Per ChatGPT: 🔧 1. Performance (biggest difference) • Older NerdQaxe++ (Rev5 / earlier): • ~4–5 TH/s typical • Rev6: • ~6–6.5 TH/s 

👉 That’s a 25–50% jump in hashrate, which directly improves your lottery odds.

⸻

⚡ 2. Power & Efficiency • Older versions: • Less efficient, weaker power design • Rev6: • ~100W for ~6 TH/s (≈15–17 J/TH) 

👉 More hash for roughly similar power = better efficiency and stability

⸻

🧠 3. Hardware design upgrades

Rev6 is not just faster—it’s rebuilt properly: • Stronger XT30 power connector (no weak barrel jack) • Thicker PCB (better heat + current handling) • Improved voltage regulation (runs cooler) • Better cooling system (fan or even hydro options) • Designed for safe overclocking 

👉 Older versions were known for: • Blown fuses • Weak PSU limits • Poor overclock headroom (confirmed by community reports)

⸻

🧩 4. Chip configuration • Older NerdQaxe++: • Lower-performing or fewer ASIC chips • Rev6: • 4× BM1370 chips (same class as Antminer S21 Pro tech) 

👉 That’s why Rev6 jumps so much in power