FrostyTech Mk.II
Synthetic Thermal Heatsink Test Results
Intel Pentium D / Extreme
Edition & Quad Core class heatsinks tested at 150W
Intel Core
2 Duo / Pentium 4 / Celeron class heatsinks tested at
85W
Results based on readings
from a 30x30mm copper interface die with 150W and 85W heat loads
applied on the LGA775 version of the Mk.II Test Platform.
Temperature results listed for each heatsink were calculated by
determining the rise over ambient temperatures at time of test.
Information on Frostytech's test methodology is available
here. |
 |
| Socket 775
compatible CPU heatsinks | |
| manufacturer: |
model no.: |
fan speed: |
150w
thermal test*
(°c) |
85w
thermal test
(°c) |
noise level (dba) |
|
| Thermalright |
Ultra 120 |
|
17.8 |
10.6 |
53.7 |
| Zalman |
CNPS9700 LED |
high |
19.0 |
10.4 |
56.5 |
| Enzotech |
Ultra-X |
high |
20.0 |
8.5 |
59.1 |
| Apack |
Zerotherm BTF90 |
|
21.8 |
12.7 |
52.1 |
| Apack |
Zerotherm BTF80 |
|
22.8 |
13.9 |
51.9 |
| Akasa |
AK-920 |
high |
24.3 |
14.1 |
52.9 |
| Thermalfly |
F1-IACSHA |
high |
29.0 |
18.3 |
60.4 |
| Thermalfly |
I75DUB |
high |
29.5 |
16.8 |
68.5 |
| Zalman |
CNPS9500 AT |
|
29.6 |
17.3 |
53.3 |
| Alpha Novatech |
PRE9060M92P |
high |
29.9 |
18.5 |
51.5 |
| Akasa |
AK-961 |
|
30.0 |
18.7 |
60.7 |
| nPowertek |
NPH-775-1 |
|
30.1 |
18.8 |
50.1 |
| Sunon |
Waturbo |
|
30.6 |
18.3 |
57.5 |
| Apack |
CF800 |
high |
31.4 |
20.7 |
48.4 |
| Thermaltake |
Jungle512 |
high |
31.6 |
20.4 |
60.8 |
| Xigmatek |
AIO-S80DP |
high |
32.4 |
21.4 |
55.0 |
| Rosewill |
RCX-Z2 |
|
32.6 |
19.3 |
59.9 |
| Zalman |
CNPS7700-Cu |
high |
32.9 |
19.7 |
50.7 |
| Apack |
CF900 |
high |
32.9 |
20.3 |
48.3 |
| Evercool |
PT02-9232CP |
|
33.3 |
19.9 |
63.3 |
| Zalman |
CNPS7700-Cu LED |
high |
33.5 |
20.6 |
49.8 |
| Intel |
Stock Pentium D |
high |
33.8 |
20.7 |
47.5 |
| nPowerTek |
SF775-2 |
high |
34.7 |
21.1 |
64.6 |
| Akasa |
AK-960E |
|
36.1 |
21.4 |
56.3 |
| Thermalfly |
I75DUH |
|
37.8 |
22.8 |
48.7 |
| Cooljag |
OAK-H |
high |
38.5 |
22.9 |
55.7 |
| Cooljag |
OAK-H2 |
high |
38.6 |
24.1 |
55.6 |
| LS Cable |
SHS-T700 |
|
38.7 |
22.8 |
48.5 |
| Intel |
Stock Pentium D |
low |
40.3 |
23.9 |
40.5 |
| Cooljag |
OAK-H |
low |
95.3 |
54.5 |
29.5 |
|
|
|
150w
thermal test
(°c) |
85w
thermal test
(°c) |
noise level (dba) |
| *heatsinks are ranked according to
the 150w thermal test results column (rise over ambient temp.). low
temperatures with low noise levels are considered best. for reference
heatsinks with variable-speed fans, only the high speed (12v) fan test
result is included in the comparison sheet; more detailed results reside
in each specific heatsink review. |
With a 150W heat load
applied by the Intel LGA775 synthetic
thermal test platform, the Rosewill
RCX-Z2 heatsink achieves a very nice rise above ambient temperature of 32.6°C.
The heatsink's 90mm fan was spinning at 3400RPM during these tests, and
so noise levels were in the 59.9 dBA range - which is a little loud. A heat load
of 150W is roughly approximate to a stressed Intel Pentium D / Extreme Edition
or Core 2 Quad class processor. Compared to the stock Intel Pentium D heatsink
listed in the above chart, the Rosewill RCX-Z2 was about the same in terms
of temperature.
The Rosewill
RCX-Z2 heatsink was next tested with an 85W heat load, and under those condition
it maintained a temperature of 19.3°C rise over ambient.
One of the side benefits to a heatsink structure like this, with
an open fan and widely spaced cooling fins, is that exhaust air is directed right
at components outside the CPU socket. Critical items like the Northbridge,
voltage regulating MOSFETs, and memory can all reach elevated temperatures if
there is insufficient airflow to cool things down.
The Rosewill RCX-Z2 heatsink
can certainly operate satisfactorily at its stock speed setting. Looking at the results list for the
150W test, when the 90mm fan on the Rosewill RCX-Z2
heatsink spins at full speed it is as good as the Intel solution,
although significantly louder which is unfortunate.
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