Relative Value76balanced preset
Arc B570 vs Arc B580 — value comparison
Relative Value79balanced preset
Arc B570 and Arc B580 are practically even under balanced weights at the current dataset offers: 76 vs 79. Change the preset or your priorities before deciding.
Price data · US · USD · New · A 2026-08-04 · B 2026-08-04Coverage · 2 tracked new-offer records across both modelsBenchmark confidence · no estimate flags on these two recordsAffiliate links · We may earn a commission from these links. Scores are calculated separately using our methodology.
Checking today's prices… This shared scoring frame includes an offer with a 24-hour freshness window, so price-derived results finish loading in your browser a moment from now. Capability, performance and verified specifications are already final.
02 · Decision matrix
One decision, three separate questions
Capability ignores price. Relative Value adds the current dataset offers and your priorities. Keeping them separate prevents a cheap product from being mistaken for the faster product.
The decision, split by questioncapability · value · price are separate answers
Capability by task
| Scenario | Arc B570 | Arc B580 |
|---|---|---|
| 1080p Gaming | B#35 | A#29✓ |
| 1440p Gaming | C#35 | B#29✓ |
| 4K / VR | F#35 | D#29✓ |
| Ray Tracing @ 2K (1440p) | F#34 | D#27✓ |
| AI / Local LLM | D#39 | D#37 |
| 3D Rendering | F#35 | D#30✓ |
| Light Use & Efficiency | B#8 | B#20 |
Arc B580 grades higher in 5 of 7 graded scenarios (2 tied) and is never graded lower. These are the same S–F grades as the tier list — capability only, price excluded. The value rows below add prices from the 2026-08-04 offer frame. How tiers are assigned →
Relative Value by priority
Balancedpractically even (≤3 pts)
76
79
1080p Budgetpractically even (≤3 pts)
97
97
1440p Sweet Spothigher relative value lit
53
57 ✓
4K Ultra / VRhigher relative value lit
14
18 ✓
Ray Tracingpractically even (≤3 pts)
22
23
AI / LLMpractically even (≤3 pts)
9
11
Both products are normalized within the same in-stock market frame per preset. A check marks the higher Relative Value; a difference of 3 points or less is shown as practically even.
Crossover price is loading. The switch-over point and Strong Value threshold appear as soon as today's offer snapshots are confirmed in your browser.
03 · Price crossover
The price changes the answer
Current offers, crossover points and Strong Value thresholds answer different questions. Thresholds are calculations, not price forecasts.
A · Arc B570
- Current dataset offer · NewUS · USD · snapshot 2026-08-04
- $260
- Beats Arc B580 atbalanced weights; rival offer held fixed
- $241
- Strong Value at80+ Relative Value threshold
- $238
B · Arc B580
- Current dataset offer · NewUS · USD · snapshot 2026-08-04
- $310
- Beats Arc B570 atbalanced weights; rival offer held fixed
- $334
- Strong Value at80+ Relative Value threshold
- $306
04 · Workload performance
Performance indexes, side by side
These are capability indexes. Price is intentionally excluded here so the faster product and the better-value product cannot be confused.
Raster performance
520
660
660
Ray tracing
560
538
538
AI (FP16 tensor)
99
117
117
A · Arc B570B · Arc B580All indexes share one 1000-point scale (RTX 4070 = 1000).Arc B580 shows higher Value under every weighting we test — a stable result in the 2026-08-04 offer frame.
05 · Platform & ownership
Fit, power and ownership context
Only verified structured fields are shown. Physical fit, connectors, cooling and typical warranty belong to the representative tracked partner card named in each column; other board variants can differ.
A · Arc B570
- Representative offer variantASRock Arc B570 Challenger OC
- Host interfacePCIe 4.0 x8
- Suggested PSU450 W
- Power connectors1x 8-pin
- Card length249 mm
- Expansion slots2-slot
- Coolingair
- Display outputs1× HDMI · 3× DisplayPort
- Warranty (typical new)24 mo
B · Arc B580
- Representative offer variantASRock Arc B580 Challenger OC
- Host interfacePCIe 4.0 x8
- Suggested PSU450 W
- Power connectors1x 8-pin
- Card length249 mm
- Expansion slots2-slot
- Coolingair
- Display outputs1× HDMI · 3× DisplayPort
- Warranty (typical new)24 mo
3-year electricity model
Over 3 years at 4h/day and $0.15/kWh, Arc B570 (150 W) adds about $49 in modeled electricity and Arc B580 (190 W) about $62. The modeled difference is roughly $13. This uses rated power as a common comparison input, not a promise of wall-power consumption.
