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SanDisk Ultra II 480GB SSD Review

By: Chris Ramseyer | SSDs in Storage | Posted: Oct 30, 2014 1:37 pm
TweakTown Rating: 92%Manufacturer: SanDisk

Futuremark PCMark 8 Extended - Consistency Test

 

Version and / or Patch Used: 2.0.228

 

Heavy Usage Model:

 

Futuremark's PCMark 8 allows us to wear the test drive down to a reasonable consumer steady state and then watch the drive recover on its own through garbage collection. To do that, the drive gets pushed down to steady state with random writes and then idle time between a number of tests allows the drive to recover.

 

Precondition Phase:

1. Write to the drive sequentially through up to the reported capacity with random data.

2. Write the drive through a second time (to take care of overprovisioning).

 

Degradation Phase:

1. Run writes of random size between 8*512 and 2048*512 bytes on random offsets for ten minutes.

2. Run performance test (one pass only).

3. Repeat one and two, eight times, and on each pass, increase the duration of random writes by five minutes.

 

Steady state Phase:

1. Run writes of random size between 8*512 and 2048*512 bytes on random offsets for 50 minutes.

2. Run performance test (one pass only).

3. Repeat one and two, five times.

 

Recovery Phase:

1. Idle for five minutes.

2. Run performance test (one pass only).

3. Repeat one and two, five times.

 

Storage Bandwidth All Tests

 

PCMark 8's Consistency test provides a ton of data output that we use to judge a drive's performance. Here we see the three states of performance for the select SSDs, light use, consumer steady state and worst case.

 

sandisk_ultra_ii_480gb_ssd_review_64

 

We've changed this section up a bit from our previous review. Here we see the full test with the degrade sections first, then the steady state, and finally the recovery phases. Under heavy use, the Ultra II 480GB is the slowest drive on the chart, but a majority of our readers will never get a SSD into this condition.

 

Typical Consumer Workloads

 

sandisk_ultra_ii_480gb_ssd_review_65

 

This is the recovery section of the test, the area where most consumer workloads run, and the area we typically see consumer SSDs win. The Ultra II 480GB runs in the middle of the pack, and is faster than half of the drives on the chart.

 

Consumer Throughput Breakdown

 

sandisk_ultra_ii_480gb_ssd_review_66

 

Here we see the breakdown in a different format. Most of us should consider the orange and red bars as typical usage, and the blue bar as a heavy use scenario that we may get to just a few times in the SSDs lifespan.

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