Replacing 320hd 7200rpm with 1tb 5900rpm, will I notice a differnece in speed?

ixi

macrumors newbie
Original poster
Jun 7, 2008
28
0
Like the title says, I have a 2.4ghz 20" iMac and just bought a 1tb seagate hd rated at 5900 rpms. My hd right now is a 320gb at 7200 rpms. Will I see a big difference in speed? Should I just put the new 1tb in a case and use it as an external drive? Thanks for any info.
 

Sun Baked

macrumors G5
May 19, 2002
14,874
57
Stick the bigger drive inside...

The 1-10 sec you might save in a day loading a file with a lot of random access fragments, might not outweigh all the time you spend moving files back and forth in order to manage the cramped internal drive.
 

J&JPolangin

macrumors 68030
Jul 5, 2008
2,564
5
Thule GL @ the TOW
I'd partition the 1 TB drive and use it for your main iTunes access and a TM back up for the other partition... that way you don't have to worry about taking your iMac apart and dust under the screen...
 

Warbitrary

macrumors regular
Nov 24, 2009
212
0
Montréal, Canada
Like the title says, I have a 2.4ghz 20" iMac and just bought a 1tb seagate hd rated at 5900 rpms. My hd right now is a 320gb at 7200 rpms. Will I see a big difference in speed? Should I just put the new 1tb in a case and use it as an external drive? Thanks for any info.
It might run at the same speed or faster, if you don't fill it up too much. Detailed info:
http://macperformanceguide.com/Storage-WhyYouNeedMoreThanYouNeed.html

I'd partition the 1 TB drive and use it for your main iTunes access and a TM back up for the other partition... that way you don't have to worry about taking your iMac apart and dust under the screen...
Putting a Time Machine backup on the same drive defeats the very purpose of a backup. If the drive fails, you've lost all your data.
 

jonwd7

macrumors member
Nov 19, 2009
58
0
It should still run much faster.

RPMs: 5900/7200 = 81.9% the RPMs

Platter density: Now, if you got the 7200.12 1TB model, it fits 1TB onto only TWO platters, for 500GB/platter. I can only speculate about the # of platters in your old hard drive (depending on the age), so I'll give a few cases...

500/320 (1-platter 320GB drive): 156.25% the density
500/160 (2-platter 320GB drive): 312.50% the density
…and so on…

So at best it may still be nearly 30% faster over sustained speeds. Randoms will of course rely on access times and what not and may not be that much better.
 

justaregularjoe

macrumors 6502
Nov 28, 2008
344
0
I don't get it. Why can you not just pick up a 7.2k 1TB?
They definately aren't rare, nor expensive for that matter. WD makes a 2TB Caviar Black.

:confused:
 

Mars478

macrumors 6502a
Mar 6, 2008
595
0
NYC, NY
No 5400RPM.
I upgraded from a 5400RPM 160GB in my MSI Wind running 10.6.2 to a 7200RPM 320GB and the difference was amazing. It's so much faster.
But it was 10$ more than a 500GB 5400RPM Drive. IT's a choice, speed or space.
 

ftaok

macrumors 603
Jan 23, 2002
6,182
1,192
East Coast
FYI, there is no such thing as a 5900rpm drive, its 5700.
No 5400RPM.
I upgraded from a 5400RPM 160GB in my MSI Wind running 10.6.2 to a 7200RPM 320GB and the difference was amazing. It's so much faster.
But it was 10$ more than a 500GB 5400RPM Drive. IT's a choice, speed or space.

I thought the same thing too when I saw this drive at Newegg last week. I thought it was a typo.

Apparently, Seagate has a whole bunch of 5900 RPM drives. Here's the LINK - Barracuda LP.
 
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