Sat Sep 16, 2017 11:50 am
Hello Luc
The processing power of the computer determines how much polyphony the computer can deliver, and that level must not be exceeded by the setting for the sample set. It is that the recommendation of Jiri on the Sonus Paradisi website is about, how powerful the computer has to be to be sufficient for this huge organ.
It is fine that you have solved the problem so far, but unfortunately the processor Intel i7-3820 is not strong enough for this big sample set with 6 channels. That you “have cut the release of the front direct channels to 250 m/s and all the ranks are loaded without compression” helps some, but is probably not enough to avoid that Hauptwerk will fade out the releases of some samples when you play fast with heavy registrations, or even tutti.
I don’t know how much you do inside the computer, however the i7-3820 can be replaced with a much more powerful CPU without it needs to cost a fortune.
Intel Xeon e5-26xx processors socked LGA 2011 will fit in your motherboard, and although they were very expensive form new some years ago, occasionally they can now be found cheap on eBay and other second hand markets. Most Xeons are clocked low intended for servers, but some Xeons are made for workstations and have a relatively high clock frequency and do fine for Hauptwerk.
Good options could be an 8 core 16 threads e5-2687w, an e5-2687w v2 or a 10 core 20 threads e5-2690 v2.
Before buying of course make sure that the CPU is supported by the motherboard. If the BIOS has to be updated to support the Xeon CPU, do that before exchanging the processors.
Recently I got an e5-2687w, have clocked it to 3.57 GHz and with buffer size 1024 the computer delivers 20.000 static polyphony, 9-10.000 for the sample set.
Best regards
Johannes