Navi 31
RX 7900 XT
Representative tracked offer: Sapphire PURE Radeon RX 7900 XT 20GB OC
20GB VRAMPerf: 900315W
Relative Value54balanced preset
RX 7900 XT vs RTX 3090 — value comparison
Relative Value38balanced preset
RX 7900 XT shows higher Relative Value under balanced weights at the current dataset offers: 54 vs 38. The result crosses over if RTX 3090 reaches about $901 or below.
Price data · US · USD · New · A 2026-08-13 · B 2026-08-13Coverage · 18 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 | RX 7900 XT | RTX 3090 |
|---|---|---|
| 1080p Gaming | S#21 | S#16 |
| 1440p Gaming | B#22 | A#16✓ |
| 4K / VR | C#22 | C#16 |
| Ray Tracing @ 2K (1440p) | C#16 | B#13✓ |
| AI / Local LLM | B#24 | A#10✓ |
| 3D Rendering | C#22 | B#15✓ |
| Light Use & Efficiency | D#51 | D#57 |
RTX 3090 grades higher in 4 of 7 graded scenarios (3 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 2026-08-13 offer frame. How tiers are assigned →
Relative Value by priority
Balancedhigher relative value lit
54 ✓
38
1080p Budgethigher relative value lit
50 ✓
30
1440p Sweet Spothigher relative value lit
53 ✓
46
4K Ultra / VRhigher relative value lit
26
30 ✓
Ray Tracing (1440p)practically even (≤3 pts)
27
30
AI / LLMpractically even (≤3 pts)
38
41
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 · RX 7900 XT
- Current dataset offer · NewUS · USD · snapshot 2026-08-13
- $899
- Beats RTX 3090 atbalanced weights; rival offer held fixed
- $1596
- Strong Value at80+ Relative Value threshold
- $481
B · RTX 3090
- Current dataset offer · NewUS · USD · snapshot 2026-08-13
- Check current price on Amazon
- Beats RX 7900 XT atbalanced weights; rival offer held fixed
- $901
- Strong Value at80+ Relative Value threshold
- $482
04 · 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
900
950
950
Ray tracing
700
950
950
AI (FP16 tensor)
750
1050
1050
A · RX 7900 XTB · RTX 3090GPU indexes share one 1000-point scale (RTX 4070 = 1000).The Value leader depends on how you weight things: RX 7900 XT leads under 3 presets, RTX 3090 under 1, 2 practically even.
05 · 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 · RX 7900 XT
- Representative offer variantSapphire PURE Radeon RX 7900 XT 20GB OC
- Host interfacePCIe 4.0 x16
- Suggested PSU700 W
- Power connectors2x 8-pin
- Card length276 mm
- Expansion slots2-slot
- Coolingair
- Display outputs1× HDMI · 2× DisplayPort · 1× USB-C
- Warranty (typical new)24 mo
B · RTX 3090
- Representative offer variantEVGA RTX 3090 FTW3 ULTRA
- Host interfacePCIe 4.0 x16
- Suggested PSU750 W
- Power connectors3x 8-pin
- Card length300 mm
- Expansion slots3-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, RX 7900 XT (315 W) adds about $103 in modeled electricity and RTX 3090 (350 W) about $115. The modeled difference is roughly $12. 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 | RX 7900 XT | RTX 3090 |
|---|---|---|
| Architecture | RDNA 3.0 | Ampere |
| VRAM | 20 GB | 24 GB✓ |
| Memory type | GDDR6 | GDDR6X |
| Memory bus | 320-bit | 384-bit✓ |
| Host interface | PCIe 4.0 x16 | PCIe 4.0 x16 |
| Boost clock | 2,394 MHz | 1,800 MHz |
| Board power (lower is better) | 315 W✓ | 350 W |
| Suggested PSU (representative offer) | 700 W | 750 W |
| Power connectors (representative offer) | 2x 8-pin | 3x 8-pin |
| Card length (representative offer) | 276 mm✓ | 300 mm |
| Warranty (representative offer) | 24 mo | 36 mo✓ |
| Current dataset offer · New | $899snapshot 2026-08-13 | Check current price on Amazonsnapshot 2026-08-13 |
Show additional verified specifications
| Specification | RX 7900 XT | RTX 3090 |
|---|---|---|
| Process node | 5 nm | 8 nm |
| Base clock | 1,387 MHz | 1,395 MHz |
| Memory data rate | 20 Gbps | 19.5 Gbps |
| Expansion slots (representative offer) | 2-slot✓ | 3-slot |
| Cooling fans (representative offer) | 3 | 3 |
| Display outputs (representative offer) | 1× HDMI · 2× DisplayPort · 1× USB-C | 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.
Worth considering instead
RX 9070 XT — same S-tier capability for 1080p Gaming, about $169 cheaper · Value 86.
Neither of the two above is the only answer — this one clears the same bar for less. ⇄ Compare all three
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 · RX 7900 XT if…
- 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: 315 W versus 350 W for RTX 3090.
- You can find it at or below its Strong Value threshold of $481 under balanced weights.
Choose B · RTX 3090 if…
- You prioritize 1440p Gaming, Ray Tracing, AI / Local LLM — it earns the higher capability tier in those tracked scenarios.
- Your priorities resemble 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 $482 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: RX 7900 XT or RTX 3090?
- Under the balanced preset and the 2026-08-13 offer frame, RX 7900 XT has higher Relative Value under this configuration (54 vs 38). 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 3090 grades higher in 4 of 7 graded scenarios (3 tied) and is never graded lower.
- At what price does the RTX 3090 become the better value?
- Holding the RX 7900 XT offer dated in the 2026-08-13 frame fixed, the calculation flips in favour of the RTX 3090 at roughly $901 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: 2026-08-13 · dataset generated 2026-08-13 · 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