RTX A4000
Ampere · 16 GB GDDR6 ECC · 140 W
GeForce RTX 4090
Ada · 24 GB GDDR6X · 450 W
GeForce RTX 4090 takes it — here’s why.
In our weighted Specdex score, RTX A4000 lands at 82 and GeForce RTX 4090 at 97. That puts GeForce RTX 4090 ahead by 15 points — a decisive margin driven mostly by its strengths in the categories below.
Pick RTX A4000 if…
- ✓ECC VRAM for professional workloads
- ✓ISV certifications
- ✓Huge framebuffer
Pick GeForce RTX 4090 if…
- ✓NVIDIA driver stack
- ✓DLSS support on RTX
- ✓Strong resale value
Winner by scenario
Derived from the sub-score breakdown · not a separate test4K & rasterization
GeForce RTX 4090Traditional rendering throughput at high resolution
GeForce RTX 4090 leads on raster (97 vs 77).
Ray tracing
GeForce RTX 4090RT-heavy titles with path-traced lighting
GeForce RTX 4090 leads on rt (92 vs 82).
AI workloads
GeForce RTX 4090Local inference, upscaling, generative tools
GeForce RTX 4090 leads on ai (94 vs 83).
Power efficiency
RTX A4000Frames per watt — heat, noise, and PSU sizing
RTX A4000 leads on efficiency (85 vs 73).
Value for money
RTX A4000Specdex score per dollar at MSRP
RTX A4000 more score per dollar ($1,000 vs $1,599).
Score breakdown
Specs side-by-side
| Spec | RTX A4000 | GeForce RTX 4090 |
|---|---|---|
| Architecture | Ampere | Ada |
| VRAM | 16 GB GDDR6 ECC | ▲ 24 GB GDDR6X |
| TBP | 140 W | 450 W |
| Release year | 2021 | 2022 |
RTX A4000
- +ECC VRAM for professional workloads
- +ISV certifications
- +Huge framebuffer
- −Expensive per-frame vs consumer
- −Lower gaming clocks
- −Driver optimized for CAD/DCC not games
GeForce RTX 4090
- +NVIDIA driver stack
- +DLSS support on RTX
- +Strong resale value
- −Power draw scales with tier
- −Gen-over-gen price creep
- −VRAM gated per tier
FAQ: RTX A4000 vs GeForce RTX 4090
Which is better, RTX A4000 or GeForce RTX 4090? +
GeForce RTX 4090 scores 97 on our weighted rubric — ahead by 15. Your best pick depends on the sub-scores above.
Is RTX A4000 worth the price? +
At $1,000, RTX A4000 delivers a Specdex score of 82 — strongest in efficiency.
Is GeForce RTX 4090 worth the price? +
At $1,599, GeForce RTX 4090 delivers a Specdex score of 97 — strongest in raster.
Does RTX A4000 or GeForce RTX 4090 last longer? +
Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.
Which is better for 4K gaming, RTX A4000 or GeForce RTX 4090? +
GeForce RTX 4090 — leads on raster (97 vs 77). Traditional rendering throughput at high resolution.
Which is better for ray tracing, RTX A4000 or GeForce RTX 4090? +
GeForce RTX 4090 — leads on rt (92 vs 82). RT-heavy titles with path-traced lighting.