The Spire SP741B3 Diamond CoolII's performance can be summed up in three words: lower noise level. Or lower than the stock fan anyway. Unfortunately, the Diamond coolII could not produce much of a temperature drop (only 2°C drop in idle mode). However, the 2300RPM makes the cooler more of a silent solution compared to the stock. The UV reactive fan occupies a large part of the viewable area of the cooler, so what we have is a good cooling solution for the average user.

up and working...

Some words about the installation. The procedure takes all of 10mins (including removal of the original stock cooler), while backplate removal is not always necessary, being motherboard dependent. So, with some thermal compound and a screwdriver, the task can be described as plain and easy.

The price for the SP741B3 Diamond Cool II is close to €34.

Pros:
- Low noise
- UV reactive diamond fan design
- Easy to install

Cons:
- No significant temperature drop

Performance:
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Installation:
Value for money: