Best Render Farm for Lumion Exterior Rendering: Speed & Cost Guide
The best render farm for Lumion exterior rendering is iRender, offering dedicated RTX 4090 servers (24GB VRAM) at ~$8.20/hour. In our testing, a typical Lumion exterior still image (4K resolution, 5,000+ objects, advanced sky and foliage) rendered in 8–15 minutes on an RTX 4090, costing approximately $1.50–2.50 per image. For comparison, the same scene took 35–55 minutes on a local GTX 1070 workstation. Lumion exterior scenes are the most GPU-demanding arch-viz renders due to heavy foliage, water reflections, and atmospheric effects — making cloud GPU the most practical upgrade for architects facing deadlines.
| Exterior Render Type | RTX 4090 Time | Local GTX 1070 | Est. Cost (iRender) |
| 4K Still — Simple (< 3,000 objects) | 4–8 min | 18–30 min | $0.80–1.30 |
| 4K Still — Complex (5,000+ objects) | 8–15 min | 35–55 min | $1.50–2.50 |
| 4K Panorama 360° | 20–35 min | 90–150 min | $3.50–5.00 |
| Exterior Walkthrough (2 min, 4K) | 20–40 min | 3–6 hours | $3.00–6.00 |
Why Are Lumion Exterior Scenes So GPU-Intensive?
Lumion exterior renders demand significantly more GPU power than interiors because of three factors: foliage systems (trees, grass, hedges with millions of polygons), atmospheric effects (real-time global illumination, volumetric clouds, sun position calculations), and water/reflection rendering (pools, glass facades, wet surfaces). A scene with 8,000+ objects and Lumion’s “Ultra” quality preset can consume over 18GB of VRAM — exceeding the 8GB available on older cards like the GTX 1070.
This is why the RTX 4090’s 24GB VRAM is critical for exterior work. It handles scenes up to approximately 8,000 objects at “Ultra” quality without VRAM overflow. For larger masterplan scenes (10,000+ objects), we recommend switching to Lumion’s “High” quality setting to stay within the 24GB limit and avoid render crashes.
Are There Cheaper Alternatives to iRender for Lumion Exteriors?
Xesktop offers Lumion-compatible servers starting at ~$10–14/hour with RTX 3080 (10GB VRAM) or RTX 4090 (24GB VRAM). The RTX 3080 works for simpler exterior scenes (under 5,000 objects at “High” quality), but its 10GB VRAM is limiting for complex exteriors. AWS EC2 G5 instances (NVIDIA A10G GPU) start at ~$12–20/hour but require manual Lumion installation and configuration — not recommended unless you have IT experience.
Traditional SaaS farms like RebusFarm, GarageFarm, and Fox Renderfarm cannot run Lumion at all due to its real-time single-GPU requirement. There is no “send scene and wait” option for Lumion — you must use an IaaS remote desktop service.
See more: Render Lumion exteriors faster on cloud GPU → View Lumion server options on iRender
Frequently Asked Questions
- How much does it cost to render one Lumion exterior image on a cloud render farm?
On iRender, a single Lumion 4K exterior still image costs approximately $1.50–2.50, based on 8–15 minutes of RTX 4090 server time at $8.20/hour. Simpler scenes with fewer than 3,000 objects can cost as little as $0.80. Panorama 360° images cost $3.50–5.00 due to the six-face render process Lumion uses internally. iRender’s Credit Back system (10–20% returned) can further reduce these costs.
2. Can I render a Lumion exterior walkthrough video on a cloud render farm?
Yes. A 2-minute Lumion exterior walkthrough at 4K resolution takes approximately 20–40 minutes on an iRender RTX 4090 server, costing $3–6. For longer videos (5+ minutes), expect $8–15. The key advantage is speed: the same 2-minute walkthrough takes 3–6 hours on a local GTX 1070, making cloud rendering essential for same-day client deliveries.
3. What Lumion quality settings should I use when rendering exteriors on a cloud GPU?
Use Lumion’s “Ultra” quality preset on RTX 4090 servers — the 24GB VRAM handles it without issues for scenes under 8,000 objects. For larger masterplan scenes (10,000+ objects), switch to “High” quality to avoid VRAM overflow, which causes render crashes or visual artifacts like black patches and missing textures. There is no workaround for exceeding VRAM — Lumion does not gracefully degrade.
Related post: Best Render Farm for Lumion 2025 vs 2026: What Changed?
