Vantec Aeroflow With TMD Fan

Very good balance between noise and performance – Joe

SUMMARY: Very good performance at acceptable noise levels.


Size: 74.5 x 74.5 x 60.0 mm; Fan: 70 x 15mm, 36 cfm @ 5600rpm, 38 dBA; Weight: 384 gm; Power: 3.8 watts.

The kind folks at Vantec were nice enough to send a sample of their latest heatsink, the Vantec Aeroflow (model # VA4-C7040). This is a sawed aluminum heatsink with a copper plug insert which sits on the CPU core. Airflow through the heatsink is quite good – air exits from all four sides.

The copper plug is 25mm in diameter, about 18mm long and is well finished:


When I ran my nail over it, I could not feel or hear any ridges. It sits in a “well” about 20mm deep, surrounded by the aluminum finned base.


The clip is a good one – it engages all three socket lugs. It is fairly stiff and does require a screwdriver to mount.

The fan has no identifying label (99% sure a YS Tech PD1270155B-2F) – a 70 x 25mm TMD unit (small fan hub – drive magnets in fan perimeter) – rated at 36 cfm @ 5600 rpm, 38 dBA. I found it to be tolerably quiet – I measured its noise at 59 dBA with a Radio Shack sound meter 8″ from the fan’s intake, substantially less than a Delta 38 (about 69 dBA). It’s also safe to use a motherboard fan header – 3.8 watts.

The manufacturer’s noise rating is 38 dBA, typically measured 3 feet from the fan.

In summary, an copper core – aluminum base heatsink with a very secure clip that requires a screwdriver to mount.


The Vantec Aeroflow was first tested on the CPU Die Simulator which gives results that are unaffected by motherboard influences. I then tested it on an Shuttle AK31, modified to read AMD’s on-die diode, as an example of what users might see on their systems.


Die Temp
Ambient Temp
Aeroflow, 5307 rpm
41.9 C
21.5 C
20.4 C

TEST RESULTS – Motherboard

CPU Die Temp

Ambient Temp



CPU Back Temp

XP @ 1467, Shuttle AK31

40.7 C

22.7 C



35¹ C

¹In-socket thermistor per MBM

Delta = CPU temp – Ambient Temp
C/W = Delta / CPU Watts

Interpreting C/W: For every watt (CPUw) that the CPU
consumes, the HSF will limit the CPU’s temperature rise to (C/W x CPUw)
plus the temperature at the HSF’s fan inlet. For example, at an ambient temp of 25 C, a C/W of 0.25 with a CPU radiating 50 watts means that CPU temp will increase 50 x 0.25 = 12.5 C over ambient temp, or 37.5 C. The lower the C/W, the better.

Die Simulator results place the Vantec Aeroflow in the top rank of heatsinks tested to date (Heatsink Ranking).


Vantec’s Aeroflow is a very competitive Socket A cooling solution; especially note acceptable fan noise. Overall, a nice balance between noise and performance.

Thanks again to Vantec for sending this our way.

Email Joe

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