Zalman 9300AT: Not me too, but me again

Cooling
Viewing page 4 of 6 pages. Previous 1 2 3 4 5 6 Next

TESTING

Some basic physical measurements have been added to our test routine.

Zalman CNPS9300 AT: SPCR Measurements
Weight
400g (heatsink alone)
420g (heatsink, mounting clip and screws)
Fin thickness
~ 0.17mm
Fin spacing
~ 2.16mm (outer edge)
Vertical Clearance (northbridge)
not an issue
Overhang
(power supply)
~4 mm (this will depend on the distance from the CPU socket to the edge of the PCB)

As the fin spacing is not uniform through the heatsink, measuring it has limited comparative value and so we have omitted it from our fin thickness and spacing comparison table.

Comparison: Fin Thickness & Spacing
Heatsink
Fin Thickness
Fin Spacing
Scythe Ninja
0.31 mm
3.95 mm
Thermalright HR-01 Plus
0.45 mm
3.15 mm
Noctua NH-U12P
0.44 mm
2.63 mm
Noctua NH-C12P
0.47 mm
2.54 mm
Xigmatek HDT-S1283
0.33 mm
1.96 mm
Zerotherm Zen FZ120
0.37 mm
1.80 mm
Thermalright Ultra-120
0.45 mm
1.42 mm

Testing was done according to our unique heatsink testing methodology, and the reference fan was profiled using our standard fan testing methodology. A quick summary of the components, tools, and procedures follows below.

Key Components in Heatsink Test Platform:

  • Intel Pentium D950 Presler core. TDP of 130W; under our test load, it measures 78W including efficiency losses in the VRMs.
  • ASUS P5LD2-VM motherboard. A basic microATX board with integrated graphics and plenty of room around the CPU socket.
  • Samsung MP0402H 40GB 2.5" notebook drive
  • 1 GB stick of Corsair XMS2 DDR2 memory.
  • FSP Zen 300W fanless power supply.
  • Arctic Silver Lumière: Special fast-curing thermal interface material, designed specifically for test labs.
  • Nexus 120 fan (part of our standard testing methodology; used when possible with heatsinks that fit 120x25mm fans)

Test Tools

  • Seasonic Power Angel for measuring AC power at the wall to ensure that the heat output remains consistent.
  • Custom-built, four-channel variable DC power supply, used to regulate the fan speed during the test.
  • PC-based spectrum analyzer: SpectraPlus with ACO Pacific mic and M-Audio digital audio interfaces.
  • Bruel & Kjaer (B&K) model 2203 sound level meter (SLM)
  • Anechoic chamber with ambient level of 11 dBA or lower
  • Various other tools for testing fans, as documented in our standard fan testing methodology.

Software Tools

  • SpeedFan 4.32, used to monitor the on-chip thermal sensor. This sensor is not calibrated, so results are not universally applicable.
  • CPUBurn P6, used to stress the CPU heavily, generating more heat than most real applications. Two instances are used to ensure that both cores are stressed.
  • Throttlewatch 2.01, used to monitor the throttling feature of the CPU to determine when overheating occurs.

Noise measurements were made with the fan powered from the lab's variable DC power supply while the rest of the system was off to ensure that system noise did not skew the measurements.

Load testing was accomplished using CPUBurn to stress the processor, and the graph function in SpeedFan was used to make sure that the load temperature was stable for at least ten minutes. The stock fan was tested at various voltages to represent a good cross-section of its airflow and noise performance.



Previous 1 2 3 4 5 6 Next

Cooling - Article Index
Help support this site, buy from one of our affiliate retailers!
Search: