FrostyTech Mk.II
Synthetic Thermal Heatsink Test Results
AMD Athlon64 / FX / X2 &
Sempron class heatsinks
Results
based on readings from a 38x38mm copper interface die with 125W heat
load on the K8 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 939/940/754 &
AM2 compatible CPU heatsinks | |
|
| Manufacturer: |
Model No.: |
*Fan Speed: |
125W Thermal Test
(°C) |
Noise Level (dBA) |
|
| Thermalright |
Ultra-120 |
|
12.4 |
53.7 |
| Zalman |
CNPS9700 LED |
high |
16.5 |
56.5 |
| AVC |
Z7U7414001 (stock AM2) |
high |
17.0 |
63.0 |
| Noctua |
NH-U12 |
|
17.5 |
45.4 |
| Gigabyte |
GH-PCU23-VE |
high |
17.5 |
65.6 |
| Gigabyte |
G-Power Pro |
high |
18.6 |
71.9 |
| Enzotech |
Ultra-X |
high |
18.7 |
59.1 |
| Noctua |
NH-U9 |
|
18.8 |
58.4 |
| Akasa |
AK-920 |
high |
20.2 |
52.9 |
| Apack |
Zerotherm BTF90 |
|
20.5 |
52.1 |
| Coolermaster |
Hyper6 |
high |
20.5 |
54.7 |
| Apack |
Zerotherm BTF80 |
|
21.3 |
51.9 |
| Thermaltake |
Venus 12 |
high |
21.7 |
68.1 |
| Cooljag |
SFO-Q |
high |
22.2 |
60.6 |
| ASUS |
Starice |
high |
22.8 |
67.4 |
| Zalman |
CNPS9500 AM2 |
high |
23.0 |
53.2 |
| Arctic Cooling |
Freezer 64 Pro |
|
23.2 |
50.9 |
| Coolermaster |
Aquagate Mini |
high |
23.2 |
59.2 |
| Thermaltake |
Polo 735 |
high |
23.4 |
68.0 |
| Cooljag |
SFO-H |
high |
23.6 |
60.6 |
| Alpha |
PAL-8150 |
|
23.7 |
58.9 |
| Zalman |
CNPS9500 LED |
high |
23.8 |
50.3 |
| Verax |
Helado |
|
24.3 |
36.3 |
| AVC |
Z7U3301001 (stock 939) |
high |
24.6 |
59.9 |
| Zalman |
CNPS8000 |
high |
24.8 |
57.4 |
| Gigabyte |
3D Cooler-Ultra |
high |
24.8 |
63.0 |
| OCZ |
Tempest |
|
26.0 |
51.6 |
| Scythe |
Shogun |
high |
26.0 |
45.9 |
| Rosewill |
RCX-Z2-EX |
high |
26.3 |
45.9 |
| EKL |
V8 |
high |
26.3 |
57.5 |
| Thermalfly |
F1-IACSHA |
high |
26.6 |
60.4 |
| Zalman |
FS-C77 |
|
26.7 |
56.5 |
| Gigabyte |
3D Rocket-Pro |
high |
26.9 |
56.7 |
| Zalman |
CNPS7700-Cu |
high |
27.0 |
50.7 |
| Gigabyte |
3D Cooler-Pro |
high |
27.0 |
62.5 |
| nPowerTek |
NPH-Big K8 |
|
27.8 |
54.0 |
| Akasa |
AK-922 (EVObue) |
high |
27.9 |
60.3 |
| Zalman |
CNPS7700-Cu LED |
high |
28.1 |
49.8 |
| Akasa |
AK-873 |
high |
28.2 |
59.2 |
| Spire |
SP601B3 |
|
28.3 |
48.9 |
| Ajigo |
MF064-074 |
high |
28.8 |
60.3 |
| Gigabyte |
3D-Rocket |
|
28.9 |
50.7 |
| Vantec |
Mach1 |
high |
29.2 |
56.9 |
| Thermalright |
SLK-948U |
|
29.4 |
58.8 |
| AVC |
Z7U7414001 (stock AM2) |
low |
29.6 |
48.1 |
| CoolJag |
SFO-D(18SC) |
|
29.6 |
64.0 |
| Antazone |
AS-C1000 |
|
30.2 |
57.6 |
| Arctic Cooling |
Alpine 64 |
|
30.5 |
43.9 |
| Zalman |
CNPS7000A-Cu |
high |
30.3 |
45.2 |
| Dynatron |
SK-V24 |
|
30.3 |
56.4 |
| Verax |
Quattro 1 |
high |
30.7 |
55.4 |
| Xigmatek |
AIO-S80DP |
high |
30.7 |
55.0 |
| Zalman |
CNPS7000-Cu |
high |
31.0 |
45.2 |
| Coolermaster |
Hyper48 |
|
31.7 |
43.6 |
| Rosewill |
RCX-Z1 |
high |
31.9 |
54.1 |
| Scythe |
Kama SCKK1000 |
|
31.9 |
47.5 |
| Scythe |
Samurai SCSM1000 |
