Asus P5E-VM HDMI: A microATX C2D board for gamers?

CPUs|Motherboards
Viewing page 4 of 7 pages. Previous 1 2 3 4 5 6 7 Next

TESTING

Test Setup:

Measurement and Analysis Tools


Our test bed. Yes, the heatsink is installed backwards. Don't freak out.

THE FAN CONTROLS

To test exactly how the different fan profiles affected fan speed behavior, we used an incredibly complex technique called 'stopping the fan.' Unfortunately our specialized fan stopping tool was in the shop for repairs so we used a SATA data cable wedged in-between the fan blades instead. With the fan stopped, the CPU was allowed to heat up , and at specific temperatures we released the fan to see fast Q-Fan decided it should spin. We used a ZeroTherm BTF90 heatsink/fan which tops out at approximately 2500RPM to cool our E6400 processor. When cooled passively on the open testbench system, the CPU temperature stabilized at 69°C.

CPU Temp
CPU Fan Speed (RPM)
Silent
Optimal
Perf.
30°C
830
820
900
35°C
830
820
900
40°C
830
820
1360
45°C
840
1000
1590
50°C
840
1320
2220
55°C
1080
1730
2450
60°C
1320
2160
2450
65°C
1880
2480
2450
69°C
2160
2410
2450

As expected, the Silent profile waited the longest to spin up and spun up the least, never reaching the fan's maximum speed even at 69°C. The Performance profile behaved much more aggressively, beginning to ramp up between 35°C and 40°C, and reaching maximum speed at 55°C. The minimum speed was also slightly higher. The Optimal profile had the smoothest increase in fan speed, gradually picking up at around 40°C and topping out at 65°C. These profiles should satisfy most users.


SpeedFan's Readings screen.

For those looking for complete, customizable control, we loaded up SpeedFan to see what could be done. CPU0 Fan and Speed02 correlated to CPU_FAN, AUX0 Fan and Speed01 to CHA_FAN1, and Sys Fan to PWR_FAN (no speed control available).


'Manual PWM Control' is what you want for manual control.

To enable manual fan control of the CPU and case fan headers, we had to set PWM 1 and 2 mode to "Manual PWM Control." While the case fan header had a full range of control, the CPU fan header had a lower limit — it stopped decreasing the fan speed at approximately 30%. In addition, this header could only control 4-pin PWM fans.


PC Probe monitoring.

Asus' PC Probe also offered an extensive range of fan speed, temperature, and voltage monitoring data, as well as adjustable threshold limits.



Previous 1 2 3 4 5 6 7 Next

CPUs|Motherboards - Article Index
Help support this site, buy the Asus P5E-VM HDMI from one of our affiliate retailers!