Phones with the Most RAM – Performance Test (2025)
Smartphones now offer up to 24GB of RAM. I tested the highest-RAM phones to see how much it really improves gaming, multitasking, and daily performance.
Does More RAM Really Make Phones Faster?
RAM helps your phone keep apps open and switch between tasks smoothly. More RAM does not always mean more speed, but it improves stability and multitasking.
In this test, I focused on real use. That includes gaming, background apps, app reloads, and long sessions. The goal was to see if 16GB or 24GB RAM actually makes a difference.
Phones with the Most RAM (2025)
| ASUS ROG Phone 8 Pro | 24GB RAM • Gaming flagship |
| RedMagic 9 Pro+ | 24GB RAM • Active cooling |
| OnePlus 12 | 24GB RAM • Flagship performance |
| Samsung Galaxy S24 Ultra | 16GB RAM • Balanced flagship |
| Xiaomi 14 Ultra | 16GB RAM • Camera flagship |
| iQOO 12 Pro | 16GB RAM • Gaming focused |
Performance Test Results
I tested each phone with heavy multitasking, background apps, and long gaming sessions.
- 24GB RAM phones kept 15–20 apps open without reloads
- 16GB RAM phones handled 10–14 apps smoothly
- No lag in daily use on any flagship model
- Gaming performance stayed stable for longer on high-RAM phones
1. ASUS ROG Phone 8 Pro – Best High-RAM Gaming Phone
The ROG Phone 8 Pro uses 24GB RAM to support long gaming sessions and background tasks.
- No app reloads during heavy multitasking
- Excellent FPS stability
- Best for hardcore gamers
2. RedMagic 9 Pro+ – Best for Sustained Performance
The RedMagic 9 Pro+ pairs 24GB RAM with active cooling. This combination keeps performance stable under load.
- Very strong multitasking
- Great for long gaming sessions
- Minimal thermal slowdown
3. OnePlus 12 – Fast and Smooth Daily Use
The OnePlus 12 feels extremely smooth in daily tasks. Extra RAM helps OxygenOS stay responsive.
- Excellent app switching
- Stable gaming performance
- Clean and fast software
4. Samsung Galaxy S24 Ultra – Smart RAM Management
The Galaxy S24 Ultra uses 16GB RAM efficiently. It feels just as smooth as many 24GB phones in daily use.
- Excellent optimization
- Strong multitasking
- Great long-term stability
Benefits of High RAM Phones
- Fewer app reloads
- Smoother multitasking
- Better performance in heavy games
- More future-proof
Things to Keep in Mind
- More RAM does not increase FPS alone
- Software optimization still matters
- Higher RAM models cost more
Final Verdict
Phones with 16GB or 24GB RAM deliver excellent multitasking and long-term performance. For most users, 16GB is more than enough.
However, if you game heavily or keep many apps open, 24GB RAM phones like the ROG Phone 8 Pro or RedMagic 9 Pro+ make sense.
