In-Depth Performance and Thermal Analysis of the ASUS ROG GR70 Gaming Mini PC

By Poly Kaza

Author Bio

Poly Kaza is an electronics specialist with over a decade of experience testing laptops, consumer hardware, and smart devices. With a background in electrical engineering and system diagnostics, Poly focuses on objective, data-driven reviews that combine real-world usability with in-depth hardware analysis. Their evaluations are trusted for balancing technical rigor with hands-on experience.

First-Hand Experience

I subjected the compact ROG GR70 Gaming Mini PC to two weeks of extreme testing as a small-form-factor desktop replacement. My review unit was configured with a high-power Intel Core i7-14700KF processor, 32GB of fast DDR5 RAM, a 1TB Gen4 NVMe SSD, and a specialized blower-style NVIDIA GeForce RTX 4070 GPU. My primary focus was determining the thermal limits and stability of these high-TDP components within the tiny chassis, measuring sustained frame rates in 4K gaming, and assessing the noise output under peak load.

Proof Points / Evidence

• In Cinebench R23, the Core i7-14700KF (in Performance Mode) achieved an impressive multi-core score of 29,800 and a single-core score of 2,150, showcasing immense processing power for its volume.
• Gaming benchmark in Cyberpunk 2077 (4K, DLSS Quality, Ray Tracing Medium) averaged a highly playable 65 FPS, confirming the mini PC’s capability for 4K gaming.
• Under a 30-minute combined stress test (CPU/GPU), the CPU temperature peaked at 95°C and the GPU at 84°C, with fan noise reaching a noticeable, but contained, 48dB.
• The 1TB Gen4 NVMe SSD sequential read/write speeds averaged 7,050 / 6,550 MB/s on CrystalDiskMark, providing negligible load times.
• The chassis volume measures just 11.5 liters, yet thermal monitoring showed no evidence of performance-crippling thermal throttling over extended gaming sessions.
• Power consumption at the wall during peak load reached 450W, indicating the power supply is custom-tuned to safely handle the demands of the high-performance internal components.

Review Article

# ASUS ROG GR70 Gaming Mini PC: An In-Depth Performance and Thermal Analysis

**By Poly Kaza**

As an electronics specialist with over a decade of experience testing laptops, consumer hardware, and smart devices, I’m always keen to examine how manufacturers push the boundaries of performance in small form factors. My background in electrical engineering and system diagnostics allows me to focus on objective, data-driven reviews that combine real-world usability with in-depth hardware analysis. For the past two weeks, I’ve been rigorously testing the ASUS ROG GR70 Gaming Mini PC, evaluating its thermal performance, gaming capabilities, and overall suitability as a compact desktop replacement.

My review unit arrived configured with some serious firepower: an Intel Core i7-14700KF processor, 32GB of DDR5 RAM, a 1TB Gen4 NVMe SSD, and a dedicated, blower-style NVIDIA GeForce RTX 4070 GPU. My primary objectives were to determine the thermal limits of these high-TDP components within the tiny chassis, measure sustained frame rates in demanding 4K games, and assess the system’s noise output under prolonged stress.

## Raw Power in a Tiny Package

The first thing that struck me about the ROG GR70 is its incredibly compact size. The chassis volume measures a mere 11.5 liters, yet it houses components typically found in much larger gaming desktops. But does all that power translate into real-world performance? My tests certainly suggest it does.

To start, I ran Cinebench R23 to gauge the CPU’s capabilities. In its “Performance Mode,” the Core i7-14700KF achieved an impressive multi-core score of 29,800 and a single-core score of 2,150. These results highlight the immense processing power packed into this mini PC, rivaling larger desktop systems. These are impressive scores that demonstrate the processor’s ability to handle demanding tasks despite the size constraints.

## 4K Gaming Prowess

Of course, the real test for any gaming PC is its ability to deliver smooth frame rates in graphically intensive games. I chose Cyberpunk 2077 as my benchmark, running it at 4K resolution with DLSS set to “Quality” and Ray Tracing set to “Medium.” The ROG GR70 averaged a highly playable 65 FPS. This confirms that this mini PC is more than capable of delivering a great 4K gaming experience without major compromises to image quality. The smoothness of gameplay at this resolution genuinely surprised me.

## Thermal Management Under Pressure

Packing high-performance components into a small chassis inevitably raises thermal concerns. To evaluate the cooling system, I subjected the ROG GR70 to a grueling 30-minute combined stress test, pushing both the CPU and GPU to their limits simultaneously. I monitored temperatures closely throughout the test.

The CPU temperature peaked at 95°C, while the GPU reached 84°C. While these temperatures are on the higher end, crucially, I observed no evidence of performance-crippling thermal throttling. The system maintained its performance throughout the entire test, indicating that the cooling solution, though working hard, is effectively managing the heat generated by the components. Fan noise did reach a noticeable, but contained, 48dB under this peak load. This is definitely audible, but not overly distracting, especially with headphones.

## Storage Performance and Power Consumption

The ROG GR70 also boasts a blazing-fast 1TB Gen4 NVMe SSD. Using CrystalDiskMark, I measured sequential read/write speeds averaging 7,050 / 6,550 MB/s. These speeds translate to incredibly fast load times in games and applications, further enhancing the overall user experience. I barely noticed any loading delays when opening programs or starting games, showcasing the benefits of the fast storage solution.

Finally, I measured power consumption at the wall during the peak of the stress test. The system drew approximately 450W. This demonstrates that the power supply is custom-tuned to safely and efficiently handle the demands of the high-performance internal components. It’s reassuring to see that ASUS has prioritized a reliable power delivery system.

## Conclusion

After two weeks of rigorous testing, the ASUS ROG GR70 Gaming Mini PC has thoroughly impressed me. It delivers exceptional performance in a remarkably compact form factor. The combination of a powerful Intel Core i7 processor, a dedicated NVIDIA GeForce RTX 4070 GPU, and fast storage makes it a potent gaming machine. While the cooling system works hard to manage thermals, I experienced no significant performance throttling. If you’re looking for a small-form-factor PC that can handle demanding games and applications with ease, the ROG GR70 is definitely worth considering. Its blend of power, size, and thermal stability make it a standout product in the mini PC market.

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