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SanDisk Ultra II vs SanDisk Ultra 3D

SanDisk has two similar SATA solid state drives with the Ultra II and Ultra 3D. You can check out this comparison guide to see what the main differences are between these two internal SSDs.

Quick Summary

When it comes to sequential reading, the 500 GB and 1 TB Ultra 3D SATA SSDs are faster than the e 480 GB and 960 GB Ultra II SATA SSDs. The 240 GB Ultra II SATA and 250 GB Ultra 3D SATA have the same maximum sequential read speed.

For sequential writing, the Ultra 3D model is all around faster than the Ultra II.

When it comes to random reading, the 250 GB Ultra 3D SATA is faster than the 240 GB Ultra II SATA. The 480 GB Ultra II SATA and 960 GB Ultra II SATA drives are faster than the 500 GB Ultra 3D SATA and 1 TB Ultra 3D SATA drives, however.

For random writing, the 240 GB Ultra II SATA and 960 GB Ultra II SATA are faster than the 250 GB Ultra 3D SATA and 1 TB Ultra 3D SATA. On the other hand, the 500 GB Ultra 3D SATA is faster than the 480 GB Ultra II SATA.

For capacity options, the Sandisk Ultra 3D does offer bigger capacities. The Ultra 3D model should also have better endurance and reliability than the Ultra II model.

You can purchase either of the aforementioned SSDs, if you are interested, on Amazon with the following links:

SanDisk Ultra II vs SanDisk Ultra 3D Comparison Chart

You can take a look at Seeking Tech’s comparison chart between the Ultra II and Ultra 3D below.

 SanDisk Ultra II SATA Internal Solid State DriveSanDisk Ultra 3D SATA Internal Solid State Drive
Capacity Options120 GB

240 GB

480 GB

960 GB
250 GB

500 GB

1 TB

2 TB

4 TB
Model Numbers120 GB Ultra II SATA: SDSSDHII-120G-G25

240 GB Ultra II SATA: SDSSDHII-240G-G25

480 GB Ultra II SATA: SDSSDHII-480G-G25

960 GB Ultra II SATA: SDSSDHII-960G-G25
250 GB Ultra 3D SATA: SDSSDH3-250G-G25

500 GB Ultra 3D SATA: SDSSDH3-500G-G25

1 TB Ultra 3D SATA: SDSSDH3-1T00-G25

2 TB Ultra 3D SATA: SDSSDH3-2T00-G25

4 TB Ultra 3D SATA: SDSSDH3-4T00-G25
Dimensions2.75 in. x 3.96 in. x 0.28 in. (or 69.95 mm x 100.50 mm x 7.00 mm)2.75 in. x 3.96 in. x 0.28 in. (or 69.95 mm x 100.50 mm x 7.00 mm)
InterfaceSATA Revision 3.0 (6 Gbit/s)SATA Revision 3.0 (6 Gbit/s)
Maximum Sequential Read Speed120 GB Ultra II SATA: Up to 550 MB per second

