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hukuma

macrumors newbie
Original poster
Jul 15, 2007
29
0
San Diego, CA
Does anyone know if there's a difference between the drive speed of the 320GB and the 1TB drives in the iMac? I'm leaning towards the larger on-board drive...given that I have several TB of lossless music, video, etc. Obviously, I'll still need to run from some external drives, but I'd like to keep as much music as possible on-board.
 
Probably won't matter since the iMac still has a lame-@$$ 1.5 gbps SATA controller.

- All ALU iMacs have 3 Gbit/sec internal SATA interfaces.

- Even the 1.5 Gbit/sec SATA in older iMacs is faster than the
fastest/most modern high-capacity drives (i.e., 500 GB and up),
and much faster than any USB or firewire external drive.

To the OP: internal drive speed is a crap-shoot. There's no telling
which make/model you'll get with a new iMac. It's a safe bet that
it'll be something reasonably fast (in the 80 MByte/sec ballpark),
but probably not the latest super-fast (> 100 Mbyte/sec) models.

Also be aware that a modern drive's "maximum R/W transfer rate"
applies only to the outer tracks. The speed drops by about 50% for
the inner tracks -- so, any given drive is about twice as fast when
nearly empty as when nearly full.

LK
 
Probably won't matter since the iMac still has a lame-@$$ 1.5 gbps SATA controller.

Where did you get that information? According to System Profiler, my 24" iMac has the following in it
Vendor: Intel
Product: ICH8-M AHCI
Speed: 3.0 Gigabit
Description: AHCI Version 1.10 Supported


To answer the OP's question, I have the 1TB drive in and it seems plenty fast - it's a Hitachi HDS721010KLA330, which is a 7,200RPM drive with 32MB cache, 8.5ms seek time and has a 300MB/S (3.0 Gigabit) interface
 
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