Relative Value93balanced preset
Arc B580 vs RTX 3070 Ti — value comparison
See current offers for Arc B580
GA104
RTX 3070 Ti
Representative tracked offer: EVGA GeForce RTX 3070 Ti FTW3 ULTRA GAMING 8GB
8GB VRAMPerf: 820290W
Relative Value57balanced preset
Arc B580 shows higher Relative Value under balanced weights at the current dataset offers: 93 vs 57. The result crosses over if RTX 3070 Ti reaches about $287 or below.
Price data · US · USD · New · A 2026-09-11 · B 2026-09-11Coverage · 5 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.
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 B580 | RTX 3070 Ti |
|---|---|---|
| 1080p Gaming | A#41 | A#32 |
| 1440p Gaming | B#41 | B#32 |
| 4K / VR | D#41 | C#32✓ |
| Ray Tracing @ 2K (1440p) | D#34 | D#27 |
| AI / Local LLM | D#53 | C#29✓ |
| 3D Rendering | D#42 | C#24✓ |
| Light Use & Efficiency | B#28✓ | C#46 |
RTX 3070 Ti grades higher in 3 scenarios, Arc B580 in 1 (3 tied) — the lead is not across the board, so check the row that matches your use. These are the same S–F grades as the tier list — capability only, price excluded. The value rows below add prices from the 2026-09-11 offer frame. How tiers are assigned →
Relative Value by priority
Balancedhigher relative value lit
93 ✓
57
1080p Budgethigher relative value lit
98 ✓
53
1440p Sweet Spothigher relative value lit
72 ✓
42
4K Ultra / VRhigher relative value lit
36 ✓
23
Ray Tracing (1440p)higher relative value lit
70 ✓
34
AI / LLMhigher relative value lit
4
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.
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 B580
- Current dataset offer · NewUS · USD · snapshot 2026-09-11
- $310
- Beats RTX 3070 Ti atbalanced weights; rival offer held fixed
- $626
- Strong Value at80+ Relative Value threshold
- $385
B · RTX 3070 Ti
- Current dataset offer · NewUS · USD · snapshot 2026-09-11
- $579
- Beats Arc B580 atbalanced weights; rival offer held fixed
- $287
- Strong Value at80+ Relative Value threshold
- $356
04 · Where to buy
Current offers for both products
Dated New-condition price snapshots for only the two products in this comparison. Confirm the final price and availability at the store.
A · Arc B580
New · US · USDAmazon Affiliate
Check on AmazonB · RTX 3070 Ti
New · US · USDAmazon Affiliate
Check on Amazon05 · Capability
Capability indexes, side by side
Price is intentionally excluded here so the more capable product and the better-value product cannot be confused.
Raster performance
660
820
820
Ray tracing
695
669
669
AI (FP16 tensor)
117
746
746
A · Arc B580B · RTX 3070 TiGPU indexes share one 1000-point scale (RTX 4070 = 1000).The Value leader depends on how you weight things: Arc B580 leads under 5 presets, RTX 3070 Ti under 1.
06 · Platform & ownership
Fit, compatibility 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 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
B · RTX 3070 Ti
- Representative offer variantEVGA GeForce RTX 3070 Ti FTW3 ULTRA GAMING 8GB
- Host interfacePCIe 4.0 x16
- Suggested PSU600 W
- Power connectors1x 12-pin
- Card length267 mm
- Expansion slots2-slot
- Coolingair
- Display outputs1× HDMI · 3× DisplayPort
- Warranty (typical new)36 mo
3-year electricity model
Over 3 years at 4h/day and $0.15/kWh, Arc B580 (190 W) adds about $62 in modeled electricity and RTX 3070 Ti (290 W) about $95. The modeled difference is roughly $33. This uses rated power as a common comparison input, not a promise of wall-power consumption.
07 · 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 B580 | RTX 3070 Ti |
|---|---|---|
| Architecture | Xe2-HPG | Ampere |
| VRAM | 12 GB✓ | 8 GB |
| Memory type | GDDR6 | GDDR6X |
| Memory bus | 192-bit | 256-bit✓ |
| Host interface | PCIe 4.0 x8 | PCIe 4.0 x16 |
| Boost clock | 2,740 MHz | 1,770 MHz |
| Board power (lower is better) | 190 W✓ | 290 W |
| Suggested PSU (representative offer) | 450 W | 600 W |
| Power connectors (representative offer) | 1x 8-pin | 1x 12-pin |
| Card length (representative offer) | 249 mm✓ | 267 mm |
| Warranty (representative offer) | 24 mo | 36 mo✓ |
| Current dataset offer · New | $310snapshot 2026-09-11✓ | $579snapshot 2026-09-11 |
Show additional verified specifications
| Specification | Arc B580 | RTX 3070 Ti |
|---|---|---|
| Process node | 5 nm | 8 nm |
| Base clock | 2,670 MHz | 1,575 MHz |
| Memory data rate | 19 Gbps | 19 Gbps |
| Expansion slots (representative offer) | 2-slot | 2-slot |
| Cooling fans (representative offer) | 2 | 3 |
| 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.
08 · 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.
09 · 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.
10 · 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 B580 if…
- You prioritize Light Use & Efficiency — it earns the higher capability tier in those tracked scenarios.
- Your priorities resemble Balanced, 1080p Budget, 1440p Sweet Spot — it has higher Relative Value under those presets at the snapshot offers.
- Lower rated power matters: 190 W versus 290 W for RTX 3070 Ti.
- You can find it at or below its Strong Value threshold of $385 under balanced weights.
Choose B · RTX 3070 Ti if…
- You prioritize 4K / VR, AI / Local LLM, 3D Rendering — it earns the higher capability tier in those tracked scenarios.
- Your priorities resemble AI / LLM — it has higher Relative Value under those presets at the snapshot offers.
- You can find it at or below its Strong Value threshold of $356 under balanced weights.
11 · Methodology & FAQ
Read the methodology →How to read this comparison
The formula is a linear weighted sum inside the current comparison frame. 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 B580 or RTX 3070 Ti?
- Under the balanced preset and the 2026-09-11 offer frame, Arc B580 has higher Relative Value under this configuration (93 vs 57). Value is price-dependent and moves with your weighting; capability is a separate question, answered by the tier table.
- Which one is more capable, ignoring price?
- RTX 3070 Ti grades higher in 3 scenarios, Arc B580 in 1 (3 tied) — the lead is not across the board, so check the row that matches your use.
- At what price does the RTX 3070 Ti become the better value?
- Holding the Arc B580 offer dated in the 2026-09-11 frame fixed, the calculation flips in favour of the RTX 3070 Ti at roughly $287 or below (balanced preset). Not a price forecast.
- 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: 2026-09-11 · dataset generated 2026-09-11 · formula gpu-value-v1.4-benefit-cost-product · 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