RTX A4000
Ampere · 16 GB GDDR6 ECC · 140 W
Arc B580
Battlemage · 12 GB · 190 W · PCIe 4.0 x8
Dead heat — it comes down to priorities.
In our weighted Specdex score, RTX A4000 lands at 82 and Arc B580 at 82. With scores tied, the decision hinges on which sub-scores matter most to you.
Pick RTX A4000 if…
- ✓ECC VRAM for professional workloads
- ✓ISV certifications
- ✓Huge framebuffer
Pick Arc B580 if…
- ✓Incredible $/frame at 1440p
- ✓12 GB VRAM on a budget card
- ✓Modern AV1 + XeSS 2
Winner by scenario
Derived from the sub-score breakdown · not a separate test4K & rasterization
Arc B580Traditional rendering throughput at high resolution
Arc B580 leads on raster (82 vs 77).
Ray tracing
RTX A4000RT-heavy titles with path-traced lighting
RTX A4000 leads on rt (82 vs 76).
AI workloads
RTX A4000Local inference, upscaling, generative tools
RTX A4000 leads on ai (83 vs 80).
Power efficiency
TieFrames per watt — heat, noise, and PSU sizing
Effectively tied — neither pulls a 2-point weighted lead.
Value for money
Arc B580Specdex score per dollar at MSRP
Arc B580 more score per dollar ($249 vs $1,000).
Score breakdown
Specs side-by-side
| Spec | RTX A4000 | Arc B580 |
|---|---|---|
| Architecture | Ampere | Xe2 Battlemage |
| VRAM | ▲ 16 GB GDDR6 ECC | 12 GB GDDR6 |
| TBP | 140 W | 190 W |
| Release year | 2021 | — |
| Xe cores | — | 20 |
| Ray Tracing Units | — | 20 |
| XMX engines | — | 160 |
| Memory bus | — | 192-bit |
| Bandwidth | — | 456 GB/s |
| Base clock | — | 1.70 GHz |
| Boost clock | — | 2.67 GHz |
| PCIe | — | PCIe 4.0 x8 |
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
Arc B580
- +Incredible $/frame at 1440p
- +12 GB VRAM on a budget card
- +Modern AV1 + XeSS 2
- −PCIe 4.0 x8 interface (not x16) — bottlenecks on PCIe 3.0 boards
- −Older DX11 titles can still struggle
- −Needs resizable BAR
FAQ: RTX A4000 vs Arc B580
Which is better, RTX A4000 or Arc B580? +
Both score 82 on our weighted rubric — tied. 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 Arc B580 worth the price? +
At $249, Arc B580 delivers a Specdex score of 82 — strongest in efficiency.
Does RTX A4000 or Arc B580 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 Arc B580? +
Arc B580 — leads on raster (82 vs 77). Traditional rendering throughput at high resolution.
Which is better for ray tracing, RTX A4000 or Arc B580? +
RTX A4000 — leads on rt (82 vs 76). RT-heavy titles with path-traced lighting.