The PlayStation 5 has undergone a notable revision since its 2020 launch, evolving from the original “fat” model to the newer, more compact “Slim” version. While Sony markets the redesign as sleeker and lighter, many gamers are asking whether this shrink in size comes at a cost—specifically, does the smaller form factor impact thermal performance and fan noise? This question is especially relevant for players who prioritize quiet operation, long-term hardware health, and consistent performance during extended gaming sessions.
This article dives deep into the physical, thermal, and acoustic differences between the PS5 Slim and the original PS5 (often referred to as the \"fat\" model). We’ll examine internal design changes, analyze real-world temperature data, compare fan behavior under load, and assess whether the reduced size compromises cooling efficiency or increases operational noise.
Design Evolution: From Fat to Slim
The original PS5, released in November 2020, was immediately recognized for its bold, futuristic design—two large white panels flanking a central black core. It’s also notably large, measuring approximately 390mm x 104mm x 260mm and weighing around 4.5 kg (9.9 lbs) for the disc edition. Its size wasn’t just aesthetic; it accommodated a substantial internal heatsink and airflow system designed to manage the heat output of the AMD Zen 2 CPU and RDNA 2 GPU.
In late 2023, Sony introduced the PS5 Slim, reducing volume by over 30% and cutting weight by nearly 18%. The new model measures roughly 358mm x 96mm x 216mm and weighs about 3.2 kg (7.0 lbs) for the disc version. Visually, it's segmented into two detachable side panels, allowing users to swap colors—an added customization feature not present on the original.
Beyond aesthetics and portability, the key concern lies beneath the shell: Has Sony compromised the cooling architecture to achieve this downsizing?
Internal Changes and Cooling Architecture
Sony didn’t merely shrink the PS5; they redesigned critical internal components. The most significant change is the use of a **smaller, more efficient motherboard** made possible by transitioning to a **6nm SoC (system-on-a-chip)** die shrink from the original 7nm process. This advancement reduces power consumption and heat generation at the source, enabling a smaller thermal solution.
The Slim model features a revised heatsink with a more compact fin array and a slightly repositioned fan. While the overall surface area of the heatsink is reduced, improvements in thermal paste application, heat pipe routing, and airflow dynamics help maintain effective heat dissipation. Additionally, the internal layout allows for better channeling of air from intake to exhaust, minimizing turbulence.
According to iFixit’s teardown analysis, the Slim’s cooling assembly uses a **shorter but denser heatsink**, suggesting an emphasis on targeted cooling rather than brute-force thermal mass. This design relies on higher airflow velocity and improved thermal conductivity materials to compensate for reduced size.
“Smaller doesn’t mean worse when it comes to cooling. With modern chip efficiency and smarter airflow engineering, you can actually improve thermals while reducing volume.” — Dr. Alan Park, Hardware Thermal Engineer
Temperature Performance: Lab vs Real-World Use
To evaluate whether the Slim runs hotter, multiple independent tests have been conducted using thermal imaging and internal sensor logging during sustained gaming loads (e.g., playing *Spider-Man: Miles Morales* at 60fps for 90 minutes).
In controlled environments, both models stabilize within acceptable temperature ranges:
- Original PS5: CPU junction temp averages 78–82°C under full load.
- PS5 Slim: CPU junction temp averages 80–84°C under identical conditions.
The difference is marginal—within the margin of error for most sensors—and well below throttling thresholds (typically above 90°C). GPU temperatures follow a similar pattern, with the Slim running 2–3°C warmer on average. However, neither console exceeds safe operating limits, even in poorly ventilated entertainment centers.
Noise Levels: Is the Slim Louder?
Fan noise is often more noticeable than temperature to the average user. A noisier console can disrupt immersion, especially during quieter game moments or when using headphones.
Multiple audio decibel tests (conducted in a 25 dBA ambient room) show the following average fan noise levels during gameplay:
| Model | Idle (dB) | Moderate Load (dB) | Heavy Load (dB) |
|---|---|---|---|
| PS5 Fat (Disc Edition) | 32 dB | 38 dB | 43 dB |
| PS5 Slim (Disc Edition) | 33 dB | 39 dB | 44 dB |
The data shows that the Slim is only 1–2 dB louder across all scenarios—a difference that is technically measurable but often imperceptible to the human ear without direct A/B comparison. Subjectively, most users report no noticeable increase in noise during daily use.
The Slim’s fan operates at slightly higher RPMs due to the smaller heatsink requiring faster airflow to move the same amount of heat. However, Sony has tuned the fan curve conservatively, avoiding sudden spikes. In practice, both consoles ramp up smoothly and quietly during load transitions.
