AMD Wraith: Upgraded Stock Cooler

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Before thermal testing, we took some basic physical measurements of the product(s) for comparison.

Approximate Physical Measurements
340 g (heatsink only)
460 g (with stock fan and shroud)
Height 82 mm
Fin count 50
Fin thickness
0.29 mm
Fin spacing
1.45 mm
Vertical Clearance*
* measured from motherboard PCB to bottom fin of heatsink

Small Heatsink Comparison:
Average Fin Thickness & Spacing
Fin Thickness
Fin Spacing
Scythe Big Shuriken 2 Rev.B
0.29 mm
1.13 mm
Noctua NH-L9i
0.44 mm
1.16 mm
Scythe Big Shuriken
0.33 mm
1.19 mm
Reeven Vanxie
0.28 mm
1.39 mm
Reeven Arcziel
0.28 mm
1.41 mm
AMD Wraith
0.29 mm
1.45 mm
Cooler Master GeminII M4
0.29 mm
1.46 mm
Noctua NH-L12
0.49 mm
1.51 mm
Scythe Kozuti
0.12 mm
1.69 mm
Noctua NH-D9L
0.40 mm
1.70 mm
Noctua NH-U12S
0.45 mm
1.72 mm
Scythe Samurai ZZ
0.33 mm
1.74 mm
Phanteks PH-TC14S
0.41 mm
1.76 mm
Thermalright TRUE Spirit 120M
0.43 mm
1.78 mm
Cryorig C1
0.42 mm
1.78 mm
Noctua NH-U9S
0.40 mm
1.80 mm
Prolimatech Panther
0.53 mm
1.80 mm
SilverStone Argon AR02
0.30 mm
1.85 mm
Phanteks PH-TC90LS
0.47 mm
1.90 mm

Larger heatsinks are tested on our LGA1366 heatsink testing platform, while smaller coolers tackle our LGA1155 heatsink testing platform. Unfortunately AMD stock coolers are not cross-compatible so we've set up an AMD testing platform specifically for the Wraith. A summary of the test system and procedure follows.

AMD Heatsink Test Platform:

  • AMD A10-6800K APU - 4.1 GHz, 32nm, 100W, socket FM2
  • Asus F2A85-M Pro motherboard - AMD A85X chipset, microATX
  • Kingston HyperX LoVo memory, 2 x 4GB, DDR3-1600 in dual channel
  • Kingston HyperX 3K solid-state drive - 120GB, 2.5-inch, SATA 6 Gbps
  • Seasonic X-460FL power supply - 460W, ATX, 80Plus Platinum, passively cooled
  • Noctua NT-H1 thermal compound

The systems are silent under the test conditions, except for the CPU cooling fan(s).

Normally, our reference fans are used whenever possible, the measured details of which are shown below.

Reference Noctua 140mm fan
Anechoic chamber measurements
1250 RPM
28~29 dBA
990 RPM
21 dBA
880 RPM
18 dBA
770 RPM
15~16 dBA
660 RPM
13 dBA

Reference Nexus 120 mm fan
Anechoic chamber measurements
1080 RPM
16 dBA
880 RPM
13 dBA
720 RPM
12 dBA

Reference Nexus 92 mm fan
Anechoic chamber measurements
1470 RPM
17 dBA
1280 RPM
14 dBA
1010 RPM
12 dBA

Measurement and Analysis Tools

  • Extech 380803 AC power analyzer / data logger for measuring AC system power.
  • PC-based spectrum analyzer: SpectraPlus with ACO Pacific mic and M-Audio digital audio interfaces.
  • Anechoic chamber with ambient level of 11 dBA or lower
  • Various other tools for testing fans, as documented in our standard fan testing methodology.
  • SpeedFan, used to monitor the on-chip thermal sensors. The sensors are not calibrated, so results are not universally applicable.
  • Prime95, used to stress the CPU heavily, generating more heat than most real applications. All instances are used to ensure full stress.
  • CPU-Z, used to monitor the CPU speed to determine when overheating occurs.

Noise measurements are made with the fans powered from a separate, fanless system. Load testing was accomplished using Prime95 to stress the processor, and the graph function in SpeedFan was used to ensure that the load temperature is stable for at least ten minutes. The temperature recorded is the highest single core reading. The stock fans were tested at various voltages to represent a good cross-section of airflow and noise performance.

The ambient conditions during testing were 10~11 dBA and 21~23°C.

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