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Seagate Momentus 7200.3 ST9320421AS - Hard drive - 320 GB - internal - 2.5" - SATA-300 - 7200 rpm - buffer: 16 MB
 
 

Seagate Momentus 7200.3 ST9320421AS - Hard drive - 320 GB - internal - 2.5" - SATA-300 - 7200 rpm - buffer: 16 MB

Other products by Seagate
4.0 out of 5 stars See all reviews (13 customer reviews) More about this product

List Price: $189.99
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Frequently Bought Together

Customers buy this item with Macally PHRS-250CC FireWire 400/USB2.0 External Storage Enclosure for 2.5" SATA HDD

Seagate Momentus 7200.3 ST9320421AS - Hard drive - 320 GB - internal - 2.5" - SATA-300 - 7200 rpm - buffer: 16 MB + Macally PHRS-250CC FireWire 400/USB2.0 External Storage Enclosure for 2.5" SATA HDD
Price For Both: $118.52

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Technical Details

  • Hard Disk Size: 320 GB
  • The industry's highest-performing 7200-RPM laptop hard drive
  See more technical details

Product Details

  • Item Weight: 9.6 ounces
  • Shipping Weight: 1 pounds (View shipping rates and policies)
  • ASIN: B001NCTEC4
  • Item model number: ST9320421AS
  • Average Customer Review: 4.0 out of 5 stars See all reviews (13 customer reviews)
  • Amazon.com Sales Rank: #5,354 in Electronics (See Bestsellers in Electronics)

    Popular in this category: (What's this?)

    #31 in  Electronics > Computers & Accessories > Internal Desktop Components > Hard Drives
  • Date first available at Amazon.com: August 9, 2008

Product Description

Product Description
The Seagate Momentus 7200.3 drive - the industry's highest-performing 7200-RPM laptop hard drive - delivers performance, small size and mobility to all users. Available with G-Force Protection, this drive also offers added durability and robustness in the event of the accidental drops that can occur in strenuous mobile environments. The Seagate Momentus 7200.3 laptop hard drives are perfect for mainstream and performance laptops, workstations and small form factor PCs.

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Customer Reviews

13 Reviews
5 star:
 (9)
4 star:
 (1)
3 star:    (0)
2 star:    (0)
1 star:
 (3)
 
 
 
 
 
Average Customer Review
4.0 out of 5 stars (13 customer reviews)
 
 
 
 
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Most Helpful Customer Reviews

 
6 of 6 people found the following review helpful:
5.0 out of 5 stars Great Laptop Drive Upgrade, January 19, 2009
This is the ideal upgrade disk - 16MB buffers, 7,200 RPM, very good IO scores from the benchmarking community. In early 2009, this disk is right on the sweet spot of high performance and low cost.

I think the guy complaining about an "OEM Drive" meant to say that this disk is not an external Firewire or USB disk in a cabinet. It is an internal drive, using standard SATA laptop connectors.

I upgraded my Macbook Pro's 120 GB drive because it was more than 80% full and I wanted to add another 10GB VM and several thousand pictures. Although OSX allocates files smaller than 20 MB in contiguous chunks, making defrag unnecessary, as the disk fills up, contiguous allocation gets more difficult and writes get slower. Since most user apps do some writing (browsers write lots of temp files), the whole system feels slower.

The result of the upgrade was to reduce the bootup time by 15 seconds out of 2.5 minutes, and double the launch speed of Firefox and similar apps (20s -> 10s).

My upgrade procedure was to set up an empty 120GB partition on my USB external drive, turn off Time Machine, and use Carbon Copy Cloner to copy everything. I did not select CCC's block-copy cloning, because I wanted to defrag some very large files. Done this way, over USB, took 3 hrs to copy, then 40 minutes with a screwdriver (not rushing, as this was the first time I've opened a laptop), and a little over 1.5 hrs to copy back from the external drive to the new 320 GB disk.

Afterwards, I set TM to ignore the transfer partition, and it automatically re-built my entire backup. I don't know why, but it stayed busy for several hours.
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5 of 6 people found the following review helpful:
5.0 out of 5 stars Great replacement drive for your laptop, December 8, 2008
By L. Williams (Clearwater, FL, USA) - See all my reviews
(REAL NAME)      
I just purchased this drive as a replacement for the drive in my MacBook Pro. My laptop originally came with a 100GB drive 2 years ago, which I upgraded myself to a Seagate Momentus 200GB drive about 7 months ago. Now the 320GB drives are out and I upgraded again. The drive is quiet and has lots of room for whatever mobile computing you need to do. After the OS is installed there is about 267GB of free space--and that's plenty of capacity to fill up with work, music, videos, photos or whatever you need.

