Skip to content
Specdex
Compare now
Radeon RX 580 8GB — Polaris · 8 GB GDDR5 · 185 W
AMD

Radeon RX 580 8GB

Polaris · 8 GB GDDR5 · 185 W

52
/ 100
From $229
VS
GeForce RTX 5090 wins by 46
GeForce RTX 5090 — Blackwell · 32 GB GDDR7 · 575 W
NVIDIA

GeForce RTX 5090

Blackwell · 32 GB GDDR7 · 575 W

98
/ 100
From $1,999
Specdex verdict

GeForce RTX 5090 takes it — here’s why.

In our weighted Specdex score, Radeon RX 580 8GB lands at 52 and GeForce RTX 5090 at 98. That puts GeForce RTX 5090 ahead by 46 points — a decisive margin driven mostly by its strengths in the categories below.

Pick Radeon RX 580 8GB if…

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

Pick GeForce RTX 5090 if…

  • Unrivaled 4K and path-tracing
  • DLSS 4 Multi-Frame Gen
  • 32 GB VRAM for AI
Radeon RX 580 8GB 52
vs
98 GeForce RTX 5090

Score breakdown

Radeon RX 580 8GB
52
raster 52
rt 42
ai 40
efficiency 74
GeForce RTX 5090
98
raster 100
rt 100
ai 100
efficiency 78

Specs side-by-side

Radeon RX 580 8GB versus GeForce RTX 5090 — full spec comparison
Spec Radeon RX 580 8GB GeForce RTX 5090
Architecture
Polaris
Blackwell
VRAM
8 GB GDDR5
32 GB GDDR7
TBP
185 W
575 W
Release year
2017
CUDA cores
21,760
Tensor cores
680 (5th gen)
RT cores
170 (4th gen)
Memory bus
512-bit
Bandwidth
1792 GB/s
PCIe
PCIe 5.0 x16

Radeon RX 580 8GB

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 5090

Pros
  • +Unrivaled 4K and path-tracing
  • +DLSS 4 Multi-Frame Gen
  • +32 GB VRAM for AI
Cons
  • Enormous power draw
  • Two-slot+ cooler required
  • Scarce MSRP supply

FAQ: Radeon RX 580 8GB vs GeForce RTX 5090

Which is better, Radeon RX 580 8GB or GeForce RTX 5090? +

GeForce RTX 5090 scores 98 on our weighted rubric — ahead by 46. Your best pick depends on the sub-scores above.

Is Radeon RX 580 8GB worth the price? +

At $229, Radeon RX 580 8GB delivers a Specdex score of 52 — strongest in efficiency.

Is GeForce RTX 5090 worth the price? +

At $1,999, GeForce RTX 5090 delivers a Specdex score of 98 — strongest in raster.

Does Radeon RX 580 8GB or GeForce RTX 5090 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.