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 |
| Thermalright |
Ultra-90 |
high |
18.2 |
56.2 |
| Gigabyte |
G-Power Pro |
high |
18.6 |
71.9 |
| Enzotech |
Ultra-X |
high |
18.7 |
59.1 |
| Noctua |
NH-U9 |
|
18.8 |
58.4 |
| Evercool |
Buffalo HPEA-10025 |
|
19.5 |
50.2 |
| Cooljag |
Falcon 92-AL |
high |
19.8 |
52.1 |
| Akasa |
AK-876 |
high |
20.0 |
48.2 |
| Xigmatek |
HDT-S963 |
high |
20.1 |
50.2 |
| Akasa |
AK-920 |
high |
20.2 |
52.9 |
| Scythe |
Mine Rev.B |
|
20.4 |
36.8 |
| Cooljag |
Falcon 92-Cu |
high |
20.4 |
52.8 |
| Apack |
Zerotherm BTF90 |
|
20.5 |
52.1 |
| Coolermaster |
Hyper6 |
high |
20.5 |
54.7 |
| Asus |
Arctic Square |
high |
20.9 |
38.3 |
| 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 |
| Scythe |
Kama Cross |
|
25.1 |
40.0 |
| 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 |
| Rosewill |
RCX-Z3 |
high |
26.5 |
58.6 |
| 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 |
| Akasa |
AK-876 |
low |
28.0 |
34.1 |
| Zalman |
CNPS7700-Cu LED |
high |
28.1 |
49.8 |
| Akasa |
AK-873 |
high |
28.2 |
59.2 |
| Scythe |
Katana II |
|
28.3 |
37.9 |
| 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 |
| 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 |
| 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 |
| Spire |
Fourier IV SP607B3-C |
|
38.4 |
60.2 |
| 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 frostytech's synthetic
thermal test platform, the Akasa AK-876 heatsink yields a rise above ambient temperature of 20.0°C (48.2 dBA) will the fan operates at the nominal speed of 2500RPM. Once the 95mm PWM fan speed is then reduced to ~600/800RPM, the AK-876 heatsink is able to maintain a temperature of 28.0°C over ambient (noise 34.1
dBA).
When operated with its fan at full speed the Akasa AK-876 heatsink is a very
gook AMD K8 heatsink, although it's up against some very serious
competition from the likes of Thermalright, Zalman, AVC and others. The Noctua NH-U12 in particular runs both cooler
and quieter, which is quite a feat.
Still,
given the 80+ heatsinks Frostytech.com has compared the Akasa AK-876
against, it certainly handles itself very well. At its lowest fan
speed setting, the AK-876 performs dead middle of
the road - again an impressive result given its 34 dBA noise level. Akasa have
very good lower noise AMD K8 heatsink here, but the AK-876 is by no means the best
Frostytech has tested for this platform. Instead, the Akasa AK-876 offers a very good mix
of great temperatures and reduced noise output.
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