LanCool PC-K59 Midtower Case

Cases|Damping
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Test Results: Radeon HD 4870


HD 4870 test system.


System Measurements (HD 4870)
System State
Idle
CPU + GPU Load
System Fan Speeds
off
7V
CPU Temp
36°C
31°C
45°C
SB Temp
52°C
46°C
54°C
HD Temp
40°C
30°C
30°C
GPU Temp
78°C
74°C
84°C
GPU Fan
Speed
960 RPM
870 RPM
1780 RPM
SPL@1m
21 dBA
23~24 dBA
26~27 dBA
System Power
117W
116W
301W
CPU fan set to 100% speed.
Ambient temperature: 22°C.

Without any of the stock fans, our HD 4870 test configuration idled at a fairly quiet 21 dBA@1m with the largest noise contributor, the GPU fan, spinning at just under 1000 RPM. With the stock fans running at 7V the noise levels were bumped up to 23-24 dBA@1m, but there were of course substantial improvements in overall thermal performance, so much so that the GPU dialed its fan back by ~100 RPM. Full load brought a significant rise in all temperatures except for the hard drive and caused the GPU fan to ramp up to 1780 RPM and the overall SPL to reach 26~27 dBA@1m.



Our HD 4870 test system measured 23~24 dBA@1m when idle and 26~27 dBA@1m on load with the stock fans at 7V.

As mentioned previously, the baseline noise level of the case and stock fan was innocuous and it remained so even after being combined with slight turbulence from the GPU, PSU, and CPU fans along with the hum from the hard drive with the system at idle. The broadband acoustics of the reference HD 4870 cooler also meant that on load, the high 26~27 dBA@1m noise level didn't sound terrible. It generated a bearable soft hissing type noise.

HD 4870 Configuration Comparison (Load)
Case
Zalman Z9 Plus
Fractal Define R2
LanCool PC-K59
In Win BUC
System Fan Speeds
top, rear & front @7V
rear, front & side @12V
top, rear, front @7V
top, rear, front @7V
CPU Temp
44°C
48°C
45°C
43°C
SB Temp
50°C
45°C
54°C
49°C
HD Temp
32°C
34°C
30°C
32°C
GPU Temp
85°C
84°C
84°C
85°C
GPU Fan
Speed
1580 RPM
1710 RPM
1780 RPM
1770 RPM
SPL@1m
26~27 dBA
26~27 dBA
26~27 dBA
27 dBA
CPU fan set to 100% speed
All temperature results adjusted to 22°C ambient.

Compared to previously tested cases in the same price range, the PC-K59 doesn't really stand out, producing results somewhere between in the Fractal Define R2/R3 and In Win BUC.



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