OPTIMO_ATX - truly linear ATX power supply

[StreamFidelity]

4 hours ago, Marcin_gps said:

In most computers with 35W TDP processor you can disconnect CPU cable and computer will run just fine.

 

In my experience, the SQ only increases significantly when the CPU is supplied with power directly. I reported here:

On 5/1/2020 at 12:25 PM, StreamFidelity said:

4. Test fis audio cable computer and DC complete with 2 Keces P8 (20V / 8A & 12V / 8A)

 

We removed for this wiring
- 3.2 CPU EPS 8 PIN
and added a second fis audio cable instead
- DC Output 12V Male DC (2.5x5.5mm) --- Molex 8 PIN

 

The circuit diagram shows the connections.

 

 

Me: a little more of everything, more space

Bernd: more space, more dynamics, more pulse speed, more resolution, very good voice.

 

I suspect it is because of the bypassing of the 400W HDPLEX DC / ATX converter. This would no longer be necessary with the Optimo ATX. I am very interested. 👍

[StreamFidelity]

8 hours ago, Audio_fiend said:

If the Optimo S ATX is designed for 95W TDP processors, does that mean it's not compatible with the new Intel Alder Lake i9-12900K chips (125W TDP)? Or would it work, but be slightly under powered?

TDP (Thermal Design Power) is the maximum thermal power dissipation generated by a chip (like a CPU) based on which a cooling solution is designed. Important: This is a nominal value. The actual power dissipation may be higher or lower. 

 

If you buy a high-quality JCAT OPTOMO S ATX LPS, you should use passive cooling in my opinion. It follows that the Turbo performance must remain well below 5GHz per core, otherwise there is a risk of overheating. I therefore limit the clock rate to 4.40GHz. This works very well with the HQPlayer (PCM to 1024DSD conversion), for example. 

 

8 hours ago, Audio_fiend said:

If the 12V 23A rail is for the CPU EPS and has only one 8pin connection from the power supply, what do you do if your motherboard has 2x 8pin EPS CPU connections? Just connect one?

That is also my point of criticism. I would like to connect two Molex CPU EPS with 12V, which would be possible. Of course one connector is enough, but the current is better distributed on the motherboard if two Molex 8 PIN can be connected. Maybe @Marcin_gps can say something about this. 

 

8 hours ago, Audio_fiend said:

Exactly how many Volts/Amps is going to the ATX connection? Is the 5V 20A rail for the ATX? 

Look at the ATX power specification. They are 3.3V, 5V and 12V.

 

8 hours ago, Audio_fiend said:

How much power should be fed to a typical Z690 motherboard through its ATX?

The OPTIMO S ATX only got hand-warm with this core load of an i9-12900K CPU. It sounds great.