Re: AUDIO PC: Direct power to motherboad 24 and 4pin (picole
Posted: Wed Jul 08, 2015 3:44 pm
New system for all intents and purposes.
Got three 40aH LiPo batteries. When I installed the 5 volts one I accidentally reversed the leads and destroyed the MB, CPU memory and memory regulator. Not just anyone could do this. http://www.batteryspace.com/lifepo4-pri ... d-dgr.aspx
This returned me to the analogue world for a little over a week.
So I got another MB. Looking around I noticed this ASROCK board that the manual showed having a great bios. I have purchased boards before that the manuals displayed great BIOS only to receive and not be anything like what was in the manual. This one is incredible. Much more adjustability than with the MSI and much smaller in size. No HDMI video - so one less chip to remove. ASRock H81M-DGS R2.0
Newegg link (not that I would ever recommend anyone to buy from them) http://www.newegg.com/Product/Product.a ... 6813157483 Also, using the cheapest HASWELL CELEERON CPU; forty dollars or so.
Using an old 1gB memory I have had for years.
You can adjust CPU voltage - you can adjust things I have never heard of.
It is a little weird with battery turn on - never starts on the first try. I am using the P24 connector as a switch so I have to remove the connector and re-insert and it starts right up. Many could find this annoying.
The big batteries, together with this board, are almost incredible. I like the idea a a big reservoir instead of many smaller ones for packaging mainly. My JCAT card died, before I made a mess of things, so I am using the USB 2.0 outputs with the JCAT cable. I am missing what the card added in the highest frequencies - not quite as atmospheric but the bass is, if anything, even better than it was.
Will install the replacement regulator for the memory sometime this week.
Have an NEC based USB 2.0 card on the way. With the ASROCK riser I can power directly from the battery. I do not think USB 3.0 is the way to go and this was reinforced to me by the REGEN fellow who says how it is implemented is not ideal for audio, too noisy. Plus I wonder of half of the goodness of pcie USB is the more direct connection with the CPU? The REGEN fellow also added that there are NO USB 3.0 inputs on DACs or USB/I2S converters so what is the point? I will find out. I will eventually, with Nigel's help (!) install a TXCO on the card.
For ease of conversion to battery power the big batteries are much simpler to implement. Instead of numerous supplies, which very well could have worthwhile advantages sonically, you have the three standard rails. The 12 volts P24 rail has so little work to do I retain the smaller A123s for this. Still using the big A123s for SSD power.
Used to be when I returned to analogue after digital I felt a big relief. Now the tables have turned due to a certain player. Excuse the pun ...
Got three 40aH LiPo batteries. When I installed the 5 volts one I accidentally reversed the leads and destroyed the MB, CPU memory and memory regulator. Not just anyone could do this. http://www.batteryspace.com/lifepo4-pri ... d-dgr.aspx
This returned me to the analogue world for a little over a week.
So I got another MB. Looking around I noticed this ASROCK board that the manual showed having a great bios. I have purchased boards before that the manuals displayed great BIOS only to receive and not be anything like what was in the manual. This one is incredible. Much more adjustability than with the MSI and much smaller in size. No HDMI video - so one less chip to remove. ASRock H81M-DGS R2.0
Newegg link (not that I would ever recommend anyone to buy from them) http://www.newegg.com/Product/Product.a ... 6813157483 Also, using the cheapest HASWELL CELEERON CPU; forty dollars or so.
Using an old 1gB memory I have had for years.
You can adjust CPU voltage - you can adjust things I have never heard of.
It is a little weird with battery turn on - never starts on the first try. I am using the P24 connector as a switch so I have to remove the connector and re-insert and it starts right up. Many could find this annoying.
The big batteries, together with this board, are almost incredible. I like the idea a a big reservoir instead of many smaller ones for packaging mainly. My JCAT card died, before I made a mess of things, so I am using the USB 2.0 outputs with the JCAT cable. I am missing what the card added in the highest frequencies - not quite as atmospheric but the bass is, if anything, even better than it was.
Will install the replacement regulator for the memory sometime this week.
Have an NEC based USB 2.0 card on the way. With the ASROCK riser I can power directly from the battery. I do not think USB 3.0 is the way to go and this was reinforced to me by the REGEN fellow who says how it is implemented is not ideal for audio, too noisy. Plus I wonder of half of the goodness of pcie USB is the more direct connection with the CPU? The REGEN fellow also added that there are NO USB 3.0 inputs on DACs or USB/I2S converters so what is the point? I will find out. I will eventually, with Nigel's help (!) install a TXCO on the card.
For ease of conversion to battery power the big batteries are much simpler to implement. Instead of numerous supplies, which very well could have worthwhile advantages sonically, you have the three standard rails. The 12 volts P24 rail has so little work to do I retain the smaller A123s for this. Still using the big A123s for SSD power.
Used to be when I returned to analogue after digital I felt a big relief. Now the tables have turned due to a certain player. Excuse the pun ...