high |
32.1 |
51.6 |
| Zalman |
CNPS7000B-CU |
high |
32.3 |
44.9 |
| Thermaltake |
Silentboost K8 |
|
32.3 |
49.7 |
| AVC |
Z7U3301001 (stock 939) |
low |
32.6 |
44.2 |
| Jetart |
JAX801 |
|
33.2 |
53.5 |
| Dynatron |
A22 |
|
34.5 |
44.5 |
| nPowertek |
NPH K8-1 |
|
34.6 |
52.2 |
| Ajigo |
MF043-044 (stock 754) |
|
35.0 |
45.4 |
| Arctic Cooling |
Silencer 64 Ultra TC |
|
37.5 |
55.5 |
| Gigabyte |
NeonCooler 8-BL |
|
37.7 |
42.0 |
| Titan |
TTC-K8ATB/825/SC |
|
38.7 |
63.1 |
| Akasa |
AK-860SF |
|
39.4 |
45.2 |
| Evercool |
K802-715 |
|
42.1 |
51.5 |
| Spire |
SP741B3 |
|
43.2 |
45.6 |
| Arctic Cooling |
Freezer 64 LP |
|
45.3 |
42.6 |
| Evercool |
Magic Cooler |
|
46.6 |
55.5 |
| ASUS |
Starice |
low |
92.4+ |
34.4 |
|
|
|
125W Thermal Test
(°C) |
Noise Level (dBA) |
| *Heatsinks are ranked according
to the 125W 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
125W heat load applied by the AMD K8 version of the FrostyTech synthetic thermal
test platform, the Arctic Cooling Freezer 64 LP heatsink yields a rise
above ambient temperature result of 45.3°C, with 42.6 dBA noise. While the
heatsink does operate quietly, the temperature result is poorer than the stock
socket 754 or socket 939 AMD Athlon64 heatsinks are capable of. Largely due to
its uneven base, the Arctic Cooling Freezer 64 LP heatsink manages underwhelming
results. It certainly doesn't present a compelling reason for its adoption in
its current state....
Now, getting back to that uneven copper base plate that
is route of this heatsinks' troubles. To discover the Freezer 64 LP's true thermal performance potential,
we dropped it into a milling machine and took the copper base down a fraction
of a millimeter. Only enough metal was removed to even out the surface, and
then the heatsink was retested. This time around there was scarcely any
thermal compound left between heatsink and the synthetic CPU die, and the
recorded temperatures were a full 12.7°C cooler. With a proper flat copper
base, Arctic Cooling's low profile heatsink ran at par with the stock socket
939 AVC Z7U3301001 heatsink.
Or put another way, after milling the copper base of the
Arctic Cooling Freezer 64 LP heatsink so it was flat, allowing
it to actually make good contact with the surface of the CPU test die,
the rise above ambient temperature dropped to 32.6°C. A thermal value of this level
with just 42.6 dBA noise is certainly acceptable, and makes the Freezer 64
LP a useful low profile media center thermal solution.
Bottom line, the Arctic Cooling Freezer 64 LP heatsink has the potential
to yield acceptable thermal results with little noise. However, in the state that Frostytech received
this heatsink for testing, the most critical component of the Freezer 64
LP heatsink was poorly manufactured and subsequently rendered the entire heatsink unsatisfactory.
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