As you can see from the picture below the fan due to its size doesn’t fit directly over the A4 tube, it over hangs slightly. The gap was letting a lot of air out rather then pushing it into the tube.

A4 showing Silverstone FHP141-VF Gap
A4 showing Silverstone FHP141-VF Gap

 

Only one this can fix an issue like this, TAPE!

A4 Silverstone FHP141-VF with Tape covering gap
A4 Silverstone FHP141-VF with Tape covering gap

 

Not the prettiest of jobs but did the trick, we now have no air escaping from the gaps. What has this done for our A4 and its stats?

Amazingly its reduced the dB level by 2.3dB and changed the pitch of the sound to a more comfortable level.

A4 Silverstone FHP141-VF Noise level with tape
A4 Silverstone FHP141-VF Noise level with tape

 

 

And the temps? Well…. not a great deal, 1c on one of the blades but this could be put don’t to the ambient temps or even the quality of the thermometer in the miner

A4 with Silverstone FHP141-VF temps with tape
A4 with Silverstone FHP141-VF temps with tape

 

Conclusion

If your not worried about looks then I think it is worth adding the tape to reduce the noise and a little heat. If you are worried about looks, buy some nice tape and spend some time making it look good.