

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8 minutes ago, rossb said:

But in my case, adding an Optical Rendu (or even an Ultrarendu) gave superior sound quality compared to the same server connected directly to the DAC via USB (with the USB card powered by a linear PSU). The difference was small, but definitely noticeable. I did this comparison quite recently, which is why I ended up with my current set up.

 

May I ask which power supply do you use for your OpticalRendu?

Thanks

 

Matt

"I want to know why the musicians are on stage, not where". (John Farlowe)

 

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