Posted 07 February 2019 - 11:04 AM
I have an audio pc with only 2 SSD feed with their own linear PSU and no fans or motors so I disconnect the 12 Volts molex coming from the switching and the pc did start and even more, it sounded calmer with sweeter sound. My motherboard is a supermicro with z270 chipset. The strange thing is that with my others pc around that are also being feed by batteries and SSD the motherboard didn't fire up at all. One is a gigabyte z370 intel i8 *th gen.
Did somebody try this?
Hello, screenmusic. Very interesting this topic. My motherboard doesn't even have the 12v connector, do you believe? It only works with the 24-way connector coming from the power supply. It took me a little while to understand what you had referred to and I found it curious to work this way. The best part of the Asrock Q1900-ITX is that it works with very little power, which I find very advantageous.
Here, what I did and I thought was the cause of minor improvement, was to remove from the SSDs the power of 12v. They worked (when I used them inside the PCA) only with the 5v (red) and negative (black) wire. I think removing the 12v (yellow wire) connection bring a very small, but sensitive, improvement. Today I wouldn't know if the results would repeat themselves, because my PCA no longer uses internal storage.
We can take advantage for to realize the fact that a totally separated, clean and better power feed for the CPU also will increase the SQ. But disconnecting it completely will be the absolute best, i.e. totally silence
I completely agree with you. Independent power supply since from the transformer is better. However, I already tested this here (when using another motherboard) and I found that the result doesn't make up for the cost. I think the cost of a good quality full-ATX linear power supply is too high for the delivery result, so I chose to use the M4-ATX Mini-Box and a superlative linear power supply. I also believe that this is related to the very low consumption of my computer, which ends up generating little demand, low noise and, consequently, making the full-ATX linear power supply boosting not very useful. I think that with an Intel Xeon or something of greater demand this type of source will be justified better.
I have some prototypes in operation and I believe that this year I should be able to get a new version to work. Of course, my projects, not to market.
- Speakers KEF Reference 203/2 with spikes;
- Integrated amplifier Sunrise V8 MK IV;
- DAC Ayre QB-9 192/24 + Sax Soul Ágata Fuse + Furutech FI-03 ( R);
- Source: Audio-PC is a dedicated computer with an Asrock Q1900-ITX (optimized BIOS), 16GB Corsair Vengeance DDR3 RAM 1333MHz, linear power supply (MK III), Furutech FI-06 ( R) and JCAT USB Card FEMTO. The Operational System is a Windows Server 2016 Core Mode 64bits with RAMdisk, JPlay FEMTO Alternative version and Audiophile Optimizer v. 2.20. Control-PC is a Core i7-7500U notebook with 16GB Samsung DDR4 RAM 2400MHz, 120GB Kingston SSD and 2TB Samsung HDD. The Operational System is a Windows Server 2016 GUI Mode 64bits with JPLAY FEMTO Alternative version.
- Cables: Nordost Tyr (speaker), Nordost Valhalla XLR (interconnect), Curious Cable (USB), Nordost Valhalla Power Cable (power distributor), Transparent PowerLink MM² (integrated amp.), Purist Audio Design 20th Anniversary Power Cable (computer), Nordost Valhalla Power Cable (DAC), Kimber Kable 12TC + gold plated connectors (24 way internal power supply cable of the mother board);
- Acessories: Furutech GTX-D (G); Furutech GTX-D ( R) (x2); Sunrise Deep Line (x3); spikes Viablue HS; ebony spikes, carbon fiber bases; Nordost Qv2 (x3); acoustical and electrical reinforcements.