If you have been following along, I already covered  the unboxing of the iQOO 15R -- the build, the first impressions, and what comes in the box. Now it is time for the part I was genuinely excited about. Performance.

iQOO has been positioning the iQOO 15R as a serious performance device, and the specs back that up on paper. Snapdragon 8 Gen 5, Adreno 829 GPU, a dedicated Q2 gaming chip, and a 6500mm² IceCore vapour chamber cooling system.

But specs on paper are one thing. I wanted to know how it actually holds up in benchmarks and real gaming. This is Part 1, covering all the synthetic benchmarks and the most commonly asked performance questions. Part 2 will go deep into real-life gaming -- COD Mobile, BGMI, FPS numbers, thermals, and battery during gameplay. Stay tuned for that.

For now, let's get into the numbers.

iQOO 15R Benchmark Results

Test conditions:

• OS: OriginOS 16 (Based on Android 16)
• RAM: 12GB LPDDR5x Ultra
• ROM: 512GB UFS 4.1
• Firmware PD2536IF_EX_A_16.0.9.4.W30
• Room temp ~24°C
• Wi-Fi
• Monster Mode ON

iQOO 15R Geekbench 6 Results

The iQOO 15R runs on the Snapdragon 8 Gen 5 (TSMC 3nm), built around 2x Oryon Prime cores hitting up to 3.8GHz and 6x Oryon Performance cores at up to 3.32GHz. Qualcomm claims a 36% performance improvement over the previous generation, and the Geekbench numbers reflect exactly that.

The single-core score of 2,694 is what you feel as day-to-day snappiness -- apps launching instantly, UI scrolling without a hiccup. The multi-core 8,603 takes care of heavier workloads and multitasking. CPU Temperatures peaked around 47°C, which is normal for this level of CPU load, suface temperature was around 43°C and the phone never felt uncomfortable during the test.

When it comes to GPU test, the Adreno 829 GPU scored 17,104 on OpenCL -- a significant step up from the Adreno 750 in the previous generation Snapdragon 8 Gen 3. These numbers translate directly into real gaming performance, as you will see in the sections below.

iQOO 15R AnTuTu v11 Benchmark Results

AnTuTu is one of the most widely used benchmark tools in the Android world. It tests four key areas -- CPU (processor tasks), GPU (graphics rendering), MEM (memory speed and efficiency), and UX (system responsiveness and UI performance) -- and combines them into one total score. Simply put, the higher the number, the better the phone handles everything from gaming to multitasking to heavy apps. Anything above 2.5 million is considered flagship territory in 2025--2026.

During my testing, iQOO 15R secured a score of 2.97 million, which is outstanding -- the Adreno 829's GPU score of 999,564 is essentially a million points, which is flagship-peak territory.

What stood out even more was how cool the phone ran throughout -- just 1.9°C temperature rise and barely 1% battery drop during the entire run. That is the Snapdragon 8 Gen 5's TSMC 3nm efficiency and the 6500mm² IceCore VC cooling doing their job quietly in the background.

iQOO 15R 3DMark Wild Life Stress Test

Wild Life Stress Test is the benchmark that matters most for gamers. Wild Life Stress Test runs 20 loops of GPU-intensive scenes and the stability score tells you how much performance drops between the first and the last loop -- a direct test of how well the cooling holds up under sustained pressure.

86.2% stability is an excellent result. The phone started strong and barely backed off across 20 loops of punishing GPU load. Surface temperature peaked at just 42°C -- that is the 6500mm² IceCore VC cooling, dual-layer graphite sheet, and 14,000mm²+ thermal conductivity area working together, capable of bringing temperatures down by up to 15°C in 10 minutes. A 5% battery drop across the entire run also shows how efficiently the Snapdragon 8 Gen 5 manages power under sustained stress.

iQOO 15R Performance FAQs

Q1. What RAM and storage does the iQOO 15R use, and does it make a difference?

The iQOO 15R comes with 12GB LPDDR5X Ultra RAM running at 9600Mbps and 512GB UFS 4.1 storage -- both are the fastest grades available on Android right now. In benchmarks, this shows up directly in the AnTuTu MEM score of 450,691 and UX score of 665,393. In real use, it means apps stay in memory longer, game load times are fast, and there is no lag when switching between heavy apps.

Q2. Does the Snapdragon 8 Gen 5 in the 15R offer any improvement over the previous generation?

Compared to the Snapdragon 8 Gen 3, the Snapdragon 8 Gen 5 delivers 

• 36% higher CPU energy efficiency
• 42% lower CPU power consumption
• 11% better GPU performance
• 28% lower GPU power consumption.

In simple terms -- faster, cooler, and longer lasting than the chip it replaces. Our Geekbench and AnTuTu numbers back this up with real scores.

Q3. What does the Network Enhancement Chip do in the iQOO 15R?

The iQOO 15R has a dedicated Network Enhancement Chip built in, separate from the main Snapdragon 8 Gen 5. It delivers:

• 20% better gaming antenna performance
• 12% better signal in elevators and weak signal areas
• 77% better dual-band GPS positioning performance 

compared to the previous generation products. For online gaming, that translates directly to fewer lag spikes, more stable connections mid-match, and better location accuracy in open-world or battle royale games.

Wrapping Up Part 1

The benchmarks tell a clear story -- the iQOO 15R is a consistent, thermally efficient performance machine.

The Snapdragon 8 Gen 5 scores big and, more importantly, holds that performance under sustained load without the phone running hot or draining battery aggressively. That 86.2% 3DMark stability and near-3 million AnTuTu score are not just numbers for the spec sheet -- they reflect how the chip and cooling system work together under real pressure.

Part 2 is coming next -- that is where we take this hardware into actual gaming. COD Mobile, BGMI, real FPS numbers, thermals during extended sessions, and battery drain. If you are a gamer, that is the one to watch for.

Your Turn!

Got questions about the iQOO 15R's performance that are not covered here? Drop them in the comments and I will add them to the FAQ list.

Signing off, 

@Vishwa_24, @iQOO Connect Ranger, Coimbatore.