Seagate has managed to keep the drain on the battery with the 320GB identical to the 200GB drive, and while the drive got quite hot during the transfer of data over to the new drive (intensive disk activity), the normal operating temperature seems the same as the 200GB.

To get your data from your old drive to the new one, first download a free copy of Carbon Copy and install it on your old drive before you remove it. Buy a 2.5" enclosure with a Firewire 400 or 800 port and install your old drive in it. USB2 ported enclosures will work but they're much slower. Install the new drive in your laptop, plug the external drive in the FW800 port and boot up your computer from the external drive. Launch Carbon Copy and copy all your data over to the new drive. Reboot and you're all set.

You don't need to be a computer geek to install a new drive in your MacBook or MacBook Pro by yourself--although it will void your warranty unless you take it to an authorized Mac reseller/repair place. My MacBook Pro is out of warranty so it wasn't a factor for me. Google "installing a hard drive in a MacBook" and you'll find several sites that give either video or still picture instructions. I was able to swap out my drive and put my laptop back together in about 15 minutes. You'll need a tiny Phillips screwdriver and a Torx #6 screwdriver to undo all the screws, and a gentle touch so you don't strip the threads or the screwdriver sockets, but it's actually quite easy. Take care putting the screws back in and don't force them.

I have usually been buying all my bare drives through [...], but I've just discovered Amazon is quite a bit cheaper for exactly the same products--Amazon does it again! I'm learning over and over again to always compare prices to Amazon's, as Amazon always seems to be the better bargain. Add to that a terrific return policy and you have an unbeatable combination. Why shop anywhere else?
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2 of 2 people found the following review helpful:
5.0 out of 5 stars Perfect upgrade for my macbook, April 4, 2009
By Dish Soap (Mountain View, CA United States) - See all my reviews
Pros: High capacity for form factor, fast, near-silent, runs cool.

Cons: None so far.

Bought it to replace the 160 gb 5400 RPM Fujitsu hard drive in my Macbook pro. I was afraid there would be a change in noise and heat, but so far noise is the same (virtually none) and it actually runs cooler. I didn't run any benchmarks but the system seems speedier. I don't know if battery life is affected.
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Most Recent Customer Reviews

1.0 out of 5 stars Crap
Had it for 4 weeks and it died. Thankfully I had my old drive to boot from and an external that I had saved my data to.
Published 13 days ago by Biggles

5.0 out of 5 stars faster
works great with no problems. It runs a little bit warmer but not hot and when there is no other sounds around I can hear a slight tick. Read more
Published 1 month ago by Jerry Chaves

5.0 out of 5 stars Seagate Momentus 7200.3 ST9320421AS - Hard drive - 320 GB - internal - 2.5" - SATA-300 - 7200 rpm - buffer: 16 MB
Seagate Momentus 7200.3 ST9320421AS - Hard drive - 320 GB - internal - 2.5" - SATA-300 - 7200 rpm - buffer: 16 MB

This is a fast hard drive. Read more
Published 1 month ago by B. Smith

5.0 out of 5 stars Thumbs up
I popped this into my Unibody. It was easy breezy. It's as quiet as the 5400 stock hdd so i'm happy. Happy SuperDuper'ing!
Published 1 month ago by J C

1.0 out of 5 stars Turns to a brick after 2 months.
Bought this drive and installed in in January. Turned to a brick yesterday. Complete drive failure suddenly and with out any warning or flakines leading up.
Published 4 months ago by Stan Rohrer

5.0 out of 5 stars A dependable drive
A very good value in a large 7200rpm drive. The delivery was timely and without any problems. I would recommend this drive and merchant to others.
Published 4 months ago by no5a1nt

5.0 out of 5 stars Great Hard Drive!
I recently purchased the Seagate Momentus 7200.3 320gb hard drive. So far it works great! It is nice to have all the extra space!
Published 5 months ago by J. Benedict

5.0 out of 5 stars Very Fast MacBook HD
I bought this to replace an 80G drive in a MacBook. I used an Apricorn kit to copy the old HD to the new HD. (I recommend the Apricorn kit highly. Read more
Published 6 months ago by Michael L. Sherrard

1.0 out of 5 stars Bummer ...
I would like to comment on this hard drive, but I can't. That is because it is an OEM drive and it is incompatible with non-OEM drives. Read more
Published 6 months ago by Lawrence

4.0 out of 5 stars Very good for Eee PC
I bought this drive to replace the built-in 160GB 5400.4 hard drive that ships with Eee 1000H. You get a decent performance increase loading programs, and transfering large files... Read more
Published 7 months ago by Janel Díaz

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