Reeven Kelveros & Arcziel CPU Coolers

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Reeven Arcziel: Stock Fan Measurements

Specifications: Reeven Arcziel Stock Fan
Manufacturer
Power Rating
2.52 W
Model Number
RM9225S25C-P
Airflow Rating
51.15 CFM
Bearing Type
Sleeve
Speed Rating
2500 RPM
Corners
Open
Noise Rating
32.3 dBA
Frame Size
92 x 92 x 25 mm
Header Type
4-pin
Fan Blade Diameter
85 mm
Starting Voltage
< 5.0 V
Hub Size
32 mm
Weight
80 g
Data in green cells provided by the manufacturer or observed; data in the blue cells were measured.

The Arcziel's stock 92 mm fan is a fairly high speed sleeve bearing model, rated for 2500 RPM. The design is unremarkable, with seven hook style blades intersected by straight struts.

Stock Fan Measurements
Voltage
Speed
SPL@1m
12V
2570 RPM
33 dBA
9V
1920 RPM
25 dBA
8V
1640 RPM
21~22 dBA
7V
1370 RPM
16 dBA
6V
1100 RPM
13 dBA
Measuring mic positioned 1m at diagonal angle from the center of the heatsink.
Ambient noise level: 10~11 dBA.

As one would expect of a 2500 RPM model, the Arcziel's stock fan is quite loud. It becomes quieter when undervolted, but the fan's character changes depending on the level. At 9V and above, it had a typical buzzy and turbulent nature. At 8V, the turbulence was transformed into an annoying drone. At 7V it produced 16 dBA@1m which is considered quiet by most users, but the motor was audibly humming and rattling when observed at close proximity.


At 7V, the Arcziel stock fan generates 16 dBA@1m.

The hum emitted by the fan at 7V has frequency of about 170 Hz, fairly low pitched.

Reeven Arcziel: Test Results

Reeven Arcziel
Fan Voltage
Fan Speed
SPL@1m
°C Rise above Ambient
CPU
VRM
RAM
Stock Fan
12V
2570 RPM
33 dBA
34
22
21
9V
1920 RPM
25 dBA
38
30
25
8V
1640 RPM
21~22 dBA
40
34
26
7V
1370 RPM
16 dBA
42
38
27
6V
1100 RPM
13 dBA
47
41
27
Reference Nexus 92mm Fan
12V
1470 RPM
17 dBA
41
35
23
9V
1150 RPM
13 dBA
52
47
31

For such a large cooler (at least by our small heatsink testbed standards), the Arcziel's performance is underwhelming but at least it doesn't hit an apex like the Kelveros. The fan speed had a significant impact on temperature, creating a 13°C range between 6V and 12V operation. Interestingly, this is one of the few heatsinks where our reference fan actually fared worse, producing a thermal rise above ambient 5°C higher than the stock fan while emitting 13 dBA@1m.

Heatsink Comparison Tables

°C rise Comparison (CPU Temperature)
SPL (dBA@1m)
20
19
18
17
16
15
14
13
12
Noctua NH-L12
(both fans)
33
-
-
34
-
35
-
36
Noctua NH-L12
(ref. 120mm fan)
-
-
-
-
-
34
-
37
Scythe Big Shuriken 2 Rev.B
(ref. 120mm fan)
-
-
-
-
-
36
-
39
Noctua NH-L12
(120mm fan)
-
-
37
-
-
38
-
39
42
Scythe Big Shuriken
(ref. 120mm fan)
-
-
-
-
-
41
-
43
Scythe Big Shuriken 2 Rev.B
-
39
-
-
-
43
-
48
Reeven Arcziel
-
-
-
-
42
-
-
47
-
Scythe Samurai ZZ
(ref. 92mm fan)
-
-
-
-
-
-
44
-
51
Reeven Arcziel
(ref. 92mm fan)
-
-
-
41
-
-
-
52
-
Scythe Samurai ZZ
-
-
45
-
-
46
-
52
Noctua NH-L12
(92mm fan)
42
-
44
-
47
-
51
57
Scythe Big Shuriken
43
-
-
-
-
46
-
61
Scythe Kozuti
-
-
57
-
-
62
-
65
Reeven Vanxie
-
66
-
-
-
-
77
-
F

Initially we thought it unfair to test such a big cooler on our small heatsink testbed, but our fears turned out to be unjustified. Like the Kelveros, the Arcziel doesn't live up to expectations, being outperformed by the Big Shuriken 2 and Noctua NH-L12, despite a huge size mismatch.

°C rise Comparison (VRM Temperature)
SPL (dBA@1m)
20
19
18
17
16
15
14
13
12
Noctua NH-L12
(both fans)
17
-
-
19
-
21
-
23
Noctua NH-L12
(ref. 120mm fan)
-
-
-
-
-
20
-
25
Scythe Big Shuriken
(ref. 120mm fan)
-
-
-
-
-
25
-
29
Scythe Big Shuriken 2 Rev.B
(ref. 120mm fan)
-
-
-
-
-
27
-
31
Noctua NH-L12
(120mm fan)
-
-
24
-
-
26
-
27
32
Scythe Big Shuriken 2 Rev.B
-
29
-
-
-
34
-
39
Noctua NH-L12
(92mm fan)
28
-
31
-
33
-
38
43
Scythe Samurai ZZ
(ref. 92mm fan)
-
-
-
-
-
-
36
-
43
Reeven Arcziel
-
-
-
-
38
-
-
41
-
Scythe Big Shuriken
28
-
-
-
-
30
-
47
Reeven Arcziel
(ref. 92mm fan)
-
-
-
35
-
-
-
47
-
Scythe Kozuti
-
-
36
-
-
40
-
45
Scythe Samurai ZZ
-
-
38
-
-
39
-
47
Reeven Vanxie
-
45
-
-
-
-
56
-
F

VRM cooling is even worse on the Arcziel as it has a substantial fin-stack sitting up high above the motherboard, and the fan too is elevated, making it very difficult for airflow to make its way down over the areas around the CPU socket.



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