Although you won't see any extreme designs in Spire's cooling systems, they do promise to deliver good performance and especially at an affordable price. A big advantage of these designs is their size. They are small enough to allow adequate air flow throughout the case, leaving more room for other components to also "breath" (PSU, VGA cards). The installation process is very simple and even novice users will have no problems fitting these fansinks on their motherboards.

The KestrelKing V fansink is a good alternative to the stock cooler, but there are no major differences in performance. On the other hand, the blue fan on the top looks pretty nice and it could be even "prettier" if it had a led lighting it up. Of course, you can always change the blue fan with any other fan you like.

The performance of the KestrelKing VI fansink was better than we expected for such a small fan. Even smaller than the KestrelKing V, but better in cooling performance. SpeedFan reported almost 10°C drop in temperature, even when our test system was overclocked. The KestrelKing VI fansink has the advantage of increasing its rotation speed according to the CPU temperature, and although in idle mode the CPU cooler was very quiet, under heavy load, the rotation speed rises at 6000RPM and the noise level increases respectively.

The price of the KestrelKing V is only US$13.95, making it a very attractive buy. The price of the KestrelKing VI is US$30.00, over double the price of the KestrelKing V, but considering the cooling performance it offers, it is surely worth the extra money.

Pros:
- Low Noise
- Small size and easy to install
- Easy installation
- Acceptable performance from the KestrelKing V, very good performance from the KestrelKing VI
- Low price

Cons:
- Not recommended for enthusiast overclockers

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