> From: [EMAIL PROTECTED] > Message-ID: <[EMAIL PROTECTED]> > Date: Wed, 4 May 2005 18:51:16 EDT > Subject: Re: [PCI] 7500 Fan Configurations > > In a message David Elmo <[EMAIL PROTECTED]> writes: > > << . . . .I happen to have lots of fans lying around and am thinking one will > do to cool things a bit with a 10000 rpm Seagate I am fiddling with (I am > thinking to just have it and nothing on top, even to mount it a bit higher (on > a > stilt arrangement I can make to give plenty of room for air flow -it being on > a slider at the bottom seems a bit restrictive where all the circuitry is). > What I wanted to ask Glen, who made a really nice pdf on the subject of fan > fitting is this: did you also test temps without any extra fan at all?>> > > Yes, the fan cooled the lower bay. However, I did not take note of how much. > I was more concerned that the drive in the lower bay did not exceed it maximum > specified operating temp. That's where the analogue thermometer comes in. > > Today, I stumbled across a ebay seller auctioning off a "fan cooling kit" > that appears nearly identical to one the described in my pdf. Guess I should > have > obtained a patent for it ;)? The ebay seller claims a 7 F (4 C) drop in the > lower bay due to his cooling kit. Keep in mind this is ebay. > > Most likely the cooling differential will vary with various hard drives. I > suspect a hotter drive will see a greater temp drop than a cooler drive. > However > I have not tested this. > > One more note: > When I installed a pair of 7200 RPM 18 GB Western Digital Drive in the same > 7500 the temp in the lower bay increased about 10-15 F (5-8 C) to 110-115 F > (43-46 C) with ambient room temp at 80 F (27 C). Still well below the > specified > 125 F (52 C) maximum for those drives. > > I suggest if you only have one drive install it in the upper bay. If you want > two drives install the cooler drive in the lower bay and put the new "hot" > drive in the upper bay and add some extra cooling support. --glen (digest > mode)
thanks Glen. Looks like so tight a pack with the seagate and any other (especially because of the extra ribbon cabel with its terminator coming in from a PCI SCSI card into the bay, that I will forget about more than than the Seagate on the left. I may just ditch the floppy which I really never use these days and stick a thin 2,3 or 4 G standard 50 pin there on the right above the CD. The 7500 case is not great when it comes to room and access from PCI to drive bays! I have even thought to make my own extended case in a big box (room is really no problem, I don't live in a shoebox). Then the Seagate can live to the left of the PCI area (yes, outside the cage) and still have a ribbon through a hole cut in the left cage. But nah, maybe I won't... If only I had came across an external box for this LVD Seagate *and* the right cable I would not be doing this. But I seem to have failed utterly to get this to happen (don't ask). Having a nice terminating *ribbon* for the drive in my mits, and a card that runs it quite fast also in my mits *and* an 80 to 68 pin adaptor too... was too much a temptation and so I started fiddling and it does run well. But really, i will see if an external box and the right cable ever come up. David Elmo -- PCI-PowerMacs is sponsored by <http://lowendmac.com/> and... Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- Sonnet & PowerLogix Upgrades - start at $169 | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> PCI-PowerMacs list info: <http://lowendmac.com/lists/pci-powermacs.shtml> --> AOL users, remove "mailto:"; Send list messages to: <mailto:[email protected]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive:<http://www.mail-archive.com/pci-powermacs%40mail.maclaunch.com/> iPod Accessories for Less at 1-800-iPOD.COM Fast Delivery, Low Price, Good Deal www.1800ipod.com
