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Plextor M6S 256GB SSD Review

By: Chris Ramseyer | SSDs in Storage | Posted: Apr 10, 2014 4:01 am
TweakTown Rating: 86%Manufacturer: Plextor

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 many data outputs that we use to judge a drive's performance.

 

plextor_m6s_256gb_ssd_review_60

 

We're starting with the throughput in worst case (blue) and recovery (orange) phases. The worst case performance shows the drives after being hammered with a heavy load, and the recovery phase shows typical performance when you are surfing the web, writing reviews and so on.

 

The drives are listed in alphabetical order, so you have to go down a few spaces to find the M6S 256GB. Here we see where the 4-channel design hurts the M6S: after a massive workload. Most regular users will never get the drive to this point. The TRIM bandwidth shows the performance in the same tests after periods of light workload and idle time. This represents the performance level most users will encounter.

 

Disk Busy Time

 

Disk Busy Time shows us how long the drive has to work to achieve the performance from the above. The best scenario is high throughput performance with low busy time. The less the drive works, the less power it consumes. For the most part, this is an efficiency test.

 

plextor_m6s_256gb_ssd_review_61

 

The M6S doesn't reserve space for overprovisioning, so it's not as efficient as some of the other drives on the market.

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