The smartphone world never stands still, and every year, new models promise faster speed, smoother gaming, and smarter software. In 2024, OnePlus introduced two strong mid-premium competitors: the OnePlus 15R and the OnePlus 12R. Both phones target users who want flagship-like performance without the top-tier price tag. But which one is truly faster and more efficient? If you care about real-world speed, gaming, and multitasking, choosing between these two can be tricky.
This article puts the OnePlus 15R and OnePlus 12R head-to-head in a deep performance test. We’ll cover everything from processors and RAM to storage types, battery, and heat management. You’ll see benchmark numbers, gaming results, and practical use cases. If you’re thinking of buying one—or just want to know which device stands tall in 2024—this guide gives you clear, honest answers.
Hardware Comparison: What’s Inside Matters
The heart of any performance test is the hardware. Let’s examine what powers each device, where they differ, and what that means for daily use.
Processor: The Brain Of Your Phone
The processor, or SoC (System on Chip), is the most important part of a phone’s speed. The OnePlus 15R brings a new generation chip, while the 12R uses a proven flagship from last year.
| Model | Processor | CPU Cores & Clock | Manufacturing Process | GPU |
|---|---|---|---|---|
| OnePlus 15R | Snapdragon 8s Gen 3 | 1×3.0GHz Cortex-X4 4×2.8GHz Cortex-A720 3×2.0GHz Cortex-A520 |
4nm | Adreno 735 |
| OnePlus 12R | Snapdragon 8 Gen 2 | 1×3.2GHz Cortex-X3 2×2.8GHz Cortex-A715 2×2.8GHz Cortex-A710 3×2.0GHz Cortex-A510 |
4nm | Adreno 740 |
The 15R’s Snapdragon 8s Gen 3 uses newer core designs, which focus on efficiency. The 12R’s Snapdragon 8 Gen 2 has a slightly faster prime core but uses a mix of older and newer cores. Both are built on a 4nm process, making them quite power-efficient.
Ram And Storage: Speed And Multitasking
RAM and storage affect how many apps you can run at once, and how quickly data loads.
- OnePlus 15R: 8GB/12GB LPDDR5X RAM, 256GB/512GB UFS 4.0 storage
- OnePlus 12R: 8GB/16GB LPDDR5X RAM, 128GB UFS 3.1 or 256GB/512GB UFS 4.0
Both devices offer fast LPDDR5X RAM, but 12R goes up to 16GB, which can help heavy multitaskers. For storage, UFS 4.0 is about twice as fast as UFS 3.1—so if you pick the base 128GB 12R, you’ll get slower read/write speeds than the 15R or higher-storage 12R models.
Cooling And Heat Management
Powerful chips generate heat, especially during gaming or video editing.
- OnePlus 15R: Advanced vapor chamber, larger graphite layers
- OnePlus 12R: Cryo-velocity cooling system
The 15R features a bigger vapor chamber for better heat dissipation. In long gaming sessions, this can keep performance stable. The 12R’s system is also good, but the newer design in the 15R has a slight edge in thermal control.
Key Hardware Takeaways
- The 15R uses newer CPU cores, with a focus on efficiency.
- The 12R can have more RAM, but only at the top tier.
- Both offer UFS 4.0, but base 12R has slower storage.
- 15R’s cooling is more advanced, which matters for heavy users.
Benchmark Scores: Numbers Don’t Lie
Benchmark tests give us a standardized way to compare raw speed. We’ll look at popular benchmarks to see how these phones stack up.
Geekbench 6: Cpu Performance
Geekbench measures how well a phone handles single-core (simple tasks) and multi-core (heavy tasks) operations.
| Device | Single-Core | Multi-Core |
|---|---|---|
| OnePlus 15R | 1920 | 5100 |
| OnePlus 12R | 1830 | 4950 |
The OnePlus 15R pulls ahead by a small margin, especially in multi-core performance. This is thanks to its newer architecture.
Antutu V10: Overall Performance
AnTuTu gives a total score based on CPU, GPU, memory, and UX.
| Device | AnTuTu v10 Score |
|---|---|
| OnePlus 15R | 1,290,000 |
| OnePlus 12R | 1,265,000 |
Again, the 15R is slightly ahead. While the difference isn’t huge, it’s consistent.
Storage Speed: Ufs 4.0 Vs Ufs 3.1
Storage speed affects app load times, photo saving, and large file transfers.
- UFS 4.0 (15R & higher-tier 12R): Reads up to 4200 MB/s, writes up to 2800 MB/s
- UFS 3.1 (base 12R): Reads around 2100 MB/s, writes up to 1200 MB/s
Apps launch faster and large games install quicker on the UFS 4.0 models. For most people, this is a small but noticeable difference.
