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 |
| 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 |
| 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 |
| 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 |
| 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 |
| Zalman |
CNPS7000-Cu |
high |
31.0 |
45.2 |
| Coolermaster |
Hyper48 |
|
31.7 |
43.6 |
| 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 |
| 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 |
| 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 FrostyTech synthetic
thermal test platform, the
Thermalright SLK-948U heatsink yields a rise above ambient temperature of 29.4°C, with
58.8 dBA noise generated. The results shown
here are valid only with the 92mm Zalman fan we used; if
you swap it out
for another fan in an effort to reduce noise the thermal values may change as
well.
On the whole, the thermal performance of the Thermalright SLK-948U heatsink
is slightly lower than the stock socket 393 AVC Z7U3301001 heatsink (a difference
of ~5°C) and somewhat better than stock socket 754 Ajigo MF043-044 heatsink (a difference of
~6°C).
It isn't
much of a surprise to see that the Thermalright
SLK-948U heatsink still handles the heat
on Frosty's synthetic K8 test platform in this day and age. Obviously though, by
current day standards it is a middle of the road heatsink. By
way of comparison, note the thermal performance of Thermalright's Ultra-120 heatsink...
There isn't
too much more to say about the old Thermalright SLK-948U heatsink, the
thermal performance is remarkably good for its age, the design is unique, and
the materials are all geared towards cooling. 'nuff said.
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