NoFan CR-80EH & CS-60 Fanless Cooler & Case

Cases|Damping | Cooling | Silent PC Build Guides
Viewing page 6 of 7 pages. Previous 1 2 3 4 5 6 7 Next

TEST RESULTS

Open Air Test Platform

We begin with a load test on our open small heatsink test platform which features an overclocked/overvolted Core i5-2400. The thermal rise above ambient is tracked over time until the temperature stabilizes or the CPU begins to throttle.

Passive Cooler Performance: Thermal Rise
(Core i5-2400 @ 3.6 GHz, 1.3V, Prime95)
Time Elapsed
NoFan CR-95C
NoFan CR-80EH
Start
4°C
5°C
1 minute
34°C
45°C
2 minutes
41°C
56°C
3 minutes
45°C
62°C
4 minutes
47°C
66°C
5 minutes
50°C
70°C
10 minutes
53°C
74°C
15 minutes
54°C
76°C
>20 minutes
54°C
78°C
Ambient noise level: 10~11 dBA

Right out of the gate, the CR-80EH is already at a 10°C disadvantage compared to its big brother, the CR-95C As time goes by, the CPU temperature increases at quicker pace as well. After all is said and done, the temperature stabilizes at 78°C above ambient — another 2°C and the CPU would throttle. The smaller size of the CR-80EH makes a huge impact on performance, to the tune of 24°C.

While it's impressive that the CR-80EH passes this test at all, keep in mind it's an open testbed with no airflow restrictions. It's also notable that the only cooler to ever fail this test is the Reeven Vanxie, a low profile heatsink standing only 34 mm tall and weighing a mere 180 grams. This tiny cooler failed to keep the CPU from throttling only when the fan speed was reduced such that it produced just 12 [email protected], a practically inaudible noise level.

CS-60 Test Platform

For our in-case test, we monitor all system temperatures while putting the system in various states. A fan is also outfitted on the side panel in the event it is needed to ensure adequate cooling (i.e. to prevent the CPU from downclocking automatically if it surpasses the thermal threshold).

Note: As not all motherboards use the same Turbo Boost multipliers by default, the 4-core Turbo Boost multiplier is set to a limit of 36x, the same standard we use for testing LGA1150 boards to keep the power consumption on a level playing field.

In-Case System Results (Core i5-4690K)
State
Idle
TMPGEnc
Prime95
System Fan Speed
N/A
N/A
500 RPM
CPU Temp
40°C
74°C
88°C*
72°C
VRM Temp
41°C
55°C
63°C
57°C
MB Temp
32°C
32°C
33°C
35°C
SSD Temp
26°C
28°C
29°C
31°C
System Power (AC)
30W
82W
95W
107W
N/A
N/A
13 dBA
*CPU throttled to 3.1 GHz.
Ambient noise level: 10~11 dBA
Ambient temperature: 22°C

Using video encoding with TMPGEnc as a real world load test, the NoFan fanless system runs fairly warm with the CPU hitting 74°C and the VRM area reaching 55°C. However, on Prime95, it initially eclipses the 90°C mark before the processor throttles, downclocking itself by 500 MHz, before stabilizing at 88°C while the VRMs peak at 63°C. The Core i5-4690K is just a little too hot for it to handle, but as its TDP is 88W, this makes the CR-80EH's 80W limit seems about right.

Turning on the side fan and setting it a mere 500 RPM quickly puts it back on track, with the processor finishing slightly cooler than in the TMPGEnc test, while running at the full 3.6 GHz. A little direct airflow goes a long way and the fan at this speed generates only 13 [email protected], which is barely audible.

In-Case Performance (Core i5-4690K, Prime95)
Cooler
NoFan CR-95C
NoFan CR-80EH
CPU Temp
76°C
88°C*
VRM Temp
61°C
63°C
MB Temp
33°C
33°C
SSD Temp
30°C
29°C
System Power (AC)
107W
95W
*CPU throttled to 3.1 GHz.
Ambient noise level: 10~11 dBA
Ambient temperature: 22°C

NoFan doesn't specify a maximum TDP for the larger CR-95C, but it handles the i5-4690K in the CS-60 case with relative ease, finishing the Prime95 test well under the throttling point.



Previous 1 2 3 4 5 6 7 Next

Cases|Damping - Article Index
Help support this site, buy from one of our affiliate retailers!
Search: