PWM Performance
Temperatures
| |
Idle |
Load |
| Noctua NH-U12S
Dual Fan |
33 °C |
55 °C |
| Corsair H75 Single
Fan |
35 °C |
55 °C |
| Raijintek Themis
EVO |
35 °C |
56 °C |
| Prolimatech Lynx |
34 °C |
57 °C |
| Noctua NH-U12S
Single Fan |
36 °C |
57 °C |
| Scythe Ashura |
36 °C |
58 °C |
| Alpenföhn
Matterhorn Pure |
35 °C |
59 °C |
| Cooler
Master Hyper 103 |
36 °C |
60 °C |
| Intel Stock |
39 °C |
75 °C |
At this point we plugged the fan(s) to the motherboard CPU fan header and let the
motherboard take care of fan speeds. In other words the motherboard will
adjust the fan speed via PWM signal according to CPU temperature. The idle
temperature is the lowest temperature hit by the processor package after 10
minutes idle. The load temperature is the highest temperature hit by the
processor package after one pass of wPrime v2.10. The
wPrime test takes 4 minutes puts load on all 8 threads.
Room temperature is 25°C.
Fan Speeds
| |
Idle |
Load |
| Noctua NH-U12S
Dual Fan |
380 rpm |
687 rpm |
| Noctua NH-U12S
Single Fan |
450 rpm |
740 rpm |
| Alpenföhn
Matterhorn Pure |
471 rpm |
770 rpm |
| Scythe Ashura |
436 rpm |
550 rpm |
| Corsair H75 Single
Fan |
800 rpm |
969 rpm |
| Prolimatech Lynx |
765 rpm |
1'077 rpm |
| Raijintek Themis
EVO |
990 rpm |
1'115 rpm |
| Cooler
Master Hyper 103 |
950 rpm |
1'465 rpm |
| Intel Stock |
1'230 rpm |
1'630 rpm |
Values are in RPM, we took the lowest speed hit by the fan(s) in idle and the
highest under load.
Noise Levels
| |
Idle |
Load |
| Noctua NH-U12S
Single Fan |
32.0 dBA |
32.0 dBA |
| Noctua NH-U12S
Dual Fan |
32.0 dBA |
32.4 dBA |
| Alpenföhn
Matterhorn Pure |
32.0 dBA |
32.7 dBA |
| Corsair H75 Single
Fan |
32.2 dBA |
33.2 dBA |
| Scythe Ashura |
32.0
dBA |
33.6 dBA |
| Cooler
Master Hyper 103 |
32.0 dBA |
33.6 dBA |
| Prolimatech Lynx |
33.3 dBA |
33.9 dBA |
| Intel Stock |
33.3 dBA |
34.4 dBA |
| Raijintek Themis
EVO |
34.8 dBA |
35.3 dBA |
Decibel meter (Voltcraft SL-200) has been placed 1 meter away from the
cooler. Measurements are conducted in a quiet room, where there are no other noise source. 32 dBA is the lowest
we can get in our room. Also here
the measurements are conducted at lowest and highest fan speeds in idle and
under load respectively.
Scythe Ashura Review 