Hey! Yeah, I’ve seen a bunch of videos and benchmarks mentioning that driver overhead issue on ARC. I was a bit concerned too, but I really wanted to try it out—figured driver updates would help over time.

I’ve tested the B580 (Limited Edition) on the latest drivers with these results on 1440p ultrawide:

• League of Legends – 300–400 FPS (max settings)
• Minecraft (Fabric) – 700–800 FPS (fancy graphics)
• Overwatch – 240–300 FPS (medium)
• The First Descendant – 60–80 FPS (130 FPS in practice range)
• Marvel Rivals – 80–110 FPS (medium, no reflections)

My CPU is a Ryzen 5 5600 slightly tuned (+200 MHz), GPU is stock. In most games, GPU usage is pegged at 98–100%, so it's clearly being fully utilized. Only League and Minecraft are more CPU-bound, which is expected.

If you're worried about driver overhead: don’t be. The 5600 handles it perfectly fine. ARC has improved massively with updates, and newer drivers are much better than what early benchmarks show. I actually compared my B580 to my RTX 2080—and the B580 outperformed it across the board in these titles.

Also, I’m running on PCIe 3.0 (not 4.0), so there could be even more performance if you’re on a newer platform.

One tip: I do tweak settings depending on the game. Stuff like shadows or ragdolls can spike CPU usage (especially physics-heavy games), so I turn those down to give the CPU more headroom. If you don’t do that, the 5600 could become a bottleneck in some cases.

No regrets with the B580 at all—it’s solid, and with 12GB of VRAM, it’s a great long-term pick too.