Hardware architecture guide 2026
How much RAM is needed for architectural software?
The short answer: 32 GB is the best choice for most architects. 16 GB helps out, 64 GB becomes useful when models, renderings and open software accumulate.
Minimum acceptable
To learn, draw in 2D, do simple SketchUp or work with a very tight budget.
Default recommendation
The best benchmark for a sustainable purchase in architecture: current BIM, multitasking, Adobe and moderate 3D.
Comfort for large projects
For heavy Revit or Archicad, linked files, complex Grasshopper, 3D rendering and several open software.
Specialized cases
Very large agencies, simulation, very heavy scenes, professional rendering, local AI or fixed station/workstation.
Short answer
For a sustainable purchase, go for 32 GB
In architecture, you almost never buy a computer for just one piece of software. A real day often mixes Revit or Archicad, SketchUp, AutoCAD, a browser, PDFs, Photoshop, an email, sometimes Twinmotion, Lumion or Enscape. It is this accumulation that increases the need for RAM.
16 GB may still be enough to start, especially in 2D, at school or on small projects. But as soon as you want to keep the machine for several years, open several files, work with serious BIM models or run a rendering engine on the side, 32 GB becomes the most reasonable threshold.
64 GB is not essential for everyone. They become relevant for large Revit or Archicad models, linked files, complex Grasshopper, heavy render scenes, and users who keep a lot of applications open. 128 GB remains a workstation case, rarely a student need.
Decision table
How much RAM depends on the software?
The official thresholds give a minimum. The purchase recommendation must take into account the complete workflow and size of the projects.
| Software | Minimally realistic | Comfort | Big projects | How |
|---|---|---|---|---|
| Revit | 16 GB | 32 GB | 64 GB | Autodesk distinguishes 16 GB for a simple model, 32 GB for a heavier model and 64 GB for large, complex models. |
| Archicad | 16 GB | 32 GB | 64 GB+ | Graphisoft places 16 GB as input, 32 GB for intermediate projects and 64 GB or more for large buildings. |
| AutoCAD | 8 GB | 16 to 32 GB | 32 GB | AutoCAD 2D remains quite lightweight, but Autodesk recommends 32 GB for AutoCAD 2026 with specialized toolsets. |
| SketchUp | 8 GB | 16 to 32 GB | 32 to 64 GB | SketchUp alone does not require a huge amount of RAM. Heavy components, textures, layout and rendering engines quickly change the situation. |
| Rhino + Grasshopper | 8 GB | 32 GB | 64 GB | Rhino has a modest minimum, but Grasshopper, meshes, simulations and heavy imports clearly benefit from more memory. |
| Lumion | 32 GB targeted | 32 to 64 GB | 64 GB | Lumion depends mostly on GPU and VRAM, but RAM loads projects, models and detailed scenes. |
| Twinmotion | 16 GB | 32 GB | 64 GB+ | Epic indicates 16 GB or more for small projects and 64 GB or more for large projects, urban scenes and heavy media. |
| Enscape | 16 GB | 32 GB | 64 GB | The hard point often remains VRAM, but Enscape runs with the host software open. Revit or SketchUp keep their own RAM requirement. |
| D5 Render | 16 GB | 32 GB | 64 GB | D5 relies on GPU and VRAM first. RAM becomes important when the modeling software remains open alongside it. |
| V-Ray | 16 GB | 32 GB | 64 GB+ | Basic requirements are modest, but high-resolution scenes, textures, proxies, and renders can fill up memory quickly. |
| Blender | 8 GB | 32 GB | 64 GB+ | Blender recommends 32 GB. Detailed architectural scenes, cycles, simulations and heavy assets may warrant more. |
| Photoshop, InDesign, Illustrator | 8 GB | 16 to 32 GB | 32 GB+ | Adobe often recommends 16 GB or more. In architecture, the need is growing for large PSDs, boards, PDFs and multitasking. |
By profile
The right threshold depends mainly on your working day
A student just starting out, an independent architect and a BIM agency do not have the same necessary margin.
16 GB may be enough, 32 GB is more durable
If the budget is tight, 16 GB is a good place to start. But to keep the machine for several years with Revit, SketchUp, Adobe and punctual rendering, 32 GB avoids experiencing the limits too early.
32 GB is the best balance
For AutoCAD, SketchUp, Revit or Archicad with browser, PDF, images and some renderings, 32 GB is the most reasonable choice.
64 GB becomes consistent
Linked files, worksharing, heavy models, large teams, complex families and frequent exports justify 64 GB, especially on a main machine.
