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i have the new MBP with the 7200 rpm, and i can say that i have pretty much next to never heard it. I do all video work with huge files and 3d work; and still i have never really heard it. I have a few externals, a WD 500g, and a little WD 5400 rpm and they are both much much much louder.
 
I have the Penryn mbp w/ 200gb 7200rpm, and I don't even notice any sound coming from it unless I put my ear right up to the machine. Even then, it's just a quiet hum.
 
Definitely quieter than my old mbp. And compared to the Powerbooks I have, "HA!" is all I have to say.
 
Can anyone tell me which ones (brands) apple uses and where we can find out which we have?
As far as I know for standard 5400 drives Apple still uses Fujitsu. As is posted above, the 7200s are Hitachi's. If you want to see which one you have, go to :apple:, About This Mac, More Info, then find your hd on the device list and locate it's model #. Then just google the model #.
 
I just replaced the (broken) 5400 Maxtor 60GB drive in my G4 iMac with a shiny new 7200 Hitachi 80GB - I'd say the new drive is quieter.

HB
 
Mine 7200 hitachi was bit noisy, I think might be mine hard drive problem so i upgraded to 320 GB western Digital 5400 rpm hard drive and i hardly notice any difference.

Capacity: 298.09 GB
Model: WDC WD3200BEVT-00ZCT0
Revision: 11.01A11
Serial Number: WD-XXXXXXXXXXX
Native Command Queuing: Yes
Queue Depth: 32
Removable Media: No
Detachable Drive: No
BSD Name: disk0
Mac OS 9 Drivers: No
Partition Map Type: GPT (GUID Partition Table)
S.M.A.R.T. status: Verified
Volumes:
Brain:
Capacity: 277.88 GB
Available: 206.76 GB
Writable: Yes
File System: Journaled HFS+
BSD Name: disk0s2
Mount Point: /
MICROSOFT:
Capacity: 19.9 GB
Available: 12.03 GB
Writable: Yes
File System: MS-DOS FAT32
BSD Name: disk0s3
Mount Point: /Volumes/MICROSOFT
 
What about the battery life, how long do you get using a 7200rpm drive compared to a 5400rpm drive?
 
Is Apple using a brand of 7200 RPM HDD other than Hitachi? I would really like to know.
 
DUH...............j/k, but what do you expect when you use one large drive instead of 1 or 2 externals? that's why those new drives are going to be a little smaller in gb size but have two thicker discs inside instead of three thinner ones making is a lot less noisy. i think i was reading about a hitachi drive when i found this out.

so if you want a quieter drive, sell me yours, i'm in the market for a 7200rpm 200gb+ drive. pm me.
 
Mine is very nice and quiet. The rest of my family uses dell laptops with the 5400rpm hard drive, and mine is much quieter.
 
MBP 2.16 15"

Put a Seagate 200gb 7200 in it about 4 months ago and do not hear at all.

Battery life appears unchanged.

As quiet at the old 5400 drive it replaced.
 
I'm running a Hitachi 200GB 7200RPM HD in my 17" MBP and mine is definitely super quiet. In fact, I'm sitting on my couch in the living room at 12:30AM and I can hear the fan running on my HD-DVD player 6 feet away louder than the HD in my laptop. If someone would really think this is loud, I would ask them to have their head checked to put it nicely.
 
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