Samsung Galaxy Z Fold 5 vs Vivo X300 Ultra

Samsung Galaxy Z Fold 5

Bespoke Snapdragon 8 Gen 2 for Galaxy (3.36GHz) with 12GB RAM — the same chip as the S23 family. Flagship-grade performance with much better efficiency than the Fold 4's 8+ Gen 1.

• Snapdragon 8 Gen 2 for Galaxy at 3.36GHz + 12GB RAM + 256GB base UFS 4.0 — same chip as the S23 Ultra in a foldable.
• 8 Gen 2 power savings, better AI/CPU/GPU efficiency, faster RAM and UFS — meaningful step up from the Fold 4's 8+ Gen 1.
• Two years on (2025), the chip is 'still very powerful' — handles One UI 7's AI features and demanding apps without issue.
• Forbes verdict: 'still a flagship chip — the best in Android — just not as special as Samsung marketing would have you think'.

Vivo X300 Ultra

Snapdragon 8 Elite Gen 5 plus Vivo's custom imaging silicon delivers flagship benchmark numbers and strong gaming, but the camera-heavy hardware runs hot — sustained stress tests show roughly 60–65% stability and the camera app warms it up fast.

• At the heart is Qualcomm's current flagship Snapdragon 8 Elite Gen 5, supplemented by Vivo's custom VS1 and V3-Plus imaging chips.
• It boots in 16 seconds (vs 21s for the S26 Ultra and 19s for the iPhone 17 Pro Max) and posts an AnTuTu score over 3,800,000, stronger than Samsung.
• In a prolonged stress test it throttled CPU performance to about 60% of peak — in line with other high-powered flagships — and 3DMark stability landed around 63–66%.
• It gets a bit hot after 30–40 minutes of gaming, but with no throttling even past an hour and never uncomfortable to hold; boost mode at max graphics gives around 4 hours of Wuthering Waves on a full charge.
• Native 120fps gaming with smooth/very-high graphics in many titles, with temperature barely crossing 35°C and power draw around 4W in battle-royale modes.
• Under sustained camera/imaging load the front reached ~46.8°C and the back ~45.2°C, and around 47°C the refresh rate drops slightly though not all the way to 60Hz.

Samsung Galaxy Z Fold 5

4,400mAh — unchanged for five consecutive Fold generations. 8 Gen 2 efficiency stretches it to 4-5h of inner-screen SOT, but 25W charging is slow (~1.5h to full) and 4,400mAh is now well behind 2026 foldable rivals.

• 4,400mAh battery unchanged from the Fold 4 — and Samsung kept the same cell through the Fold 7 (a five-generation stretch).
• Real-world SOT on inner display: ~4 hours typical (one long-term owner). Power-save mode stretches to 2 full days for lighter users.
• Cross-generation drain shootout: Fold 5 finished 3rd at 4h32m17s — beaten by both the Fold 6 and Fold 7 thanks to chip-efficiency gains.
• 25W wired charging: ~1h-1.5h to full — slow next to the OnePlus 11's 80W or even the S23+'s 45W.
• 15W Qi wireless and reverse wireless supported — handy for topping up Galaxy Buds while traveling with the foldable.

Vivo X300 Ultra

Vivo grew the silicon-carbon cell 10% to 6,600mAh while keeping the body the same size. Real-world endurance is strong — ~16h active-use score, ~7h heavy screen-on, 13–14 hour days with charge to spare — and 100W wired refills it in under an hour, with 40W wireless.

• Vivo increased the battery by 10% to 6,600mAh despite the phone being practically the same size on paper.
• In our battery test it earned an active-use score of almost 16 hours; 100W charging took it 0–66% in 30 minutes and a full charge in 46 minutes, plus 40W wireless. A charger is in the box except in Europe.
• On the China version I'm finishing entire 13–14 hour days with 25–30% left; the global version keeps the 6,600mAh cell so battery life should comfortably last 12–13 hours of heavy use.
• Getting nearly 7 hours of screen-on time with very heavy usage from the 6,600mAh silicon-carbon unit, with 100W wired and 40W wireless charging support.
• After a 4-hour heavy-usage simulation the phone still had ~45% battery left, which is solid by today's standards, and 100W wired charging takes about 45 minutes to full.