Cooler Master Silencio 652S Tower Case

Cases|Damping
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TEST RESULTS.

System Measurements (80°C Target GPU Temp)
System State
Idle
CPU + GPU Load
Avg. System Fan Speed
540 RPM (50%)
540 RPM (50%)
780 RPM (70%)
1030 RPM (90%)
GPU Fan Speed*
Off
1490 RPM (50%)
1360 RPM (47%)
1170 RPM (43%)
CPU Temp
29°C
74°C
70°C
66°C
MB Temp
35°C
51°C
50°C
46°C
SSHD Temp
33°C
35°C
34°C
33°C
GPU Temp
35°C
80°C
80°C
80°C
System Power (AC)
48W
361W
360W
355W
19 dBA
24~25 dBA
23~24 dBA
23 dBA
*set as low as possible to maintain target GPU temperature on load.
CPU fan at 800 RPM.
Ambient temperature: 22°C.

Sitting idle, the internal temperatures are quite low with the CPU running close to 30°C and the motherboard, SSHD, and GPU at or below 35°C. Keeping the system fans at 50% speed on load causes a sizable increase in thermals for all components aside from the SSHD, which remains mostly unaffected in the cooler portion of the case near the floor. The CPU and motherboard heats up by a massive 45°C and 16°C respectively, and stabilizing the GPU at 80°C requires GPU fan speeds of 1490 RPM (50%). In this state, the machine generates a moderate noise level of 24~25 [email protected]

Increasing the system fan speeds to 70% helps cool down the CPU by 4°C and allows the GPU fans to slow by 130 RPM while the noise level drops by 1 dB. 90% proves to generate the best results, lowering both the CPU and motherboard temperature by an extra 4°C, giving the GPU fans an additional respite of 190 RPM, and producing an overall SPL of 23 [email protected]

The noise produced by the CPU and GPU fans is a bit of a blessing in this case as it helps balance out the poor acoustics of the stock fans. Blended together, the tonality is less conspicuous, and the overall sound more tolerable. Typically, the GPU fans have the poorest sound, but here they're actually beneficial. Hard drive vibration is still an audible aspect of the system's acoustics. Pressing down firmly on almost any part of the chassis improves the sound of the machine.

System Measurements: CPU + GPU Load (80°C Target GPU Temp)
Configuration
Stock
Top Cover Off
Avg. System Fan Speed
1030 RPM (90%)
780 RPM (70%)
1030 RPM (90%)
GPU Fan Speed*
1170 RPM (43%)
1360 RPM (47%)
1270 RPM (45%)
1120 RPM (41%)
CPU Temp
66°C
70°C
64°C
62°C
MB Temp
46°C
50°C
48°C
45°C
SSHD Temp
33°C
34°C
32°C
32°C
GPU Temp
80°C
80°C
80°C
80°C
System Power (AC)
355W
360W
354W
352W
23 dBA
23~24 dBA
23~24 dBA
24 dBA
*set as low as possible to maintain target GPU temperature on load.
CPU fan at 800 RPM.
Ambient temperature: 22°C.

Removing the top fan cover is significantly advantageous at 70% fan speed. The CPU cools down by 6°C while the motherboard and SSHD temperatures drop by 2°C a piece. A small reduction in GPU fan speed offsets the extra noise escaping the case through the ceiling. At 90% fan speed, the thermal difference is noticeable too but less dramatic, and the system SPL actually goes up slightly.

On a side note, the 120 Hz tone from hard drive vibration is lessened somewhat when the top cover is taken off, suggesting that it rattles slightly as the rest of the chassis shakes. The vibration issue may be exacerbated by the 652S' numerous panels, filters, and covers.

Case Comparison: System Measurements
(CPU + GPU Load, 80°C Target GPU Temp)
Case
SilverStone Fortress FT05
SilverStone Kublai KL05
Cooler Master Silencio 652S
NZXT H440
Avg. System Fan Speed
2 x 500 RPM
2 x 840 RPM (60%)
3 x 1120 RPM (90%)
3 x 810 RPM (60%)
GPU Fan Speed*
1000 RPM
1070 RPM
1120 RPM
1410 RPM
CPU Temp
53°C
57°C
62°C
66°C
MB Temp
36°C
43°C
45°C
51°C
SSHD Temp
33°C
34°C
32°C
36°C
GPU Temp
80°C
80°C
80°C
80°C
System Power (AC)
348W
351W
352W
358W
21~22 dBA
24 dBA
24 dBA
24 dBA
*set as low as possible to maintain target GPU temperature.
CPU fan at 800 RPM.
Ambient temperature: 22°C.

Our best result with the Silencio 652S isn't terribly impressive compared to previously tested cases. At the same 24 [email protected] noise level, the SilverStone Kublai KL05, a more affordable budget case, runs cooler across the board. The 652S does manage to beat the under-ventilated NZXT H440, but this is not much of an accomplishment.

On load, the hard drive vibration issue doesn't affect the acoustics in any measurable way, and the overall airflow scheme seems sound. That leaves the fans as the probable culprit behind this poor showing. It would seem that not only do they sound bad, they don't perform well either, at least as case fans.



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