Relative Value65balanced preset
RTX 4090 vs RTX 5080 — value comparison
See current offers for RTX 4090
Relative Value66balanced preset
RTX 4090 and RTX 5080 are practically even under balanced weights at the current dataset offers: 65 vs 66. Change the preset or your priorities before deciding.
Price data · Canada · CAD · New · A 2026-09-27 · B 2026-09-27Coverage · 20 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 | RTX 4090 | RTX 5080 |
|---|---|---|
| 1080p Gaming | S#3 | S#4 |
| 1440p Gaming | S#3 | S#4 |
| 4K / VR | S#3 | S#4 |
| Ray Tracing @ 2K (1440p) | N/A | A#1 |
| AI / Local LLM | S#3✓ | A#4 |
| 3D Rendering | S#2 | S#3 |
| Light Use & Efficiency | D#22 | D#21 |
RTX 4090 grades higher in 1 of 6 graded scenarios (5 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 2026-09-27 offer frame. How tiers are assigned →
Relative Value by priority
Balancedpractically even (≤3 pts)
65
66
1080p Budgethigher relative value lit
46
51 ✓
1440p Sweet Spotpractically even (≤3 pts)
71
68
4K Ultra / VRhigher relative value lit
84 ✓
71
Ray Tracing (1440p)practically even (≤3 pts)
72
73
AI / LLMhigher relative value lit
73 ✓
44
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 · RTX 4090
- Current dataset offer · NewCanada · CAD · snapshot 2026-09-27
- CAD 2640
- Beats RTX 5080 atbalanced weights; rival offer held fixed
- CAD 2574
- Strong Value at80+ Relative Value threshold
- CAD 1949
B · RTX 5080
- Current dataset offer · NewCanada · CAD · snapshot 2026-09-27
- CAD 2230
- Beats RTX 4090 atbalanced weights; rival offer held fixed
- CAD 2287
- Strong Value at80+ Relative Value threshold
- CAD 1688
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 · RTX 4090
New · Canada · CADB · RTX 5080
New · Canada · CAD05 · 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
1962
1689
1689
Ray tracing
2037
1824
1824
AI (FP16 tensor)
2833
1931
1931
A · RTX 4090B · RTX 5080GPU indexes share one 1000-point scale (RTX 4070 = 1000).The Value leader depends on how you weight things: RTX 4090 leads under 2 presets, RTX 5080 under 1, 3 practically even.
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 · RTX 4090
- Representative offer variantASUS ROG STRIX RTX 4090 GAMING
- Host interfacePCIe 4.0 x16
- Suggested PSU850 W
- Power connectors1x 16-pin
- Card length358 mm
- Expansion slots4-slot
- Coolingair
- Display outputs2× HDMI · 3× DisplayPort
- Warranty (typical new)36 mo
B · RTX 5080
- Representative offer variantASUS PRIME RTX 5080
- Host interfacePCIe 5.0 x16
- Suggested PSU750 W
- Power connectors1x 16-pin
- Card length306 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 CAD 0.18/kWh, RTX 4090 (450 W) adds about CAD 177 in modeled electricity and RTX 5080 (360 W) about CAD 142. The modeled difference is roughly CAD 35. 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 | RTX 4090 | RTX 5080 |
|---|---|---|
| Architecture | Ada Lovelace | Blackwell 2.0 |
| VRAM | 24 GB✓ | 16 GB |
| Memory type | GDDR6X | GDDR7 |
| Memory bus | 384-bit✓ | 256-bit |
| Host interface | PCIe 4.0 x16 | PCIe 5.0 x16 |
| Boost clock | 2,520 MHz | 2,617 MHz |
| Board power (lower is better) | 450 W | 360 W✓ |
| Suggested PSU (representative offer) | 850 W | 750 W |
| Power connectors (representative offer) | 1x 16-pin | 1x 16-pin |
| Card length (representative offer) | 358 mm | 306 mm✓ |
| Warranty (representative offer) | 36 mo | 36 mo |
| Current dataset offer · New | CAD 2640snapshot 2026-09-27 | CAD 2230snapshot 2026-09-27✓ |
Show additional verified specifications
| Specification | RTX 4090 | RTX 5080 |
|---|---|---|
| Process node | 5 nm | 5 nm |
| Base clock | 2,235 MHz | 2,295 MHz |
| Memory data rate | 21 Gbps | 30 Gbps |
| Expansion slots (representative offer) | 4-slot | 2-slot✓ |
| Cooling fans (representative offer) | 3 | 3 |
| Display outputs (representative offer) | 2× 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 · RTX 4090 if…
- You prioritize AI / Local LLM — it earns the higher capability tier in those tracked scenarios.
- Your priorities resemble 4K Ultra / VR, 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 CAD 1949 under balanced weights.
Choose B · RTX 5080 if…
- Your priorities resemble 1080p Budget — it has higher Relative Value under those presets at the snapshot offers.
- Lower rated power matters: 360 W versus 450 W for RTX 4090.
- You can find it at or below its Strong Value threshold of CAD 1688 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: RTX 4090 or RTX 5080?
- Under the balanced preset and the 2026-09-27 offer frame, they are practically even in Relative Value (65 vs 66). 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?
- RTX 4090 grades higher in 1 of 6 graded scenarios (5 tied) and is never graded lower. 1 scenario can't be graded for one of them (shown as N/A).
- 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: 2026-09-27 · dataset generated 2026-09-27 · 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