Vantec CCK-7025 P4 Heatsink

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An OK P4 heatsink for “normal” cooling – Joe

SUMMARY: An OK heatsink balancing performance vs noise.


Fan: 70mm, 33 cfm @ 4000 rpm.

The kind folks at Vantec were nice enough to send a sample of their latest P4 copper heatsink, the Vantec CCK-7025, also called the “Copper X 478”. It features 53 thin fins (about as thick as an index card) soldered onto a 4 mm thick copper base, measuring 67 x 83mm – lots of cooling surface area.

The fan is an YS Tech Model #FD1270255B-2F – a 70 x 25mm unit rated at 33 cfm @ 4000 rpm. I found it to be tolerably quiet – I measured its noise at 60 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 (2.3 watts).

Considering its design and the potential for better performance, I also tested it with a YS Tech Model #FD1270259B-2F – a 70 x 25mm unit rated at 6.24 watts, 46 cfm @ 6000 rpm. I measured its noise at 67 dBA with a Radio Shack sound meter 8″ from the fan’s intake, close to a Delta 38 (about 69 dBA). The fan I had ran at 6585 rpm – about 50 cfm.

The base is not particularly well finished:


When I ran my nail over it, I could feel and hear ridges – lapping this base makes sense and you might gain a degree or two in performance.

The clip was a breeze to mount – push down on one side, engage the retention base, then push down on the other and it’s on – simple and secure.

In summary, an all-copper heatsink with a very secure, easy to use clip.


I tested the Vantec on an Acorp 4S845A motherboard with a modified P4 1500 to read CPU case temps.

TEST RESULTS – Motherboard

CPU Case Temp

Ambient Temp



MBM Temp

Acorp 4S845A, 4274 rpm

38.1 C

24.2 C



35 C

Acorp 4S845A, 6585 rpm

35.5 C

23.8 C



32 C

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.

Motherboard results place the CCK-7025 in the mid-low rank of heatsinks tested (Heatsink Ranking). With the YS Tech fan, it moves to the upper rank.


This is the kind of heatsink I would use when building a system for a friend – fairly quiet and good performance. With some lapping and a beefier fan, it could be a good performer for more aggressive applications, although at the expense of much higher noise.

Thanks again to Vantec for sending this our way.

Email Joe