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Gavin1977

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  1. Hi Bob - Any feedback on your findings of the Element H USB card, and comparisions with SoTM txUSBultra?
  2. Seems as though under certain circumstances e.g. very good linear power supply and good software (e.g. Euphony) in a optimised single box might be the preferred option at the moment. bobfa has also experienced this. davide256 also confirms above that upgraded power supply removed the need for a separate endpoint
  3. Any feedback on audio quality uplift between 1 to 2 NUCs?
  4. You've opened up another can of worms :-) Shame GPU cannot be used as a USB endpoint as well (HDMI I2S perhaps though). You've got me thinking about PICMG 1.3 / SHB Express combinations to interconnect two computers. Anyone have experience with this? I tried Windows 10 Enterprise LTSC 2019 with JPLAY on my NUC and it was a 'pleasing' clean sound, but was quite a bit behind behind Euphony. I tried to set up a linux virtual PC (using Hyper-V and also Virtual box) and tried to get it to boot from my copy of Euphony on USB (because Euphony needs a dedicated hard drive), but no luck getting this configuration to work at the moment the virtual pc won't boot. If I was sucessful in getting this to boot then I'd try to run Roon core on Windows 10 Enterprise LTSC 2019 and Euphony on the virtualised PC (dedicated CPU core to it) - would be interesting, but it's looking like it might not be technically feasible. Am also interested in the Network Audio Adapter approach, so will look at that.
  5. Excellent - just the sort of experiment I would be interested in! I look forward to the results as I've also got the DNHE NUC (Powered by SR7 in my case) and see your experiment as the next step. You can always externally mount the JCAT card for testing to see if it's worth modifying the case. Interested in your indication that JCAT Femto followed by SOtM tX-USBultra is worthwhile - how much improvement over just a single JCAT or SOtM tX-USBultra? If you had just one which one would you purchase?
  6. Great find - do you have a NUC to compare against? Asrock iBOX-V1000 doesn’t say ECC compliant on their spec sheet, nor can I see PCIe slot... had ASRock said these things can be done or are you going to mod the chassis?
  7. Very interesting and many thanks for the feedback. Epyc processors do indeed have separate 'Zepplin' dies in one CPU package which are connected via AMD Infinity fabric so different NUMA configurations are possible and hence potential optimisation of resources. This is probably why the SGM server has all of it's RAM banks populated as there must be some sort of audiable benefit for this (I assume SGM are operating on a similar basis although this is an intel based system). Shame Epyc processors have such high TDP, I have looked at AMDs new Embedded V1605B - but it's just a single die. So no opportunity for Numa / dual CPU style optimisations there. An Epyc system would be reliant on a HDPlex or Paul Hynes SR7 to satisfy these levels of power consumption - I'd like to keep within a lower power budget. I think Intel vPro CPU or Xeon CPU's with VT-x and VT-d capabilities are quite interesting to me now since you can assign resources - I think I'll try installing Windows 10 Enterprise LTSC 2019 OS, Roon and Jplay playback software on My Intel DNHE NUC with the i7-8650U processor and also play with the VT-x & VT-d capacities as little experiment. I will try setting up Euphony as a virtual endpoint with it's own dedicated disk (the main OS and Roon can reside on the M.2 SSD).
  8. Also, many thanks to Seeteeyou - partiqularly the link to the block diagram for the supermicro motherboard. The point of interest here is that on a dual CPU motherboard the second CPU only has a high bandwith UPI link to deal with - what this says to me is that 'technically' a dual CPU motherboard such as this one might well have the potential to be 'better' than a single CPU solution as all of the heavy lifting is done by one of the CPU's leaving one CPU as an endpoint as Seeteeyou suggests. Using two separate sinlge processor computers as server/endpoint would not achieve this as each CPU would need to talk to the PCH. Quality of bridge and power supplies all have an impact of course. I feel satisfied that some substance has been found on the topic 😀
  9. Thanks for the feedback. I do think there is a technical approach that can be taken to this and you've highlighted some of your findings which are useful. I was hoping that someone would have undertaken a comparision - of course it would not be absolute - just an indication. Lots of useful infromation on these forums but it takes some time to root them out - for example Marcin on the 'main thread' has clearly stated that ECC Wide Temperature Apacer memory has made a difference. Some people have likend the effect to the improvement you get using RAM boot... so it gives you an idea of the improvement and where to try and focus resources. What I haven't found though is someone who's upgraded to ECC memory, but also knows what magnitude of improvement you can have from a end-point / server config as well for comparative purposes. Perhaps you're also right in the fact that it becomes irrelevant once you have really high quality power supply... this would make sense, but I was just hoping for some more feedback based on peoples experience. Cheers
  10. Probably of interest to others: https://www.udoo.org/udoo-bolt/ Embeded Ryzen with ECC support, TDP-down of 12 W and TDP-up of 25 W. Typical 20V 2.25A (45W) power supply min once memory/SSD is installed, so existing linear power supplies for NUCs like the Paul Hynes SR4 'should' work fine. Also check out the new thread on the LattePanda Alpha - what's really interesting about this Intel Core M3 based system is its 5w/2A amp current draw as this removes the need for costly large amperage linear power supplies to achieve a server/endpoint config. But is the use of Apacer Wide Temperature ECC RAM, as opposed to Non-ECC, worth the extra expense and higher power envelope of the Udoo Bolt V8? Anyone here undertaken comparisions? I ask because the LattePanda Alpha's lower power requirements means that potentially two LattePandas could be used in a server/endpoint config and probably still be powered by a single NUC linear power supply if you're careful about power budget.
  11. I would love to see it powered by one of these: https://www.mpaudio.net/product-page/the-new-ald-hpuln-ps (this is sufficiently spec'd to power two units in server/endpoint) Would need to have a small sealed Toroidal transformer, or a regular DC supply beforehand through. I would test, but have just invested in some other power supplies for testing on NUC's...
  12. OK you've got my interest! The m3-8100Y CPU has a really good single thread performance and only 2 amps / 10 watts max! Could the streaming cable for LattePanda be used for endpoint/server functionality?
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