Vantec 1U #CCK-6012

Overclockers is supported by our readers. When you click a link to make a purchase, we may earn a commission. Learn More.

A 1U, all copper heatsink — Joe

SUMMARY: A heatsink for the 1U market.

Vantec 1U

Size: 60 x 62 x 23mm high; Fan: 60 x 10mm, 21 cfm @ 4800 rpm; Weight: 220 gms.

The good guys at Vantec were nice enough to send a sample of their 1U heatsink, the Vantec CCK-6012. This is a sawed heatsink – its fins are cut from a copper block.

Heatsinks that meet 1U specs face a very difficult challenge – the height restrictions are such that fin height is severely compromised; consequently, there is a struggle to squeeze as much surface area and airflow into the package as possible. These heatsink are not intended for overclocked CPUs.

The base


is very nicely done – flat and polished.

The fan is an Delta Model #R127015DU – a 60 x 10mm unit rated at 21 cfm @ 4800 rpm. I found it to be quiet – I measured its noise at 57 dBA with a Radio Shack sound meter 8″ from the fan’s intake, substantially less than a YS Tech 26 (about 62 dBA).

The clip does not require a screwdriver to mount onto the socket – it was easy to use and is a plus.

In summary, a fairly conventional copper, sawed heatsink with a secure and easy to use clip.


The Vantec CCK-6012 was tested on the CPU Die Simulator which gives results that are unaffected by motherboard influences.



Die Temp

Ambient Temp



Vantec 1U #CCK-6012

70.2 C

19.2 C

51.0 C


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

Interpreting C/W: For every watt the CPU radiates, the heatsink will cool the core by the (C/W x watts) plus ambient temp. For example, at an ambient temp of 25 C, a C/W of 0.25 with a CPU radiating 50 watts means that the CPU core temp will be 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 CCK-6012 in the bottom ranks of heatsinks (Heatsink Ranking). Vantec’s published spec is 0.78 C/W, so we found it to perform better than spec.


The Vantec CCK-6012, with some more airflow, might perform better, but as usual, increased airflow = increased noise. The 1U market is a very tough challenge.

Thanks again to Vantec for sending this our way.

Email Joe


Leave a Reply

Your email address will not be published.