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advantage and disadvantage of dual hard drives for new lapto

by gklein / May 2, 2007 9:13 AM PDT

planning to purchase new laptop offering a choice of a dual hard drives - SATA (120gb x 2) at 5400rpm or 7200rpm.

1. does dual HHD use more battery power ?
2. generate more heat ?
3. increase or decrease performance speed ?

I am not interested in RAID or the backup function ?
My storage needs are modest pictures and music.

Gene, Bradenton, FL

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yes, dual HDs use more power and more heat
by ramarc / May 2, 2007 9:49 AM PDT

i see dual HDs as a marketing ploy mostly. if you really need that much space (>120gb) then get a NAS or external USB drive.

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Don't bother

If you're not planning on using RAID and don't really need the storage, don't bother with the extra HDD. It will cause a bigger drain on the battery, and it will create more heat, though it won't affect performance at all. If it's a laptop model that can have an additional battery in the bay where the second HDD would go, THAT might be a worthwhile upgrade.

Also, keep in mind that while higher RPMs on drives does make for somewhat improved performance, it will also cause more heat dissipation and a bigger battery drain to keep the drive spun up that fast. I'd probably go with a 4200RPM HDD for a laptop if it's an option.

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