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Untitled Document
The Test Rig
- AMD XP1700 Thoroughbred B
- Epox 8rda
- Corsair XMS3500
The Test
I used the XP1700 using the default 1470 mhz (11x133) @ 1.6v. The 80mm fan
was set to its lowest setting on the fan controller (1520rpm), 2800rpm and 3600rpm
which is as high as the controller allows in adjustable mode. Then finally at
4000rpm by changing to the high setting switch (12v).
Readings were taken using the core diode and also using a thermister I placed
against the core. Prime95 was run for 30 minutes for each fan speed. I used
the supplied cooling flow thermal paste for the tests. Throughout all of these
tests, ambient was a consistent 22 degrees.
1470mhz @ 1.60v
| Test |
Diode Temperature |
Thermister Temperature |
1520@idle |
33c |
34.8c |
1520@load |
38c |
40.8c |
2812@idle |
32c |
33.3c |
2812@load |
35c |
36.8c |
3668@idle |
31c |
32.1c |
3668@load |
34c |
35.8c |
4050@idle |
31c |
31.7c |
4050@load |
33c |
35.1c |
1900mhz @ 1.87v
| Test |
Diode Temperature |
Thermister Temperature |
4062@idle |
35c |
36.7c |
4062@load |
40c |
42.7c |
2000mhz @ 1.92v
| Test |
Diode Temperature |
Thermister Temperature |
4115@idle |
36c |
39.6c |
4115@load |
41c |
44.6c |
Conclusion
The fan is almost silent until you reach over ~2800 rpm but even at its highest
setting of 4000rpm it is still quieter than the 6000rpm delta that most units
seem to use. As the results show, the quieter you go, the less cooling you get
but it still keeps the CPU well within safe limits - so the fast speeds only
seem to be necessary when you are running at very overclocked speeds. One problem
I noticed that when using the switch that sets the fan from adjustable mode
to full speed mode while the computer is powered on causes a reboot. I found
this out the hard way :P
The size of this cooler may be an issue on some Socket A motherboards as it
was in my case. This heatsink performed very well for an aluminium heatsink
and it makes me wonder how good a copper version of this cooler would be. I
imagine it would need to use the 4 hole mounting system to cope with the extra
weight.
Pros
- Silent at low fan settings.
- High quality construction.
- Polished mounting surface.
- AMD and Intel sockets both supported.
- Adjustable fan speeds.
- Excellent overclocking abilities.
Cons
- Size is rather large and is very hard to mount on a epox 8rda.
- The high/adjustable switch causes reboots if used while pc is running.
After a thorough testing at both default and overclocked settings this heatsink
impressed me with its performance.
Don Curry (aka deathstar13)
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