Specs computer

I'm currently running Organteq under Debian 9 (linux) on a Lenovo Thinkcentre M73 Desktop from about 2015. This rather old desktop, with its only slightly newer operating system (2018), has a 4x Intel(R) Core(TM) i5-4570 CPU @ 3.20GHz with 8GB of memory and a new 1TB SSD storage disk. So, all in all, it is not an all singing, all dancing, cutting edge, ultra powerful computer system. However, it does cold boot to login in about 3 seconds using about 350MB of RAM, so there are some advantages to maintaining an old computer system.

When I'm re-playing a complex, 4 keyboard midi file with Organteq it will use, at maximum, about half of one of the four processors and utilise about 20 MB of RAM. It cannot, therefore, be said to be hogging my system resources, whilst I am playing with it. The system is configured with a Real-Time kernel, if only to improve the audio quality and to avoid the annoyance of XRUN screeches, as I am usually running a large number of other applications at the same time, which may take up far more in the way of resources.

So to answer your question, you can obtain a perfectly acceptable response for Organteq on a rather old, low grunt computer, assuming you are prepared to tune your computer system a bit.

Michael

Very roughly, Hauptwerk mostly needs lots of RAM while Organteq mostly needs lots of CPU power.

A sample based VPO, such as Haupwerk, keeps actual audio recordings of individual pipes in RAM and the organ is played by mixing them in real time. As the software is mostly just mixing audio, the CPU requirements tends to be modest, but all that prerecorded audio requires a lot of RAM. Ususally, the amount of RAM limits how many pipes (and variants of them, such as recordnings from different distances) can be loaded at once. For some huge Hauptwerk sample sets, upwards of 100GB of RAM might be useful to load everything, in maximum quality.

A modelling based VPO, such as Organteq, uses mathematical models of individual pipes and the organ is played by, in real time, computing (good approximations of) how air flowing through them sounds. As there is no prerecorded audio, the RAM requirements tends to be modest, but the modelling math requires a lot of CPU power. Ususally, the CPU limits how many pipes can be speaking at once. For max polyphony in Organteq 1 (512 sounding voices) my current Intel Core i9-10900 (10 cores, 20 threads, 65W, integrated graphics) seems to offer a healthy margin.

My previous Core i7-6700HQ gave me a polyphony of around 160, which ususally was enough for my organ music, so a NUC capable of sustaining similar performance, without throttling, should be adequate for manually playing Organteq standalone, perhaps with somewhat modest registrations. Future versions could be more demanding, though. Should you want to run Organeq together with other virtual instruments in a DAW, that will also require some more CPU power.

Just like Hankipanki, I'm using Reason 12 (in my case, to add a fake 32' and some blower noise). Since Reason cannot send multiple MIDI channels to a plugin, I have created a workaround allowing me to send four channels of MIDI from Reason to the standalone version of Organteq, but if I want to use Organteq inside Reason, perhaps to add some Reason effects, I need four instances of the Organteq plugin (each keayboard + pedals), which costs even more CPU power.

Thus, in the end, how powerful a computer you might need for Organteq, depends a lot on, specifically, how you want to use it.

I'm following this thread as I have a problem with this. I have a fairy new computer, a MacBook Pro 2020 with i5 and 16GB of RAM. It can not handle full polyphony, I e if I couple all manuals and press the tutti button. In this case I can only play two or there notes at the same time before the CPU overloads. Is there a "smart way" to get around this problem? For huge sample based library like Vienna Symphonic Library (VSL) you can run different mics on different midi channels in a DAW to force the computer to work with multiple threads/cores. Is there something similar you can do with a program such as Organteq?

Thank you Hankipanki. I'll look into if I can do some optimizations on my system. I'm not running any virus scanning programs and  I'm trying to keep my system as slim and simple as possible but maybe there are some things I can do to make it easier for my computer.

I bought a Microsoft Surface Pro 7 i5-1035G4 / 8GB RAM/ 128GB SSD / Win10 Home, which supports both Organteq and Sweelinq very well (I haven't tested Hauptwerk on it yet).
The replaced laptop (tablet) is visible on the attached recording.
https://www.youtube.com/watch?v=YrXC1PCEd-8

BTW--is the Surface connected to an audio interface?

In the beginning, I used the Surface without an external audio interface and it worked fine too. But it's even more convenient to use even the cheapest audio interface. Thanks to this, I have only one cable (USB) to connect - when powering Surface from a battery.
In addition, the audio interface relieves the processor.

I am currently using the big Behringer U-Phoria UMC404HD but I have purchased the tiny PreSonus Audiobox USB96 which I haven't tested yet. But it will definitely play well.

Note that we have different Surface models. I chose the price in the middle (not the most expensive but not the cheapest). The most important thing in Organteq is the processor.