Mini Case Study: Long-Term Usage in a Home Theater Setup
Mark T., a software developer and avid gamer from Austin, TX, owns both PS5 models. He used the original PS5 from launch until upgrading to the Slim in early 2024. Both units were placed in the same entertainment center—ventilated but partially enclosed—with average room temperature around 22°C (72°F).
Over six months of daily use (2–4 hours per day), Mark logged observations using a sound meter app and infrared thermometer. He found that his Slim unit ran about 3°C warmer at peak load but never triggered thermal warnings. Noise levels were nearly identical, though he noted the Slim’s fan had a slightly higher-pitched tone under heavy load.
“I honestly thought I’d miss the bigger one,” Mark said. “But after switching, I don’t notice any difference in performance or noise. If anything, the smaller size fits better with my setup.”
Comparison Table: Key Differences at a Glance
| Feature | PS5 Fat (Original) | PS5 Slim |
|---|---|---|
| Dimensions | 390 × 104 × 260 mm | 358 × 96 × 216 mm |
| Weight (Disc Edition) | 4.5 kg (9.9 lbs) | 3.2 kg (7.0 lbs) |
| SoC Process Node | 7nm | 6nm |
| Internal Storage (Usable) | ~667 GB | ~667 GB (same) |
| Expandable Storage | M.2 NVMe SSD slot | M.2 NVMe SSD slot |
| Cooling System | Larger heatsink, dual intake | Compact heatsink, optimized airflow |
| Average Fan Noise (Load) | 43 dB | 44 dB |
| Detachable Panels | No | Yes (color-swappable) |
| Stand Orientation | Screw-in stand (horizontal/vertical) | Integrated stand (horizontal only), optional vertical adapter |
Step-by-Step Guide: Optimizing Console Cooling
Whether you own the original or Slim PS5, these steps will help minimize heat buildup and reduce fan noise:
- Position the console correctly: Place it vertically if possible, ensuring the base is secure. Vertical orientation improves natural convection.
- Ensure adequate ventilation: Leave at least 10 cm (4 inches) of space on all sides, especially near the rear exhaust and side intakes.
- Avoid enclosed spaces: Do not place the PS5 inside a closed cabinet or behind thick curtains. Restricted airflow forces the fan to work harder.
- Keep vents clean: Dust buildup acts as insulation. Use compressed air every 3–6 months to clear intake grills.
- Use a cooling pad (optional): For users in hot climates, a passive cooling stand with additional fans can reduce ambient intake temperature by 3–5°C.
- Monitor background processes: Disable unnecessary downloads or updates during gameplay to reduce sustained load.
Frequently Asked Questions
Does the PS5 Slim overheat more than the original?
No, the PS5 Slim does not overheat more than the original model. Despite its smaller size, engineering improvements—including a more efficient 6nm chip and refined airflow—keep temperatures within safe limits. Independent tests show only a 2–3°C increase under load, which is negligible in real-world use.
Is the PS5 Slim fan louder during gameplay?
Technically, yes—but barely. The Slim is about 1–2 dB louder on average due to slightly higher fan speeds needed to cool the compact heatsink. However, this difference is rarely noticeable without direct comparison and does not impact the gaming experience for most users.
Can I upgrade the PS5 Slim’s cooling system?
Not officially. Unlike PCs, the PS5’s cooling system is sealed and not user-upgradable. Third-party modifications exist but void the warranty and carry risk of damage. The best approach is proper placement and regular dust maintenance.
Expert Insight: Efficiency Over Size
The shift to a smaller console reflects broader trends in consumer electronics: miniaturization driven by semiconductor advancements. As chips become more power-efficient, manufacturers can reduce supporting hardware like heatsinks and fans without sacrificing performance.
“The PS5 Slim is a textbook example of second-gen refinement. They didn’t just make it smaller—they made it smarter. The 6nm die shrink alone reduces heat output significantly, which gives engineers room to optimize the entire thermal stack.” — Lisa Chen, Senior Analyst at TechInsight Labs
This evolution mirrors similar transitions in laptops and smartphones, where thermal constraints once limited performance but now are managed through integrated efficiency gains rather than sheer component size.
Conclusion: Size Doesn’t Dictate Performance
The transition from the original PS5 to the Slim model represents thoughtful engineering, not compromise. While the console is visibly smaller and lighter, its thermal and acoustic performance remains on par with the original. The slight increase in temperature and noise is offset by a more efficient processor, smarter airflow design, and practical benefits like easier placement and customizable panels.
Gamers concerned about cooling or noise should focus less on the model and more on usage habits. Proper ventilation, routine cleaning, and mindful placement matter far more than the minor hardware differences between the two versions.
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