Independent Performance Study • Particle Studios Lab
Do Fan Shrouds Affect CPU Temperatures? We Tested Ours.
Most fan shroud products make no performance claims at all. We think that is a mistake. If you are going to add hardware to your cooling loop, you deserve to know exactly what it does — and what it does not do.
Across all four CPU temperature metrics, sustained at 100% load.
Neither scenario triggered throttling at any point during testing.
Peak recorded temperature with shroud installed: ~90°C. Max rated: 100°C.
The Question
Does the shroud restrict airflow enough to matter?
Adding a shroud, a stainless steel mesh filter, and an outer cover to a CPU fan creates additional material between the fan and the ambient air. The reasonable concern: does that restrict airflow enough to meaningfully raise CPU temperatures under load?
Short answer: no. Here is the longer one.
Methodology
A controlled, repeatable stress test.
All testing was conducted using Cinebench 2024.1.0, the industry-standard CPU benchmark, running the multi-core stress test. Each scenario was run twice — with each Cinebench run consisting of three full render passes — resulting in 12 total renders and over 1,600 analyzed data points across all test scenarios.
Hardware data was logged in real time using HWiNFO64 and cleaned using a custom Python script to isolate CPU temperature columns. Data was trimmed to capture only sustained 100% load periods, removing idle ramp-up and cooldown values that would skew averages.
Results
The numbers, unedited.
| Test Scenario | Core Temp (avg) | CPU Package | CPU (PECI) |
|---|---|---|---|
| Without Shroud | |||
| Run 1 | 82.81°C | 88.80°C | 88.60°C |
| Run 2 | 83.15°C | 89.23°C | 88.85°C |
| Average | 82.98°C | 89.01°C | 88.72°C |
| With Shroud | |||
| Run 1 | 84.29°C | 90.14°C | 89.82°C |
| Run 2 | 85.09°C | 90.74°C | 90.56°C |
| Average | 84.69°C | 90.44°C | 90.19°C |
| Difference | +1.71°C | +1.43°C | +1.46°C |
What It Means
Context is everything.
To put that number in context: the Intel Core i5-13600KF has a maximum rated operating temperature of 100°C. The tested system peaked around 90°C under sustained full load with the shroud installed — 10°C below the thermal ceiling, with no throttling observed.
A 1.45°C average increase under worst-case, sustained stress test conditions is well within the noise floor of normal day-to-day PC operation. Real-world workloads — gaming, video rendering, browsing — will produce lower and more variable temperatures than a synthetic benchmark running at 100% load continuously.
In plain terms: the shroud is unlikely to affect your CPU’s performance, longevity, or thermals in any meaningful way during normal use.
Honest Caveats
What this test does not prove.
We believe in transparency, so here is what we are not claiming.
Correlation, not causation
This data establishes a correlation between the shroud and a temperature increase under these specific test conditions. Variables like fan curve settings, case airflow configuration, ambient temperature fluctuations, and cooler mounting pressure all influence CPU thermals. Additional testing across different cooler types, fan sizes, and case configurations would be needed to make broader claims.
We ran this test on one system. Your results will vary based on your hardware and case setup.
The Bottom Line
You do not have to choose.
The FS-Series fan shroud adds an average of 1.45°C to CPU temperatures under sustained full-load stress testing. No thermal throttling was observed. For the vast majority of builders, this delta is negligible.
You do not have to choose between a cleaner build and a performing one.
FAQ
Common questions, straight answers.
Does a PC fan shroud hurt performance?
Based on our testing, the Particle Studios fan shroud increased average CPU temperatures by 1.45°C under full synthetic load. No performance throttling was detected. For typical workloads, the thermal impact is negligible.
Does the stainless steel mesh filter restrict airflow?
The filter uses an 850 micron (0.85mm) aperture stainless steel mesh, designed to block dust particles while maintaining airflow. Our testing showed only a marginal temperature difference between filtered and unfiltered configurations.
What CPU cooler was used in the test?
The bequiet! Dark Rock Slim with a Cooler Master Silencio FP120 fan running on the silent BIOS profile — a conservative thermal setup. Higher-performance coolers would likely show an even smaller delta.
Were tests conducted under real-world or synthetic conditions?
Synthetic — Cinebench 2024 multi-core, which represents a worst-case sustained CPU load scenario. Real-world workloads will generally produce lower temperatures.
Ready to See It in Your Build
You have seen how it performs. Now see how it looks.
Every FS-Series shroud ships with the stainless steel mesh filter and M5 hardware included. Made to order in Atlanta, GA.
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