240 GB Ultra II SATA: Up to 550 MB per second

480 GB Ultra II SATA: Up to 550 MB per second

960 GB Ultra II SATA: Up to 550 MB per second
250 GB Ultra 3D SATA: Up to 550 MB per second

500 GB Ultra 3D SATA: Up to 560 MB per second

1 TB Ultra 3D SATA: Up to 560 MB per second

2 TB Ultra 3D SATA: Up to 560 MB per second

4 TB Ultra 3D SATA: Up to 560 MB per second
Maximum Sequential Write Speed120 GB Ultra II SATA: Up to 500 MB per second

240 GB Ultra II SATA: Up to 500 MB per second

480 GB Ultra II SATA: Up to 500 MB per second

960 GB Ultra II SATA: Up to 500 MB per second
250 GB Ultra 3D SATA: Up to 525 MB per second

500 GB Ultra 3D SATA: Up to 530 MB per second

1 TB Ultra 3D SATA: Up to 530 MB per second

2 TB Ultra 3D SATA: Up to 530 MB per second

4 TB Ultra 3D SATA: Up to 530 MB per second
Maximum Random Read Speed120 GB Ultra II SATA: Up to 81K IOPS

240 GB Ultra II SATA: Up to 91K IOPS

480 GB Ultra II SATA: Up to 98K IOPS

960 GB Ultra II SATA: Up to 99K IOPS
250 GB Ultra 3D SATA: Up to 95K IOPS

500 GB Ultra 3D SATA: Up to 95K IOPS

1 TB Ultra 3D SATA: Up to 95K IOPS

2 TB Ultra 3D SATA: Up to 95K IOPS

4 TB Ultra 3D SATA: Up to 95K IOPS
Maximum Random Write Speed120 GB Ultra II SATA: Up to 80K IOPS

240 GB Ultra II SATA: Up to 83K IOPS

480 GB Ultra II SATA: Up to 83K IOPS

960 GB Ultra II SATA: Up to 90K IOPS
250 GB Ultra 3D SATA: Up to 81K IOPS

500 GB Ultra 3D SATA: Up to 84K IOPS

1 TB Ultra 3D SATA: Up to 84K IOPS

2 TB Ultra 3D SATA: Up to 84K IOPS

4 TB Ultra 3D SATA: Up to 84K IOPS
Operating Temperature Range0°C to 70°C0°C to 70°C
Shock Resistance1,500 G at 0.5m/sec1,500 G at 0.5m/sec
Operating Vibration Resistance5 gRMS, 10 Hz to 2000 Hz5 gRMS, 10 Hz to 2000 Hz
Non-Operating Vibration Resistance4.9 gRMS, 7 Hz to 800 Hz4.9 gRMS, 7 Hz to 800 Hz
Warranty3-year limited warranty5-year limited warranty
PricingCheck price on Amazon.Check price on Amazon.

Capacity Options

When it comes to capacities, the Ultra 3D SATA offers bigger capacity options (1 TB, 2 TB and 4 TB) when compared to the Ultra II SATA.

You can find a breakdown of the available capacities for both products below.

SanDisk Ultra II SATA:

  • 120 GB
  • 240 GB
  • 480 GB
  • 960 GB

SanDisk Ultra 3D SATA:

  • 250 GB
  • 500 GB
  • 1 TB
  • 2 TB
  • 4 TB

Model Numbers

You can check out the model number associated with each capacity of the Ultra II and Ultra 3D solid state drives below:

  • 120 GB Ultra II SATA: SDSSDHII-120G-G25
  • 240 GB Ultra II SATA: SDSSDHII-240G-G25
  • 480 GB Ultra II SATA: SDSSDHII-480G-G25
  • 960 GB Ultra II SATA: SDSSDHII-960G-G25
  • 250 GB Ultra 3D SATA: SDSSDH3-250G-G25
  • 500 GB Ultra 3D SATA: SDSSDH3-500G-G25
  • 1 TB Ultra 3D SATA: SDSSDH3-1T00-G25
  • 2 TB Ultra 3D SATA: SDSSDH3-2T00-G25
  • 4 TB Ultra 3D SATA: SDSSDH3-4T00-G25

Dimensions

The two SanDisk internal solid SSDs are identical when it comes to physical size.

You can check out the measurements below:

  • 2.75 in. x 3.96 in. x 0.28 in. (or 69.95 mm x 100.50 mm x 7.00 mm)

Interface

When it comes to the interface, the Ultra II and Ultra 3D utilize SATA Revision 3.0 (6 Gbit/s).

Maximum Sequential Read Speed

When you compare similar capacities, the 240 GB Ultra II SATA and 250 GB Ultra 3D SATA have the same maximum sequential reading speed.

The 500 GB and 1 TB versions of the Ultra 3D SATA are 10 MB per second, or 1.82% faster, than the 480 GB and 960 GB versions of the Ultra II SATA.

You can check out the maximum sequential read speeds below:

  • 120 GB Ultra II SATA: Up to 550 MB per second
  • 240 GB Ultra II SATA: Up to 550 MB per second
  • 480 GB Ultra II SATA: Up to 550 MB per second
  • 960 GB Ultra II SATA: Up to 550 MB per second
  • 250 GB Ultra 3D SATA: Up to 550 MB per second
  • 500 GB Ultra 3D SATA: Up to 560 MB per second
  • 1 TB Ultra 3D SATA: Up to 560 MB per second
  • 2 TB Ultra 3D SATA: Up to 560 MB per second
  • 4 TB Ultra 3D SATA: Up to 560 MB per second

Maximum Sequential Write Speed

When it comes to maximum sequential writing, the 250 GB Ultra 3D SATA is 25 MB per second faster, or 5% faster, than the 240 GB Ultra II SATA.

