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The Maxtor DiamondMax 21 is a PC hard disk drive that comes in capacities of 80 to 500 Gb.

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Great build quality/craftsmanship - runs free of inoperative sectors for full drive access

2 agree

Installation is quick and easy - unit works right out of the box and integrates smoothly into most towered PC configurations

1 agrees

Suitable option or multitasking/primary HDD use - fast, efficient nature can store massive files while running modern PC video games

1 agrees

Excellent option for RAID configurations - provides consistently high operations speeds

1 agrees

5-year warranty is a huge bonus - drives are occasionally DOA, and are naturally prone to malfunction after several years of regular usage

1 agrees

Reasonable price point for the feature set - 320GB storage and Firewire connectivity are major selling points

1 agrees
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Lacks several mandatory components - users must separately purchase SATA cable and attachment screws

2 agree

Prone to heavy vibration, especially on boot-up - may cause damage/large amount of noise depending on enclosure type

1 agrees
  • Only 3 words are allowed.


The Maxtor DiamondMax 21 is a PC hard disk drive that comes in capacities of 80 to 500 Gb. It targets entry-level PCs, Non-traditional ATA storge applications, and external storage. It has a 7200 RPM speed, which is typical for PC hard drives. Its operating shock comes at 63g, and non operating shock is 350g. This is quite little compared to the Seagate Momentus hard disk drive portfolio, however is excpected as the Momentus is designed for laptops which are more prone for shock than a PC hard drive. Unfortunately, the official page of this product lists no information about the acoustics of this piece, but external review indicate that it is pretty quiet.  Critics also note that this piece can heat up a lot especially when a lot of data is transferred, and advised for proper ventilation and cooling for it. With the Serial ATA interface, this piece can transfer up to 3.0 Gb/s. 

  • Capacity (GB): 80, 160, 250, 320, 500
  • Interface: Ultra ATA or SATA 3Gb/s with NCQ
  • Cache (MB): 2, 8 or 16
  • Spindle Speed (RPM): 7200
  • Shock, Operating, 2 ms (Gs): 63
  • Shock, Nonoperating, 2 ms (Gs): 350
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