Relative Value41balanced preset
Arc A380 vs RX 6400 — value comparison
See current offers for Arc A380
Relative Value23balanced preset
Arc A380 shows higher Relative Value under balanced weights at the current dataset offers: 41 vs 23. The result crosses over if RX 6400 reaches about $104 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 A380 | RX 6400 |
|---|---|---|
| 1080p Gaming | D#62✓ | F#63 |
| 1440p Gaming | F#62 | F#63 |
| 4K / VR | F#62 | F#63 |
| Ray Tracing @ 2K (1440p) | F#57 | F#58 |
| AI / Local LLM | D#59✓ | F#63 |
| 3D Rendering | N/A | N/A |
| Light Use & Efficiency | S#4 | S#1 |
Arc A380 grades higher in 2 of 6 graded scenarios (4 tied) and is never graded lower. 1 scenario can't be graded for one of them (shown as N/A). 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
41 ✓
23
1080p Budgethigher relative value lit
52 ✓
25
1440p Sweet Spothigher relative value lit
18 ✓
9
4K Ultra / VRpractically even (≤3 pts)
5
3
Ray Tracing (1440p)higher relative value lit
15 ✓
7
AI / LLMpractically even (≤3 pts)
2
0
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 A380
- Current dataset offer · NewUS · USD · snapshot 2026-09-11
- $140
- Beats RX 6400 atbalanced weights; rival offer held fixed
- $326
- Strong Value at80+ Relative Value threshold
- $54
B · RX 6400
- Current dataset offer · NewUS · USD · snapshot 2026-09-11
- $242
- Beats Arc A380 atbalanced weights; rival offer held fixed
- $104
- Strong Value at80+ Relative Value threshold
- $40
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 A380
New · US · USDAmazon Affiliate
Check on AmazonB · RX 6400
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
165
140
140
Ray tracing
149
112
112
AI (FP16 tensor)
83
42
42
A · Arc A380B · RX 6400GPU indexes share one 1000-point scale (RTX 4070 = 1000).Arc A380 shows higher Value under every weighting we test — a stable result in the 2026-09-11 offer frame.
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 A380
- Representative offer variantASRock Arc A380 Challenger ITX OC
- Host interfacePCIe 4.0 x8
- Suggested PSU250 W
- Power connectors1x 8-pin
- Card length190 mm
- Expansion slots2-slot
- Coolingair
- Display outputs1× HDMI · 3× DisplayPort
- Warranty (typical new)24 mo
B · RX 6400
- Representative offer variantSapphire PULSE RX 6400
- Host interfacePCIe 4.0 x4
- Suggested PSU250 W
- Power connectorsNone
- Card length170 mm
- Expansion slots1-slot
- Coolingair
- Display outputs1× HDMI · 1× DisplayPort
- Warranty (typical new)24 mo
3-year electricity model
Over 3 years at 4h/day and $0.15/kWh, Arc A380 (75 W) adds about $25 in modeled electricity and RX 6400 (55 W) about $18. The modeled difference is roughly $7. 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 A380 | RX 6400 |
|---|---|---|
| Architecture | Xe-HPG | RDNA 2.0 |
| VRAM | 6 GB✓ | 4 GB |
| Memory type | GDDR6 | GDDR6 |
| Memory bus | 96-bit✓ | 64-bit |
| Host interface | PCIe 4.0 x8 | PCIe 4.0 x4 |
| Boost clock | 2,250 MHz | 2,321 MHz |
| Board power (lower is better) | 75 W | 55 W✓ |
| Suggested PSU (representative offer) | 250 W | 250 W |
| Power connectors (representative offer) | 1x 8-pin | None |
| Card length (representative offer) | 190 mm | 170 mm✓ |
| Warranty (representative offer) | 24 mo | 24 mo |
| Current dataset offer · New | $140snapshot 2026-09-11✓ | $242snapshot 2026-09-11 |
Show additional verified specifications
| Specification | Arc A380 | RX 6400 |
|---|---|---|
| Process node | 6 nm | 6 nm |
| Base clock | 2,250 MHz | 1,923 MHz |
| Memory data rate | 15.5 Gbps | 16 Gbps |
| Expansion slots (representative offer) | 2-slot | 1-slot✓ |
| Cooling fans (representative offer) | 2 | 2 |
| Display outputs (representative offer) | 1× HDMI · 3× DisplayPort | 1× HDMI · 1× 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 A380 if…
- You prioritize 1080p Gaming, AI / Local LLM — 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.
- You can find it at or below its Strong Value threshold of $54 under balanced weights.
Choose B · RX 6400 if…
- Lower rated power matters: 55 W versus 75 W for Arc A380.
- You can find it at or below its Strong Value threshold of $40 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 A380 or RX 6400?
- Under the balanced preset and the 2026-09-11 offer frame, Arc A380 has higher Relative Value under this configuration (41 vs 23). 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?
- Arc A380 grades higher in 2 of 6 graded scenarios (4 tied) and is never graded lower. 1 scenario can't be graded for one of them (shown as N/A).
- At what price does the RX 6400 become the better value?
- Holding the Arc A380 offer dated in the 2026-09-11 frame fixed, the calculation flips in favour of the RX 6400 at roughly $104 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