The 500 GB and 1 TB Ultra 3D SATA SSDs are 30 MB per second faster, or 6% faster, than the 480 GB and 960 GB Ultra II SATA SSDs.

You can check out the maximum sequential write speeds below:

  • 120 GB Ultra II SATA: Up to 500 MB per second
  • 240 GB Ultra II SATA: Up to 500 MB per second
  • 480 GB Ultra II SATA: Up to 500 MB per second
  • 960 GB Ultra II SATA: Up to 500 MB per second
  • 250 GB Ultra 3D SATA: Up to 525 MB per second
  • 500 GB Ultra 3D SATA: Up to 530 MB per second
  • 1 TB Ultra 3D SATA: Up to 530 MB per second
  • 2 TB Ultra 3D SATA: Up to 530 MB per second
  • 4 TB Ultra 3D SATA: Up to 530 MB per second

Maximum Random Read Speed

As for maximum random reading, the 250 GB Ultra 3D SATA is 4K IOPS faster, or 4.4% faster, than the 240 GB Ultra II SATA.

On the other hand, the 480 GB Ultra II SATA is 3K IOPS faster, or 3.16% faster, than the 500 GB Ultra 3D SATA.

The 960 GB Ultra II SATA is also 4K IOPS faster, or 4.21% faster, than the 1 TB Ultra 3D SATA.

You can find the maximum random read speeds below:

  • 120 GB Ultra II SATA: Up to 81K IOPS
  • 240 GB Ultra II SATA: Up to 91K IOPS
  • 480 GB Ultra II SATA: Up to 98K IOPS
  • 960 GB Ultra II SATA: Up to 99K IOPS
  • 250 GB Ultra 3D SATA: Up to 95K IOPS
  • 500 GB Ultra 3D SATA: Up to 95K IOPS
  • 1 TB Ultra 3D SATA: Up to 95K IOPS
  • 2 TB Ultra 3D SATA: Up to 95K IOPS
  • 4 TB Ultra 3D SATA: Up to 95K IOPS

Maximum Random Write Speed

When it comes to maximum random writing, the 240 GB Ultra II SATA is 2K IOPS faster, or 2.47% faster, than the 250 GB Ultra 3D SATA.

The 500 GB Ultra 3D SATA is 1K IOPS faster, or 1.2% faster, than the 480 GB Ultra II SATA.

The 960 GB Ultra II SATA is 6K IOPS faster, or 7.14% faster, than the 1 TB Ultra 3D SATA.

You can find the random write speeds below:

  • 120 GB Ultra II SATA: Up to 80K IOPS
  • 240 GB Ultra II SATA: Up to 83K IOPS
  • 480 GB Ultra II SATA: Up to 83K IOPS
  • 960 GB Ultra II SATA: Up to 90K IOPS
  • 250 GB Ultra 3D SATA: Up to 81K IOPS
  • 500 GB Ultra 3D SATA: Up to 84K IOPS
  • 1 TB Ultra 3D SATA: Up to 84K IOPS
  • 2 TB Ultra 3D SATA: Up to 84K IOPS
  • 4 TB Ultra 3D SATA: Up to 84K IOPS

Operating Temperature Range

The two SATA solid state drives in this comparison guide have the same operating temperature range of 0°C to 70°C.

Shock Resistance

The shock resistance is also the same as both are protected for up to 1,500 G at 0.5m/sec.

Operating Vibration Resistance

The vibration resistances during operation are identical at 5 gRMS, 10 Hz to 2000 Hz.

Non-Operating Vibration Resistance

For non-operation, the vibration resistance is 4.9 gRMS, 7 Hz to 800 Hz for Ultra II and Ultra 3D.

Warranty

The SanDisk Ultra II SATA Internal Solid State Drive comes with a 3-year limited warranty while the SanDisk Ultra 3D SATA Internal Solid State Drive includes a longer 5-year limited warranty.

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