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rickca

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About rickca

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  1. Funny I just read an article from a financial analyst predicting that Apple will buy Sonos.
  2. Of course you know that inside it there are Buffalo chips. AKA meadow muffins. 😀
  3. Yes, of course I remember your post and it was very helpful. It's one of the things that got me asking this question. Quite simply, other things being equal, would a 65W i7-10700 sound the same as a 125W i7-10700K or would one of them sound better? In your post, you were using different motherboards with the i7-8700T and i7-8700K. That will make a difference, but probably not as much as the CPU. So the 95W CPU sounds a lot better than the 35W CPU. Does this mean that a 125W CPU is going to be better than a 95W CPU? Not necessarily, right? As you mention, the power supply quality (and wattage) is an effective constraint. A 65W CPU is actually a lot closer to a 95W watt CPU than a 35W CPU ... especially when you put frequency limits on the 95W CPU ... because things like CPU frequency/voltage don't respond in a linear fashion. I suspect that turbo algorithms used to stay within the TDP power budget strongly influence the sound quality. These algorithms have to work a lot more aggressively on a 35W CPU than on a 65W CPU. They certainly affect the load on the power supply. Different operating systems and music players sound different because they do different processing. I'm suggesting something similar is happening with the processor firmware. It's complicated.
  4. Yes, exactly. And if one sounds better than the other, why? I acknowledge @StreamFidelity's point that an i7-10700 may just be a lower binned i9-10900K that didn't test well enough to meet i9-10900K specs. I spent nearly a year in Burlington, VT testing the PS3 chip at an IBM manufacturing facility. The amount of test data collected about each chip is mind boggling, way beyond any published specs.
  5. Correction. The non-custom SR7 does 12V/12A. Apparently Paul has a new configuration that does 12V/16A. https://audiophilestyle.com/forums/topic/30376-a-novel-way-to-massively-improve-the-sq-of-computer-audio-streaming/?do=findComment&comment=1061805 May I reiterate ... let's also for the moment leave aside whether the 125W CPU would enable more processor intensive HQPlayer filters/modulators than the 65W CPU.
  6. You know I do. It depends on the design of the power supply. My HDPLEX 200W fried the rectifier and went up in a puff of smoke. The new 300W unit is supposed to fix that.
  7. rickca

    HQ Player

    @Miska Cooper Lake (3rd gen Xeon Scalable) introduces AVX512-based BF16 (bfloat16) instructions. Is this something that HQPlayer can exploit for improved performance?
  8. Can I achieve the same sound quality with a 65W i7-10700 as with a 125W i7-10700K? OK sure, the 65W CPU can't be overclocked, but let's leave overclocking out of this discussion unless it's relevant to sound quality. Let's also for the moment leave aside whether the 125W CPU would enable more processor intensive HQPlayer filters/modulators than the 65W CPU. Consider a 12V/10A SR7 rail. 10A isn't nearly enough to run either CPU at its maximum potential processing power. For example, with certain benchmarks the i7-10700K will peak at over 200W. Granted such workloads are not representative of a music server, even one running HQPlayer. Here's the thing. The 65W CPU single core turbo is 4.7 GHz vs 5.0 GHz with the 125W CPU. And the all core turbo is 4.6 GHz on the 65W CPU vs 4.7 GHz on the 125W CPU. So the peak power demand for both processors is going to be similar. The key difference is in the base frequency which is 2.9 GHz on the 65W CPU vs 3.8 GHz on the 125W CPU. Probably the 65W CPU can't sustain turbo for as long as the 125W CPU, but I haven't confirmed that by comparing the PL2 and Tau specs of these two processors. So my question is whether the sound quality (maybe focusing on dynamics and transients) would be just as good with a 65W CPU as with a 125W CPU given a 12V/10A SR7 rail. What does it matter? Well, the lower power budget of the 65W CPU means it's going to be easier to cool, and certainly easier to accommodate in a fanless case. And since 10A is a constraint for either processor, is it better to go with the 65W? Since we are using high power processors at very low utilization, I think it's a legitimate question. I don't know if anyone has a definitive answer, but I would really like some input from users who have some experience building systems. Here are a couple of articles that got me thinking about this question. https://www.anandtech.com/show/15758/intels-10th-gen-comet-lake-desktop https://www.anandtech.com/show/15785/the-intel-comet-lake-review-skylake-we-go-again/5
  9. Christiaan Punter compared it the USB input on the Aeris which is certainly not its best input. The USB input on the Aeris isn't asynchronous USB, it's adaptive USB and I have never even used it. I use the Aeris BNC input from a Berkeley Audio Alpha USB. The USB input on the Aeris is covered in a bit of detail in this article http://www.theaudiobeat.com/equipment/jeff_rowland_aeris.htm
  10. This article clears things up. https://www.ofsoptics.com/faq-guide-to-laser-optimized-fiber/
  11. https://www.marketwatch.com/story/dalai-lama-to-release-album-in-july-2020-06-09?mod=mw_latestnews
  12. rickca

    Into the Future

    You are in good company. https://www.marketwatch.com/story/this-is-one-amazon-customer-that-jeff-bezos-is-happy-to-lose-2020-06-08?mod=newsviewer_click
  13. OK now I'm intrigued. My initial reaction to the announcement was ... too bad it's a CD player and not a streamer!
  14. 300W LPS is now in stock for Asia. Preorder now for 6/30 in USA and 7/15 for EU. It's been a long time coming.
  15. Can you give us an estimate of when can we expect to see this? Thanks!
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