I recently modded my Jalapeno with a Noctua A9x14 fan. It's 100x quieter but runs a little warmer (up 4-5C, maybe). I have the case put together again, so it's not running in the open air (I assume it would be cooler that way).
So far, I'm pretty happy with the decrease in noise and I'm less worried about the fan exploding and damaging my heatsink (another miner posted pictures of this).
So far, I'm pretty happy with the decrease in noise and I'm less worried about the fan exploding and damaging my heatsink (another miner posted pictures of this).
I can't think of any valid reason to ever run a BFL device inside the case or with the stock fans. I'll take your BTC and burn it on paper wallets with no backups if you'd like though.
when i will receive the low noise fan, i will dismount the radiator to change this. 
But, after plug (and rebuild for europe) the supply ... this little black box emit a very (old) noise from the (very) cheap fan build on it.
I can't use this like that.