06 · Specifications
Key specifications
Reference-GPU fields and representative-offer fields are labelled separately. Directional checkmarks appear only where more or less has a clear meaning; they are not an overall verdict.
| Specification | Arc B570 | Arc B580 |
|---|---|---|
| Architecture | Xe2-HPG | Xe2-HPG |
| VRAM | 10 GB | 12 GB✓ |
| Memory type | GDDR6 | GDDR6 |
| Memory bus | 160-bit | 192-bit✓ |
| Host interface | PCIe 4.0 x8 | PCIe 4.0 x8 |
| Boost clock | 2,600 MHz | 2,740 MHz |
| Board power (lower is better) | 150 W✓ | 190 W |
| Suggested PSU (representative offer) | 450 W | 450 W |
| Power connectors (representative offer) | 1x 8-pin | 1x 8-pin |
| Card length (representative offer) | 249 mm | 249 mm |
| Warranty (representative offer) | 24 mo | 24 mo |
| Current dataset offer · New | $260snapshot 2026-08-04✓ | $310snapshot 2026-08-04 |
Show additional verified specifications
| Specification | Arc B570 | Arc B580 |
|---|---|---|
| Process node | 5 nm | 5 nm |
| Base clock | 2,500 MHz | 2,670 MHz |
| Memory data rate | 19 Gbps | 19 Gbps |
| Expansion slots (representative offer) | 2-slot | 2-slot |
| Cooling fans (representative offer) | 2 | 2 |
| Display outputs (representative offer) | 1× HDMI · 3× DisplayPort | 1× HDMI · 3× DisplayPort |
| Cooling type (representative offer) | air | air |
“Not tracked” means the source data does not contain a verified value; no default or guessed specification is substituted.
07 · Customize
Try other models and your own priorities
Presets are starting points. Swap either side, then open Advanced weights only if you want to tune the formula directly.
08 · Alternative
A third option worth checking
The same scenario and market frame checks whether another currently priced model offers a cleaner trade-off.
No cleaner third option in this dataset
The scenario-aware check did not find a currently priced alternative that improves this decision without changing the trade-off. This is a dataset result, not a claim that no other product exists.
A price-aware third suggestion appears once today's offer snapshots are confirmed in your browser.
09 · Decision guide
Choose based on the trade-off you actually want
These are evidence-linked conditions, not universal buying verdicts. Feature ecosystems, software support and platform preferences remain your call.
Choose A · Arc B570 if…
- Lower rated power matters: 150 W versus 190 W for Arc B580.
- You can find it at or below its Strong Value threshold of $238 under balanced weights.
Choose B · Arc B580 if…
- You prioritize 1080p Gaming, 1440p Gaming, 4K / VR — it earns the higher capability tier in those tracked scenarios.
- Your priorities resemble 1440p Sweet Spot, 4K Ultra / VR — it has higher Relative Value under those presets at the snapshot offers.
- You can find it at or below its Strong Value threshold of $306 under balanced weights.
10 · Methodology & FAQ
Read the methodology →How to read this comparison
The formula is a weighted geometric ratio. Capability, price and user priorities stay visible as separate inputs so the result can be challenged and changed.
- Which is better value right now: Arc B570 or Arc B580?
- Under the balanced preset and the 2026-08-04 offer frame, they are practically even in Relative Value (76 vs 79). Change the preset or weights to reflect your own priorities; capability is a separate question, answered by the tier table.
- Which one is more capable, ignoring price?
- Arc B580 grades higher in 5 of 7 graded scenarios (2 tied) and is never graded lower.
- Where can I compare current offers for both?
- Dated offer snapshots for both models are listed on their product pages (linked above); the interactive calculator recalculates both with your own weights and budget.
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Offer frame: 2026-08-04 · dataset generated 2026-08-04 · formula gpu-value-v1 · Value Score is an estimate based on our current dataset, selected weights, market prices and methodology — not an official product rating or a price forecast. Target prices are calculation thresholds, not predictions. Methodology · Report a data error