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Seagate Momentus Gforce 7200.4 500GB 2.5in SATA 7200RPM 16MB Notebook Hard Drive OEM

Seagate Momentus Gforce 7200.4 500GB 2.5in SATA 7200RPM 16MB Notebook Hard Drive OEM - 1
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Seagate Momentus Gforce 7200.4 500GB 2.5in SATA 7200RPM 16MB Notebook Hard Drive OEM - 35411_l.jpg Customer Photos (0)
Reg. Price: $99.98  CAD
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   Shipping Weight:   0.2 lbs
   Part #: ST9500420ASG
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Features    [ Edit | History ]

The Seagate Momentus 7200.4 drive delivers the highest capacity on a laptop hard drive while satisfying today's need for performance. System builders can count on extending the life of their 7200-RPM laptops by eliminating the need to replace or upgrade due to performance issues. All this without sacrificing battery life, because this new 7200-RPM drive draws only slightly more power than a 5400-RPM laptop drive.

Quick Specs:
Buffer 16 MB
Storage Capacity 500 GB
Hot Swappable Yes
Rotational Speed 7200 rpm
Limited Warranty 1 Year
Weight (Approximate) 3.88 oz
Form Factor Plug-in Module
Height 0.4"
Width 2.8"
Depth 4"
Green Compliant Yes
Green Compliance Certificate/Authority RoHS
Drive Interface SATA
Drive Width 2.5"
Drive Interface Standard SATA/300

Specifications    [ Edit | History ]
Drive Performance  
     Buffer: 16 MB
     Maximum External Data Transfer Rate: 300 MBps (2.3 Gbps)
     Rotational Speed: 7200 rpm
General Information  
     Brand Name: Seagate
     Manufacturer: Seagate Technology
     Manufacturer Part Number: ST9500420ASG
     Manufacturer Website Address:
     Product Line: Momentus
     Product Model: ST9500420ASG
     Product Name: Momentus 7200.4 ST9500420ASG Hard Drive
     Product Series: 7200.4
     Product Type: Hard Drive
     Drive Interface: SATA
     Drive Interface Standard: SATA/300
     SATA Pin: 7-pin
     Green Compliance Certificate/Authority: RoHS
     Green Compliant: Yes
Physical Characteristics  
     Depth: 4" (100.4 mm)
     Drive Width: 2.5"
     Form Factor: Plug-in Module
     Height: 0.4" (9.5 mm)
     Hot Swappable: Yes
     Weight (Approximate): 110 g
     Width: 2.8" (69.9 mm)
Technical Information  
     Storage Capacity: 500 GB
     Limited Warranty: 1 Year

Seagate ST9500420ASG Customer Reviews

Product reviews on are screened for relevance and inappropriate content. Reviews may contain inaccurate information about the product. If there is a discrepancy, please use the Flag this Review link located beside each review. Reviews are not an endorsement expressed by, but opinions from customers based on their own experience with a product. We do not recommend you make purchasing decisions based on facts or opinions expressed regarding Seagate ST9500420ASG reviews.
Experience: 1 Months
good speed
didn't work properly
i bought the hard drive and when i got it it caused my laptop to bsod of death. so a told ncix and they promptly guive me rma # than replaced the hard drive. so i would like to thank them for good service and the new hard drive is working great

Experience: 5 Months
Bought it for PS3 upgrade and worked right out of the box with no problems. Transferred my backup to it and been running fine for 5 months.
Nothing wrong with it.
Like i said, i bought it for my ps3 and worked fine for 5 months now. Didn't see any change in behavior at all, no lag, no jitter during video playback or playing games.

Go for it!

Experience: 5 Days
 Verified Owner
PRICE! with the lowest $/gb, industry standard warranty, low power consumption, and steady performances
none so far
lovin it! and so will you. low price, lowest $/gb, industry standard warranty, low power consumption, and steady performances

Experience: 1 Weeks
 Verified Owner
Good price, good drive
Slight vibration
I purchased this drive as a replacement drive for my Macbook. The drive works great, but has a slight vibration so my Macbook hums when its set on a table while the drive is still spinning. It also runs hotter than the 5400's so the fan comes on much more frequently. This combined with the extra power required for the drive means the battery gets chewed up significantly faster. The drive is a bit quicker though so it is a tradeoff. I was hoping for near equivalent power consumption and noise, with increased speed.

