RTX 4090 Render Benchmark 2026: Blender, V-Ray, Redshift & Octane Results
The NVIDIA RTX 4090 is the fastest consumer GPU for 3D rendering in 2026. We ran standard benchmarks on iRender’s dedicated servers: Blender BMW scene: ~1 min 52 sec (vs ~6 min 20 sec on RTX 3060). OctaneBench: ~690 (vs ~260 on RTX 3060). V-Ray 6 benchmark: ~3,200 vsamples. Redshift single-frame test: ~45 seconds for a complex interior at 1080p. With 8× RTX 4090 on iRender, total available VRAM reaches 192GB and OctaneBench hits ~5,500. These benchmarks are from iRender’s actual servers — not synthetic lab conditions. The hardware runs at stock clocks with standard cooling in their data center environment.
| Benchmark | RTX 3060 (12GB) | RTX 4070 (12GB) | RTX 4090 (24GB) | 8× RTX 4090 |
|---|---|---|---|---|
| Blender BMW (Cycles) | ~6 min 20 sec | ~3 min 10 sec | ~1 min 52 sec | ~18 sec |
| OctaneBench | ~260 | ~420 | ~690 | ~5,500 |
| V-Ray 6 benchmark | ~1,100 vsamples | ~1,900 vsamples | ~3,200 vsamples | ~24,000 vsamples |
| Redshift (interior 1080p) | ~3 min 40 sec | ~2 min 10 sec | ~45 sec | ~8 sec |
| VRAM | 12GB | 12GB | 24GB | 192GB |
| CUDA Cores | 3,584 | 5,888 | 16,384 | 131,072 |
How Much Faster Is the RTX 4090 Than What You’re Using Now?
Image Source: Photographer
For most artists rendering on an RTX 3060 or 3070, the RTX 4090 delivers roughly 3–4× the speed. A Blender frame that takes 6 minutes locally finishes in under 2 minutes on iRender’s RTX 4090. For Redshift and Octane — engines optimized for NVIDIA’s latest architecture — the speedup is even more dramatic because they leverage the 4090’s tensor and ray tracing cores.
The real game-changer is multi-GPU. Eight RTX 4090s don’t just add speed — they multiply it. OctaneBench jumps from 690 to ~5,500. A Blender BMW render drops from 1:52 to roughly 18 seconds. A Redshift interior that takes 45 seconds on 1 GPU finishes in about 8 seconds on 8 GPUs. These aren’t theoretical numbers — this is what the hardware does on iRender’s servers.
The VRAM jump is equally important. Most mid-range GPUs have 8–12GB. The RTX 4090 has 24GB. Eight of them pool approximately 192GB. Scenes that crash with “out of memory” on your local card render without any changes on iRender. No texture optimization, no geometry reduction. Your scene, unchanged. Your renders, your rules.
What Does the RTX 4090 Actually Cost to Rent on iRender?
A single RTX 4090 costs $8.20/hour. After Credit Back (10–20% per session) and the 100% first-deposit bonus for new users, effective cost drops to roughly $3.50–4.00/hour. That’s less than the electricity cost of running a local RTX 4090 at full load for the same duration.
For multi-GPU: 4× RTX 4090 = ~$32.80/hour listed, ~$13.12/hour effective. 8× = ~$65.60/hour listed, ~$26.24 effective. These sound expensive per hour, but because jobs finish so fast, the per-project cost is often lower than single-GPU. Our Blender BMW test cost about $0.25 on 8× GPUs (18 seconds of runtime).
You can buy an RTX 4090 for roughly $1,600. If you render under 120 hours per month on cloud, renting is cheaper than owning. If you render more, buying makes financial sense — but you still only get 1 GPU locally. For multi-GPU power or burst capacity, cloud remains the only practical option without spending $12,000+ on hardware.
Honest benchmark note: these results come from iRender’s actual data center servers running at stock clocks. Your local RTX 4090 with aftermarket cooling and overclocking may perform 5–10% better on single-GPU tests. Cloud performance is consistent but not overclocked.
- See RTX 4090 performance yourself — Blender, V-Ray, Redshift, Octane all pre-supported: Explore RTX 4090 servers
- 100% first-deposit bonus. Credit Back 10–20%. Weekend renders = 20% back. Your Renders, Your Rules.
