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 |
| Thermalright |
Ultra-90 |
high |
19.6 |
13.0 |
56.2 |
| Enzotech |
Ultra-X |
high |
20.0 |
8.5 |
59.1 |
| Apack |
Zerotherm BTF90 |
|
21.8 |
12.7 |
52.1 |
| Xigmatek |
HDT-S963 |
high |
21.9 |
13.7 |
50.2 |
| Akasa |
AK-965 |
high |
22.2 |
13.8 |
48.1 |
| Apack |
Zerotherm BTF80 |
|
22.8 |
13.9 |
51.9 |
| Cooljag |
Falcon 92-AL |
high |
23.2 |
14.2 |
52.1 |
| Rosewill |
RCX-Z3 |
high |
23.3 |
14.0 |
58.6 |
| Scythe |
Mine Rev. B |
|
23.6 |
15.0 |
36.8 |
| Cooljag |
Falcon 92-Cu |
high |
23.6 |
14.8 |
52.8 |
| Akasa |
AK-920 |
high |
24.3 |
14.1 |
52.9 |
| Asus |
Arctic Square |
high |
24.9 |
14.9 |
44.9 |
| Akasa |
AK-922 (EVObue) |
high |
25.5 |
15.4 |
60.3 |
| 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 |
| Scythe |
Kama Cross |
|
30.0 |
18.8 |
40.0 |
| Akasa |
AK-961 |
|
30.0 |
18.7 |
60.7 |
| Rosewill |
RCX-Z2-EX |
high |
30.1 |
18.7 |
45.9 |
| nPowertek |
NPH-775-1 |
|
30.1 |
18.8 |
50.1 |
| Sunon |
Waturbo |
|
30.6 |
18.3 |
57.5 |
| Akasa |
AK-965 |
low |
31.4 |
19.8 |
34.0 |
| Apack |
CF800 |
high |
31.4 |
20.7 |
48.4 |
| Thermaltake |
Jungle512 |
high |
31.6 |
20.4 |
60.8 |
| Coolage |
Frozen Orb F0-Z924AL |
high |
32.0 |
19.9 |
48.9 |
| Xigmatek |
AIO-S80DP |
high |
32.4 |
21.4 |
55.0 |
| Scythe |
Katana II |
|
32.5 |
18.6 |
37.9 |
| 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 |
| Intel |
Stock Core 2 Duo |
|
49.2 |
29.0 |
36.7 |
| Spire |
Fourier IV SP607B3-C |
|
63.6 |
18.7 |
60.2 |
| 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. |
Frostytech tests heatsinks with two thermal values
that represent the upper limits of single and multi-core Intel processor on
the market today. With a 150W heat load applied by the Intel LGA775
version of FrostyTech's synthetic
thermal test platform, the Akasa AK-965 heatsink yielded a
rise above ambient temperature of 22.2°C (48.1dBA) at the fans' normal speed of
2500RPM. The CPU equivalent of this test would be an Intel Core 2 Quad, Pentium
D/Extreme Edition class processor.
The speed of the 95mm PWM fan on the Akasa AK-965
was then reduced to ~600RPM, and this time around the the test temperature held steady
at 31.4°C over ambient. Noise levels fell to a very quiet
34.0dBA.
Next, the Akasa AK-965 heatsink was
tested on the synthetic thermal test platform with an 85W heat load; akin to a Core
2 Duo processor. This resulted in a very nice result of
13.8°C over ambient at default fan speed, and 19.8°C at a reduced fan
speed.
When operated with its fan at full speed the Akasa AK-965 heatsink is a great performer. In fact, it places
within the top 10 positions in the reference list above, while generating less
than 50 dBA noise! Akasa have built a great Intel LGA775 heatsink here, so if
you're shopping around for a new Core 2 Duo heatsink be sure to include the
AK-965 on your short list of choices.
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