I would recommend for laptops and netbooks to use 5400's as replacement drives if that is what the original specification was. Again, nothing wrong with the drive, its working just fine.

Experience: 1 Days
Good price
Only 2.5 inches
Bought one at ncix weekly special for about $50 dollars
Very nice drive , lots of space
500Gb always not too bad for pictures , movie or data storage!
also 7200rpm and 16mb cache memory make it working much
faster !

Very happy about Seagate always!
Highly recommended!

Experience: 2 Months
 Verified Owner
Quiet, lots of space.
Slower than expected
This is a nice quiet drive. I installed it in my wife's HP tablet to replace the 160GB drive it came with. More space was the order of the day. It is faster than the old drive but I expected more. Oh, wait, this is a 5400 RPM drive. Of course.
It is much quieter than the 7200.4 Gforce 320GB which I put in my Aspire One a couple years ago.
Given the space requirements in a laptop, where you can usually have only one hard drive you may as well spend a few dollars more and get a big one!

Experience: 5 Days
 Verified Owner
Warranty, price, silent, speed.
Great quiet drive, very fast and backed by a solid warranty. The gforce proctection gives you an extra piece of mind. Overall very impressed A+

Experience: 9 Months
 Verified Owner
-Makes alotta noise
-Only few seconds faster than 5400rpm
I've used this in my toshiba satellite A300 for over 8 months now. Its fast, Reliable, and 500GB. it makes alot more noise than i'd expect (humming and vibrations) which is why I took a star off. At the time I bought it was relative cheap and good. Now though, 500gb 2.5" harddrives are abundant so you have a lot of options. Not sure exactly what the difference between Gforce and regular Momentus is...

Would buy again if it was cheaper :P

Experience: 8 Days
 Verified Owner
price, gforce
cant think of any
Excellent price for an excellent drive, definitely worth it to get more space than the drive that came with my laptop. Might even get another one to do backup images on in case of catastrophic failure backup, which is what happened with my old one. I would recommend this to anyone in the market.

Experience: 60 Days
 Verified Owner
This is a great budget hard drive to place in a laptop. It's just as quiet as most 5400 RPM drives, and a nice boost in boot up times. I wouldn't upgrade from a 500GB 5400 RPM Hard Drive to this for the performance boost because it may not be worth it, but if you have a smaller drive and require more space then this is a good choice.

 NCIX Forum Messages

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Messages about Seagate Momentus Gforce 7200.4 500GB 2.5in SATA 7200RPM 16MB Notebook Hard Drive OEM

Will thi swork in a PS3 (Bill_R- Jan 14, 12, 3 Replies) Read this message
warranty (Keith_R- Aug 28, 11, 1 Replies) Read this message
raid mirror (Uncle- Nov 11, 10, 5 Replies) Read this message
Firmware? Reliable HDD? (cmen- Sep 17, 10, 3 Replies) Read this message
For Toshiba Satellite A210-MS6 ? (kentb- Oct 29, 09, 1 Replies) Read this message
Aspire 5100 work with this drive?? (dave_b- Aug 17, 09, 1 Replies) Read this message
Discontinued? (Todor_Z- Apr 16, 09, 3 Replies) Read this message
Product availability (Robert_F- Feb 01, 09, 6 Replies) Read this message
works with ps3?? (#Ccc Jet- Jan 19, 09, 2 Replies) Read this message

Post a New Message  |    All Messages       Browse NCIX Forums

Forum messages are not reviewed and may not contain accurate information about a product. Message contents are opinions from customers based on their own experience with a product. We do not recommend you make puchasing decisions based on Forum messages.
Reviews from the Web

Below are reviews found on other web sites for this product submitted by customers.

Comment: HardwareLogic - Seagate Momentus 7200.4 500GB ST9500420AS Review
Posted by: LMB @08/02/10
Comment: - Seagate Momentus 7200.4 500GB 2.5 inch SATA Notebook Hard Drive Review
Posted by: LMB @08/02/10
Comment: Legit Storage Reviews - Seagate Momentus 7200.4 500GB Notebook Hard Drive
Posted by: LMB @08/02/10
Submit a review link   |   Latest 30 reviews
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First 30 days limited warranty through The remainder of the two year warranty is provided directly by the manufacturer.
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