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Sapphire Nitro+ Radeon RX 6900 XT — RDNA 2 · 16 GB GDDR6 · 300 W · Nitro+
Sapphire

Sapphire Nitro+ Radeon RX 6900 XT

RDNA 2 · 16 GB GDDR6 · 300 W · Nitro+

82
/ 100
From $1,128
VS
GeForce RTX 4080 wins by 10
GeForce RTX 4080 — Ada · 16 GB GDDR6X · 320 W
NVIDIA

GeForce RTX 4080

Ada · 16 GB GDDR6X · 320 W

92
/ 100
From $1,199
Specdex verdict

GeForce RTX 4080 takes it — here’s why.

In our weighted Specdex score, Sapphire Nitro+ Radeon RX 6900 XT lands at 82 and GeForce RTX 4080 at 92. That puts GeForce RTX 4080 ahead by 10 points — a decisive margin driven mostly by its strengths in the categories below.

Pick Sapphire Nitro+ Radeon RX 6900 XT if…

  • ✓More VRAM at price tier
  • ✓FSR support
  • ✓Driver open-source on Linux

Pick GeForce RTX 4080 if…

  • ✓NVIDIA driver stack
  • ✓DLSS support on RTX
  • ✓Strong resale value
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Winner by scenario

Derived from the sub-score breakdown · not a separate test

4K & rasterization

GeForce RTX 4080

Traditional rendering throughput at high resolution

GeForce RTX 4080 leads on raster (92 vs 82).

Ray tracing

GeForce RTX 4080

RT-heavy titles with path-traced lighting

GeForce RTX 4080 leads on rt (87 vs 72).

AI workloads

GeForce RTX 4080

Local inference, upscaling, generative tools

GeForce RTX 4080 leads on ai (89 vs 67).

Power efficiency

Sapphire Nitro+ Radeon RX 6900 XT

Frames per watt — heat, noise, and PSU sizing

Sapphire Nitro+ Radeon RX 6900 XT leads on efficiency (76 vs 73).

Value for money

Tie

Specdex score per dollar at MSRP

Effectively tied — similar score-per-dollar at MSRP.

Sapphire Nitro+ Radeon RX 6900 XT 82
vs
92 GeForce RTX 4080

Score breakdown

Sapphire Nitro+ Radeon RX 6900 XT
82
raster 82
rt 72
ai 67
efficiency 76
GeForce RTX 4080
92
raster 92
rt 87
ai 89
efficiency 73

Specs side-by-side

Sapphire Nitro+ Radeon RX 6900 XT versus GeForce RTX 4080 — full spec comparison
Spec Sapphire Nitro+ Radeon RX 6900 XT GeForce RTX 4080
Architecture
RDNA 2
Ada
VRAM
16 GB GDDR6
16 GB GDDR6X
TBP
300 W
320 W
Release year
2020
2022

Sapphire Nitro+ Radeon RX 6900 XT

Pros
  • +More VRAM at price tier
  • +FSR support
  • +Driver open-source on Linux
Cons
  • −RT trails NVIDIA
  • −AI ecosystem smaller
  • −Driver day-0 bugs

GeForce RTX 4080

Pros
  • +NVIDIA driver stack
  • +DLSS support on RTX
  • +Strong resale value
Cons
  • −Power draw scales with tier
  • −Gen-over-gen price creep
  • −VRAM gated per tier

FAQ: Sapphire Nitro+ Radeon RX 6900 XT vs GeForce RTX 4080

Which is better, Sapphire Nitro+ Radeon RX 6900 XT or GeForce RTX 4080? +

GeForce RTX 4080 scores 92 on our weighted rubric — ahead by 10. Your best pick depends on the sub-scores above.

Is Sapphire Nitro+ Radeon RX 6900 XT worth the price? +

At $1,128, Sapphire Nitro+ Radeon RX 6900 XT delivers a Specdex score of 82 — strongest in raster.

Is GeForce RTX 4080 worth the price? +

At $1,199, GeForce RTX 4080 delivers a Specdex score of 92 — strongest in raster.

Does Sapphire Nitro+ Radeon RX 6900 XT or GeForce RTX 4080 last longer? +

Based on our long-term update and support ratings, both ship with multi-year support. Battery and reliability scores are visible in the breakdown above.

Which is better for 4K gaming, Sapphire Nitro+ Radeon RX 6900 XT or GeForce RTX 4080? +

GeForce RTX 4080 — leads on raster (92 vs 82). Traditional rendering throughput at high resolution.

Which is better for ray tracing, Sapphire Nitro+ Radeon RX 6900 XT or GeForce RTX 4080? +

GeForce RTX 4080 — leads on rt (87 vs 72). RT-heavy titles with path-traced lighting.