Best Cloud Rendering for Architecture: RTX 4090 vs RTX 3080 Benchmark on Cloud
For most arch-viz work on cloud, the RTX 4090 is 40–70% faster than the RTX 3080 — but VRAM is the bigger story. The RTX 4090 has 24 GB VRAM and 16,384 CUDA cores. The RTX 3080 has 10 GB VRAM and 8,704 CUDA cores. On simple interiors, both perform well. On vegetation-heavy exteriors or complex scenes above 10 GB, the 3080 hits a wall — it starts swapping to system RAM and render times spike 2–3×. On iRender, the 4090 costs ~$8.20/hr while 3080-tier servers (via Xesktop) run ~$10–12/hr. The 4090 is both faster and cheaper per hour.
| Application | Scene Type | RTX 3080 (est.) | RTX 4090 (est.) | 4090 Advantage |
|---|---|---|---|---|
| Lumion | Simple interior | ~12–18 min | ~8–12 min | ~40% faster |
| Lumion | Exterior + vegetation | ~25–50 min ⚠ | ~12–20 min | ~50–60% faster |
| Enscape | Revit commercial | ~4–8 min | ~2–5 min | ~40% faster |
| V-Ray GPU | 4K interior | ~15–25 min | ~8–15 min | ~45% faster |
| D5 Render | Residential interior | ~5–10 min | ~3–6 min | ~40% faster |
| D5 Render | Large exterior | ~15–30 min ⚠ | ~8–15 min | ~50–70% faster |
Why Does the RTX 3080 Struggle on Large Arch-Viz Scenes?
t’s almost entirely about VRAM. The 3080’s 10 GB handles simple interiors fine. But once a Lumion scene loads 200+ trees or V-Ray has 8K textures, usage pushes past 10 GB and the GPU swaps data to system RAM — dramatically slower. The 4090’s 24 GB gives 2.4× the headroom, keeping large scenes entirely in fast GPU memory.
Under 8 GB VRAM, the 3080 is ~40% slower — noticeable but manageable. Past 10 GB, the gap widens to 50–70% because the 3080 is actively bottlenecked, not just slower.
When Is the RTX 3080 Good Enough on Cloud?
If you mostly do interior rendering — kitchens, bathrooms, small commercial — an RTX 3080 handles the work fine. Scenes stay under 8 GB VRAM. The 40% speed penalty means a 12-minute render instead of 8. At Xesktop’s ~$10–12/hr for 3080, per-image cost is roughly similar to iRender’s 4090 at $8.20/hr because slower speed offsets cheaper rate.
Where the 4090 becomes essential: vegetation exteriors, walkthrough animations, any scene above 10 GB. The 3080’s VRAM bottleneck makes these workloads not just slow but potentially crash-prone.
See more: Render arch-viz on a cloud RTX 4090 — ~$8.20/hr → Render arch-viz on a cloud RTX 4090 — ~$8.20/hr → View RTX 4090 servers & pricing
Frequently Asked Questions
- How much faster is the RTX 4090 than RTX 3080 for architecture rendering?
