Removing the A4000 power supply fan?

[matt3k]

Thanks for the great explanation.

I never put time into my 4000d really and that info helped.  I need to find a smaller cd rom cause I really don't know how any air gets moved in the system.

I assume that fan you recommended works in a 3000d power supply also?

If you look at the 4000 case design, it does not pull any air through the front,it can't because for the most part the front bezel seals it all off(well not perfectly,but pretty well)..
 Air enters the back of the case through the holes near the slot brackets,moves over the cards towards the front, goes around the zorro slot board at the front, and over the accelerator and into the psu and out the back of it. A little if pulled over the HD's but its almost a dead spot for air where the HD's are.

Some people add slot fans between zorro boards but it can actually fight the psu fan and make cooling worse.

One way to improve cooling is use the slot covers that are perforated with holes.It gives more area for air to come in. This works if your slots are not all full of cards.

The Noctua nf-r8 fluid bearing fan i mentioned earlier gains 5 more cfm than the stock amiga fan and is very quiet. They seem to last forever when kept clean.

[matt3k]

@Mechy

Thanks for the suggestions.

I'm using a SCSI  cdrom off the warp engine, never been a fan of ide.  Any suggestions for a SCSI model?

This box has a warp engine 040@40MHz, a cv64/3d, ariandne nic, and melody z2. It uses one of those scsi2sd cards for the hd.  Would you even bother with the smaller cd?