Do not confuse RAM and VRAM
Lumion, Twinmotion, D5, Enscape and V-Ray GPU depends on GPU and VRAM first. But 32 to 64 GB of RAM is still useful to keep the whole chain open.
RAM, VRAM and unified memory
RAM is system memory. It is used for the operating system, software, open files, caches and multitasking. VRAM is the memory of the graphics card. It is used for textures, 3D scenes, resolution, ray tracing and real-time engines.
On a Windows laptop with Nvidia GPU, the two are separate: 32 GB of RAM does not replace 8 or 12 GB of VRAM, and vice versa. For Lumion, Twinmotion, Enscape, D5 Render or V-Ray GPU, you have to look at both.
On Mac Apple Silicon, the memory is unified. This is effective for Mac-compatible software, but it's not magic: the capacity remains shared by the system, applications and the Apple GPU. And it cannot be increased after purchase.
Sold or scalable RAM: the real trap
Many thin laptops and all MacBook Apple Silicon have non-upgradeable memory. If you buy 16GB today, you'll keep 16GB for the life of the machine.
On a laptop with memory slots, a 16 GB configuration may be acceptable if you plan to upgrade to 32 or 64 GB later. But really check the technical sheet: some machines display 16 GB without the possibility of an easy upgrade.
- Buy a PC with 16 GB of soldered RAM thinking of improving it later.
- Take a large graphics card with only 16 GB of RAM for heavy BIM.
- Compare RAM and VRAM as if they were the same memory.
- Underestimate browser, PDFs, Photoshop, Teams, libraries and linked files.
- Buy a MacBook with too little unified memory, as it cannot be added after purchase.
Final decision
16, 32, 64 or 128 GB: what to choose?
The right purchase is not the largest possible capacity. This is the capability that avoids slowdowns without wasting budget.
Take only if
tight budget, race, AutoCAD 2D, simple SketchUp, small projects, scalable machine or temporary purchase.
To aim for by default
serious new purchase, long studies, Revit/Archicad current, SketchUp + Adobe, multitasking and lifespan of several years.
To choose if
Heavy BIM, large files, regular real-time rendering, complex Grasshopper, many open applications or non-scalable RAM.
To be reserved for severe cases
workstation, simulation, very large scenes, intensive pro rendering, local AI, fixed machines or needs validated in an agency.
Personalized recommendation
Do you combine BIM, rendering and Adobe?
The questionnaire cross-references your software, your budget, the size of the projects and your mobility constraints to recommend a complete configuration, not just an amount of RAM.
Sources
Benchmarks verified on official sources
Publisher thresholds are technical bases. Architect's Laptops recommendations add real-world context: multiple open software, rendering, linked files, mobility and machine lifespan.
- Autodesk Revit 2027 - 16, 32 and 64 GB depending on model size
- Autodesk AutoCAD 2026 - 8 GB minimum, 32 GB recommended
- Graphisoft Archicad 29 - 16, 32 and 64 GB+ depending on project
- SketchUp - hardware and software configuration
- Rhino 8 - system requirements
- Lumion 2026 - role of RAM and busy scenes
- Twinmotion - 16 GB and 64 GB depending on project
- D5 Render - configuration and VRAM
- Enscape - configuration and VRAM
- V-Ray for SketchUp - Minimum and recommended RAM
- Blender - 8 GB minimum, 32 GB recommended
- Adobe Photoshop - 8 GB minimum, 16 GB or more recommended
Frequently asked questions
RAM FAQ for Architectural Software
Is 16 GB RAM enough for Revit?
Yes for small models, learning or occasional use. For serious use with larger mockups, linked files and multitasking, 32 GB becomes much more consistent. For large models, 64 GB is more suitable.
Is 32 GB of RAM enough for Lumion, Twinmotion or Enscape?
Yes for many common projects, provided you also have a suitable GPU and VRAM. For heavy scenes, large libraries, vegetation, VR or frequent exports, 64 GB provides more margin.
Do you need more RAM or a better graphics card?
For heavy BIM, RAM and CPU matter a lot. For Lumion, Twinmotion, Enscape, D5 Render and V-Ray GPU, the graphics card and VRAM take priority. So the right choice depends on which software really slows down your work.
Does the unified memory of a MacBook replace RAM and VRAM?
It is shared between the system and the Apple GPU, which makes the comparison less direct. But it doesn't make a Mac compatible with all software, and it can't be added after purchase. You must therefore choose the right capacity from the start.
Can we add RAM after purchase?
On some laptops, yes. On many ultraportables, thin PC creators and all MacBook Apple Silicon, no. Always check if the RAM is soldered before choosing a 16 GB configuration.