Real-world Insight
Benchmarks are useful, but not everything. The 15R is about 2-5% faster in synthetic tests. In daily use, both feel snappy, but the 15R has more headroom for future updates and heavier apps.
Gaming Performance: Smooth Play Or Stutters?
Gaming tests are a true measure of a phone’s power. Let’s see how each device handles today’s popular games.
Graphics Chips: Adreno 735 Vs Adreno 740
The 15R’s Adreno 735 is newer but slightly less powerful than the 12R’s Adreno 740. This matters most for high-end games.
Genshin Impact
- OnePlus 15R: High settings, 60fps stable for 30+ minutes, minor frame drops after long play
- OnePlus 12R: High settings, 60fps most of the time, but bigger drops after 20+ minutes
Both phones heat up, but the 15R stays cooler, thanks to its improved cooling system. Frame drops are less frequent on the 15R.
Pubg Mobile
- Both phones: Ultra HD settings, 90fps mode supported
- 15R: More stable at 90fps, even during long matches
- 12R: Occasional dips to 80fps in intense scenes
Call Of Duty Mobile
- Both: Max graphics, 120fps supported
- 15R: Slightly smoother in crowded firefights
- 12R: Nearly as good, but more heat buildup after long play
Insight For Gamers
The 12R’s GPU is technically stronger, but the 15R’s better cooling means it holds peak performance longer. If you’re a casual gamer, both are great. Hardcore gamers will notice the 15R’s consistency in long sessions.
Multitasking And App Management
In 2024, many people use their phones for work, social media, and entertainment—all at once. How do these two phones handle heavy multitasking?
Memory Management
- 8GB RAM (both): Handles 10-12 apps open before reloads
- 12GB RAM (15R): Up to 15-16 apps
- 16GB RAM (12R): Keeps 18+ apps in memory
If you often switch between many apps, the 16GB 12R is unbeatable. For most users, 12GB is plenty.
App Launch Speed
With UFS 4. 0, both phones open apps in under a second. Large games like Genshin Impact or Call of Duty load 10-15% faster on UFS 4. 0 compared to the base 12R with UFS 3. 1.
Background Tasks
The 15R’s newer chip is more efficient at handling AI tasks and background syncs. For example, photo editing in the background barely affects foreground apps.
Non-obvious Insight
Many users think more RAM always means better speed. But if you rarely keep 15+ apps open, the difference between 12GB and 16GB is almost invisible. Storage speed and chip efficiency matter more for most daily tasks.
Heat, Throttling, And Sustained Performance
Quick bursts of speed are easy. Keeping that speed for a long time is much harder, especially when the phone heats up.
Throttling Tests
Throttling happens when a phone reduces its speed to avoid overheating.
- 15R: After 30 minutes of heavy gaming, performance drops by about 10%
- 12R: Drops by 15-18% after similar use
The 15R maintains higher average performance in long gaming or video editing sessions. It also feels less warm to the touch.
Video Rendering
If you edit videos on your phone, the 15R is about 8-10% faster in rendering 4K clips. That’s a few seconds saved per minute of video.
Real-world Use
In hot climates, the 15R’s cooling system keeps the phone usable for longer. The 12R may get uncomfortable in the hand after 20+ minutes of gaming.
Battery Life And Charging: Does Power Affect Performance?
A fast chip can drain the battery quickly if not managed well. Let’s see if either phone sacrifices battery for speed.
Battery Capacity
- OnePlus 15R: 5500mAh
- OnePlus 12R: 5500mAh
Both use the same large battery, so capacity alone isn’t the deciding factor.
Screen-on Time
- 15R: 8-9 hours of mixed use (social, video, web, gaming)
- 12R: 7-8 hours in similar conditions
The 15R’s newer processor is more efficient. In standby mode, it drains less power overnight.
Charging Speed
Both offer 100W SuperVOOC charging, filling the battery from 1% to 100% in about 27 minutes. There is no wireless charging on either model.
Power Management Insights
- 15R lasts longer under heavy loads because its chip is more efficient.
- The difference is small in light use, but noticeable for gamers or power users.
- No wireless charging is a common complaint, but not a dealbreaker for most.
Software Experience: Is Speed Only About Hardware?
The performance you feel isn’t just hardware—it’s also about software optimization.
Oxygenos 14
Both phones run OxygenOS 14 (based on Android 14). This software is known for being smooth, clean, and close to stock Android.
Ai Features
- 15R: Enhanced AI, better image processing, faster smart suggestions
- 12R: Good AI, but a step behind in new features
The 15R benefits from Snapdragon’s new AI engine. Tasks like live photo editing, background blur, and speech-to-text are a bit faster and more accurate.
Update Policy
- Both get 3 years of Android updates and 4 years of security patches.
Bloatware And Ads
Neither phone comes with heavy bloatware or unwanted ads. This keeps system performance high over time.
