GrandOrgue System Requirements

There is no official system-requirements page from the developers, so this guide collects community-tested guidance: an i5-class CPU and 16 GB of RAM is a sensible starting point, but your real requirement is set by the sample sets you load.

GrandOrgue’s developers have never published an official “minimum/recommended” spec sheet, so treat every number below as hard-won community experience rather than gospel. The single most important rule is this: RAM demand is set by the sample set, not by the program. A small practice organ fits in a few gigabytes; a large cathedral instrument can need 32 GB or more. Everything else is secondary.

The sensible starting point

• CPU: any modern i5-class processor (or equivalent) from the last decade is plenty. Sample playback is not very CPU-hungry; the CPU mostly matters for convolution reverb and polyphony headroom.
• RAM: 16 GB to start. That comfortably loads most medium-sized free organs. If your ambition is the biggest cathedral sets, plan for 32 GB or 64 GB — and read sample sets for low-RAM systems before spending money.
• Storage: an SSD is strongly recommended. This is the single biggest quality-of-life upgrade. A 30 GB organ can take several minutes to load from a spinning hard drive; from an NVMe SSD the same organ typically loads in under 30 seconds. Sample sets are large — budget 50–200 GB of disk space if you collect several.
• GPU: irrelevant. Any integrated graphics from the last fifteen years is fine.

Audio: the part people underestimate

For casual exploring, onboard audio works. For actual playing, you want low latency: on Windows that means ASIO (ASIO4ALL or, better, the driver of a dedicated USB audio interface); on macOS, CoreAudio is already low-latency; on Linux, JACK is the standard choice. If you hear dropouts or a mushy delay between key and sound, the audio setup — not your CPU — is usually the culprit. See our guide to audio interfaces for GrandOrgue for what to buy and how to tune buffer sizes (128–256 samples is the usual sweet spot).

MIDI hardware

Any class-compliant USB MIDI keyboard works. For a real organ feel you will eventually want multiple manuals and a pedalboard — our MIDI keyboard guide and pedalboard guide walk through the options, and building a virtual organ console puts the whole rig together at three budgets.

Platform-specific details: Windows · Mac · Linux · Raspberry Pi. And if a laptop is all you have: yes, modest laptops run small-to-medium organs fine — start small and upgrade the RAM later.

Frequently Asked Questions

How much RAM does GrandOrgue need?

It depends entirely on the sample set: small practice organs need a few GB, medium church organs fit in 16 GB, and the largest cathedral instruments can need 32 GB or more. 16 GB is a sensible starting point for most free sample sets.

Is an SSD really necessary?

Not strictly, but strongly recommended. Sample sets stream gigabytes of data; an SSD turns multi-minute load times into seconds and makes the whole experience dramatically smoother.

What CPU do I need for GrandOrgue?

Any i5-class CPU from the last decade or so is plenty. Sample playback is mostly limited by RAM and storage speed, not processor power — unless you run heavy convolution reverb on very high polyphony.

Can I run GrandOrgue on a laptop?

Yes. Modest laptops handle small-to-medium sample sets well. If you are on 8 GB of RAM, stick to smaller organs and read our low-RAM sample set guide.

Do I need a dedicated audio interface?

Not to start, but it is the most worthwhile upgrade for serious playing: lower latency, cleaner outputs, and proper monitor/headphone control. Our audio interface guide compares the practical options.