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SanDisk Extreme PRO 480GB SSD Review (Page 7)

By Chris Ramseyer from Jun 28, 2014 @ 0:25 CDT
TweakTown Rating: 96%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 10 minutes.

2. Run performance test (one pass only).

3. Repeat 1 and 2 for 8 times, and on each pass increase the duration of random writes by 5 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 1 and 2 for 5 times.

Recovery Phase:

1. Idle for 5 minutes.

2. Run performance test (one pass only).

3. Repeat 1 and 2 for 5 times.

Storage Bandwidth

PCMark 8's Consistency test provides a ton of data output that we use to judge a drive's performance.

sandisk_extreme_pro_480gb_ssd_review_60

The SanDisk Extreme II was the king of consistent performance, until the Extreme PRO arrived. The PRO model takes the same tight performance and pushes it out further. The steady state for the Extreme II measured in at 205 MB/s. The PRO increases the bandwidth to 232 MB/s. That doesn't sound like a large margin, but when you omit the Extreme II, the Extreme PRO delivers nearly 50 MB/s more bandwidth in steady state over its closest rival.

Storage Bandwidth - All Tests

sandisk_extreme_pro_480gb_ssd_review_61

The 50 MB/s number comes from the worst-case performance group, a place where many gamers find their SSDs after installing several games in succession.

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