Variable speed fan – Joe
SUMMARY: A fine choice for variable speed Socket A cooling.
The Volcano 11+ ships with parts to run
- At full speed (4800 rpm)
- With the fan controlled by temperature
- By manually adjusting fan speeds with a rheostat
- Two manual fan controllers – one for PCI slot, one for 5¼” drive bay
- Temperature sensor for fan temp control
- Four pin to 3 pin power plug
- Screws, thermal tape, jumper and grease
The instruction sheet that comes with it is well done and very easy to follow.
The Volcano 11+ ships with a fan with speeds that can be controlled by a temperature probe. At 20 ºC, it runs at 1300 rpm and at 55 ºC, 4800 rpm. Noise is spec’d at 17 dB @ 1300 rpm to 48 dBA @ 4800 rpm. I measured its noise with a Radio Shack sound meter 8″ from the fan’s intake. At 1395 rpm – <50 dBA; at 3008 rpm - 55 dBA and at 4800 rpm - 75 dBA¹.
Its not safe to use a motherboard fan header – at its highest speed, it draws 8.4 watts – using the power plug adapter is a must.
The base is fairly well finished:
However, I could see polishing marks and when I ran my nail over it, I could slightly feel ridges.
The clip engages all three socket lugs and is very secure – it does take a screwdriver to mount.
The Volcano 11+ was tested on the CPU Die Simulator (75.4 watts) which gives results that are unaffected by motherboard influences.
|Volcano 11+, 4834 rpm,68 dBA|
|Volcano 11+, 3008 rpm, 55 dBA|
|Volcano 11+, 1395 rpm, <50 dBA|
C/W = Delta / CPU Watts
Interpreting C/W: For every watt (CPUw) that the CPU
consumes, the HSF will limit the CPU’s temperature rise to (C/W x CPUw)
plus the temperature at the HSF’s fan inlet. For example, at an ambient temp of 25 C, a C/W of 0.25 with a CPU radiating 50 watts means that CPU temp will increase 50 x 0.25 = 12.5 C over ambient temp, or 37.5 C. The lower the C/W, the better.
Quite a range! As always, low noise = low cooling performance. Die Simulator results place the Volcano 11+, at its highest speed, in the mid rank of heatsinks tested to date (Heatsink Ranking).
Thermaltake’s Volcano 11+ is a fine choice for variable speed Socket A cooling, offering users maximum flexibility to control CPU temps.
¹Note that manufacturers measure fan noise usually 3 feet from the fan.