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Samsung 850 Pro 512GB SSD Review

By: Chris Ramseyer | SSDs in Storage | Posted: Sep 1, 2014 9:10 pm
TweakTown Rating: 94%Manufacturer: Samsung

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. Here we see the three states of performance for the select SSDs, light use, consumer steady state and worst case.

 

samsung_850_pro_512gb_ssd_review_64

 

We were surprised the 850 Pro 512GB didn't put on a better show in our PCM8 Consistency Test. With RAPID Mode, the 850 Pro does a little better, but with the drive on its own, the results are not as high as we expected. That doesn't mean the 850 Pro 512GB didn't do well, the drive turned in a solid performance result, but it doesn't do as well as the Extreme PRO in a heavy use situation.

 

Storage Bandwidth All Tests

 

samsung_850_pro_512gb_ssd_review_65

 

Here we see all of the tests from the workload. The 850 Pro 512GB shows more performance drop off after extremely heavy use than we expected.

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