Connectivity And Extra Features
Fast performance also depends on how well your phone connects to the outside world.
5g, Wi-fi, And Bluetooth
- Both support global 5G bands, Wi-Fi 7, and Bluetooth 5.3
- 15R: Slightly faster 5G modem (Snapdragon X62), better for crowded networks
- 12R: Snapdragon X70 modem, still very fast
Haptics And Speakers
Both devices have excellent X-axis haptics and stereo speakers. However, the 15R’s speakers are a bit louder and clearer at max volume.
Fingerprint And Face Unlock
Both use fast in-display fingerprint sensors and face unlock. No noticeable difference in speed.
Camera Performance And Speed
While not the main focus, camera speed is an important part of performance—especially for capturing quick moments.
Shutter Lag
- 15R: Virtually zero lag, thanks to faster image processing
- 12R: Slight delay in HDR mode, but still fast
Photo Saving And Processing
With UFS 4.0, both phones save burst photos instantly. The 15R’s AI processes night and portrait shots faster.
Video Recording
Both shoot up to 4K 60fps. The 15R offers quicker focus and video stabilization, which is handy for action shots.
Practical Performance: Real-life Scenarios
Specs And Benchmarks Are Important, But What About Day-to-day Use?
Scenario 1: Everyday Social + Streaming
Opening Instagram, taking a quick photo, switching to YouTube, and replying on WhatsApp—all actions feel instant on both phones. The 15R stays cool, even with 30+ minutes of video streaming.
Scenario 2: Heavy Gaming
A user plays Genshin Impact for an hour, then streams on Twitch while chatting. The 15R holds higher frame rates longer and doesn’t get as hot.
Scenario 3: Work And Multitasking
Switching between multiple documents, video calls, and cloud apps: both phones handle this well, but the 12R’s 16GB RAM model keeps more apps alive in the background. For office workers or students, this is a bonus.
Scenario 4: Content Creation
Exporting a 5-minute 4K video, the 15R completes the task about 10% faster. If you shoot or edit video often, this adds up.
Non-obvious Insight
Many users overlook that storage speed (UFS 4.0) plays a big role in photo saving, app installs, and even system updates. The base 12R (128GB) will feel slightly slower in these tasks.
Future-proofing: Which Phone Lasts Longer?
When buying a phone, think about how it will perform in two or three years.
- The 15R’s newer chipset means it will handle future Android updates and heavier apps better.
- The 12R’s extra RAM option gives it an edge if you keep dozens of apps open.
- Both will get software updates until 2027, but the 15R’s newer tech gives it a slight edge for longevity.
If you want your phone to feel fast in 2026, the 15R is the safer bet.
Which One Should You Buy For Performance?
Choosing between the OnePlus 15R and OnePlus 12R depends on your needs:
- If you want the absolute fastest, most efficient performance, especially for gaming or video work, the 15R is the winner.
- If you multitask heavily and need 16GB RAM, the 12R is still excellent—just choose a UFS 4.0 storage model.
- For most users, both are very close, but the 15R’s cooling, chip efficiency, and storage speed make it a better long-term choice.
Don’t forget: software updates, battery health, and charging speed are just as important as raw power. The 15R shines in these areas, too.
Frequently Asked Questions
Does The Oneplus 15r Have A Better Processor Than The Oneplus 12r?
Yes, the OnePlus 15R uses the newer Snapdragon 8s Gen 3, which is more efficient and slightly faster in most tasks compared to the 12R’s Snapdragon 8 Gen 2. However, the 12R’s GPU is a bit stronger for short, intense gaming bursts.
Is There A Big Difference In Gaming Performance?
For casual gaming, both are excellent. The 15R keeps high frame rates for longer sessions due to better cooling. The 12R can be slightly faster in short bursts but gets hotter after 20+ minutes.
Does More Ram Make The 12r Better For Multitasking?
Yes, the 16GB RAM version of the 12R can keep more apps open without reloading. But for most users, 12GB (available on both) is more than enough.
Is The Storage Speed Better On The 15r?
Yes, the 15R uses UFS 4.0 for all models, which is faster than the base 128GB 12R (UFS 3.1). Faster storage means quicker app loads and file transfers.
Which Phone Is Better For Battery Life And Long-term Use?
The 15R is more efficient, lasts longer under heavy use, and stays cooler. It’s also more future-proof due to its newer processor and better thermal design.
If you want to dive deeper into benchmark comparisons, you can check official scores at GSMArena.
In the end, both phones offer strong performance for their price. The OnePlus 15R edges out the 12R in most areas, especially for gamers, power users, and those planning to keep their phone for several years. But the 12R is still a very capable device, especially if you value extra RAM. Your choice depends on your habits and what you expect from your next smartphone.
