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AMD Radeon RX 6900 XT vs NVIDIA Gainward Phoenix GeForce RTX 3090: Comparison
AMD Radeon RX 6900 XT vs NVIDIA Gainward Phoenix GeForce RTX 3090: the vram difference
The gap that matters here is vram: AMD Radeon RX 6900 XT 16 GB against NVIDIA Gainward Phoenix GeForce RTX 3090 24 GB, which puts NVIDIA Gainward Phoenix GeForce RTX 3090 33% ahead. Measured rather than claimed: in Blender Cycles (GPU) the NVIDIA Gainward Phoenix GeForce RTX 3090 returns 5,412 against 2,603 over 629 runs, a 52% lead. Add boost clock to that, 2250 MHz on the AMD Radeon RX 6900 XT versus 1740 MHz on the NVIDIA Gainward Phoenix GeForce RTX 3090, and the pattern holds.
Which should you buy, AMD Radeon RX 6900 XT or NVIDIA Gainward Phoenix GeForce RTX 3090?
The AMD Radeon RX 6900 XT suits gamers targeting the resolution this flagship tier is built for, though it is not built for 4K/high-refresh gamers if this card's tier sits below High-End. It also earns its place with builders who want 16GB of VRAM without moving up a tier. Avoid it for buyers who need the absolute best price-to-performance and should compare street prices first. Buy the NVIDIA Gainward Phoenix GeForce RTX 3090 for gamers targeting the resolution this flagship tier is built for, though it is not the pick for 4K/high-refresh gamers if this card's tier sits below High-End. The same goes for builders who want 24GB of VRAM without moving up a tier. It is not the one for buyers who need the absolute best price-to-performance and should compare street prices first.
Which is cheaper, AMD Radeon RX 6900 XT or NVIDIA Gainward Phoenix GeForce RTX 3090?
Cost splits them too. AMD Radeon RX 6900 XT sits at $999, NVIDIA Gainward Phoenix GeForce RTX 3090 at $1,499, 50% more.
Frequently asked questions
Do the AMD Radeon RX 6900 XT and NVIDIA Gainward Phoenix GeForce RTX 3090 differ on tdp?
Yes. TDP reads 300 W on the AMD Radeon RX 6900 XT versus 350 W on the NVIDIA Gainward Phoenix GeForce RTX 3090.
Is the Ray Tracing Support the same on the AMD Radeon RX 6900 XT and NVIDIA Gainward Phoenix GeForce RTX 3090?
It is. Both are listed at Yes, so it is not a reason to pick one over the other.
Specs and benchmarks
GPU Brand
- AMD Radeon RX 6900 XT
- AMD
- NVIDIA Gainward Phoenix GeForce RTX 3090
- NVIDIA
Series
- AMD Radeon RX 6900 XT
- Radeon RX 6000
- NVIDIA Gainward Phoenix GeForce RTX 3090
- GeForce RTX 30
Board Partner
- AMD Radeon RX 6900 XT
- Reference
- NVIDIA Gainward Phoenix GeForce RTX 3090
- Gainward
VRAM
- AMD Radeon RX 6900 XT
- 16 GB-33%
- NVIDIA Gainward Phoenix GeForce RTX 3090
- 24 GBBest
Tier
- AMD Radeon RX 6900 XT
- Flagship
- NVIDIA Gainward Phoenix GeForce RTX 3090
- Flagship
Memory Type
- AMD Radeon RX 6900 XT
- GDDR6
- NVIDIA Gainward Phoenix GeForce RTX 3090
- GDDR6X
Boost Clock
- AMD Radeon RX 6900 XT
- 2250 MHzBest
- NVIDIA Gainward Phoenix GeForce RTX 3090
- 1740 MHz-23%
Ray Tracing Support
- AMD Radeon RX 6900 XT
- Yes
- NVIDIA Gainward Phoenix GeForce RTX 3090
- Yes
TDP
- AMD Radeon RX 6900 XT
- 300 WBest
- NVIDIA Gainward Phoenix GeForce RTX 3090
- 350 W-17%
Architecture
- AMD Radeon RX 6900 XT
- RDNA 2
- NVIDIA Gainward Phoenix GeForce RTX 3090
- Ampere (GA102)
Card Length
- AMD Radeon RX 6900 XT
- 267 mmBest
- NVIDIA Gainward Phoenix GeForce RTX 3090
- 320 mm-20%
Slot Width
- AMD Radeon RX 6900 XT
- 2.5Best
- NVIDIA Gainward Phoenix GeForce RTX 3090
- 3-20%
Shader Units
- AMD Radeon RX 6900 XT
- 5120
- NVIDIA Gainward Phoenix GeForce RTX 3090
- 10496
MSRP
- AMD Radeon RX 6900 XT
- $999
- NVIDIA Gainward Phoenix GeForce RTX 3090
- $1,499
Benchmarks
- 3D Rendering
Blender Cycles (GPU)
- AMD Radeon RX 6900 XT
- 2,603-52%
- NVIDIA Gainward Phoenix GeForce RTX 3090
- 5,412Best
Blender 4.5, Blender Open Data (CC0). Median of monster + junkshop + classroom, combined samples/min.
Renders a 3D scene on the graphics card. Shows speed in Blender and similar 3D apps, not in games.
Which one should you pick?
Choose AMD Radeon RX 6900 XT if you want the higher boost clock (2250 MHz vs 1740 MHz), the lower TDP (300 W vs 350 W) and the lower card length (267 mm vs 320 mm).
Choose NVIDIA Gainward Phoenix GeForce RTX 3090 if you want the higher VRAM (24 GB vs 16 GB) and the higher blender cycles (GPU) (5,412 vs 2,603).
Price comparison
| Retailer | AMD Radeon RX 6900 XT | NVIDIA Gainward Phoenix GeForce RTX 3090 |
|---|---|---|
| Consumercarts listing | $999.00 View on Consumercarts listing | $1,499.00 View on Consumercarts listing |
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Verdict
AMD Radeon RX 6900 XT
9 / 10 Expert Rating
A solid flagship pick if its price and 16GB VRAM allocation match your target resolution.
NVIDIA Gainward Phoenix GeForce RTX 3090
9 / 10 Expert Rating
A solid flagship pick if its price and 24GB VRAM allocation match your target resolution.