Mixed Random Read/Write Performance

Most real-world use consists of a mix of reads and writes, and interleaving the two often poses a particular challenge to drive controllers. This mixed random access test is conducted across a 16GB span of the drive, with a queue depth of 3.

Iometer - Mixed 4KB Random Read/Write

The BX200's reasonable read speeds are apparently able to compensate for the write performance enough to keep at least the 960GB BX200 out of last place for the mixed random test, but the 480GB only manages to surpass a 120GB drive.

Iometer - Mixed 4KB Random Read/Write (Power)

The power draw is even more mainstream than the performance, because despite being inefficient the BX200 isn't unreasonably power hungry in an absolute sense.

Crucial BX200 480GB

Slow and steady doesn't win the race here. Most drives gain speed near the end of the test for the write-heavy portions, but the BX200 gains no performance as the power consumption climbs. It doesn't have the slight bathtub curve shape in the middle the way the Trion 100 does, which is how it keeps pace even without the boost at the end.

Mixed Sequential Read/Write Performance

At either end of this test, when the workload is heavily skewed toward either reads or writes, most drives perform well. In between, performance typically suffers greatly, and that's where the winners and losers of this test are usually determined. Anything that's duplicating or transforming a large amount of data on the drive will produce I/O patterns similar to this test. Creating a System Restore snapshot, backing up files to a different location on the same drive, and file compression can all produce interleaved reads and writes of large blocks of data, though not necessarily fast enough to be limited by the drive's performance. Heavy multitasking can add up to a mixed workload.

Iometer - Mixed 128KB Sequential Read/Write

With average read speeds and poor write speeds, the BX200 is in last place for the overall average, since the competition didn't have any acute weaknesses.

Iometer - Mixed 128KB Sequential Read/Write (Power)

Average power consumption is once again high, and the 960GB is a particular outlier.

Crucial BX200 480GB

The graph of performance as more writes come into the mix shows just how quickly things get bad. There's a big jump in power consumption once writes are more common than reads, and the drive is almost as overwhelmed at 40/60 as it is for the pure writes.

Sequential Performance ATTO & AS-SSD


View All Comments

  • Shadow7037932 - Tuesday, November 03, 2015 - link

    That's kind of disappointing, esp. the 250GB version as it's only a little cheaper than the 850 EVO. However, the 960GB assuming sales/deals, go down to $230-250 in the coming months, I can see people buying it to replace HDDs for say storing games. Reply
  • eek2121 - Tuesday, November 03, 2015 - link

    That's MSRP for the BX200. The street prices will probably be much cheaper. Reply
  • Samus - Tuesday, November 03, 2015 - link

    For the price your still better off with the OCZ ARC100 with toshiba MLC and. Barefoot3 controller. Reply
  • LB-ID - Tuesday, November 03, 2015 - link

    Toshiba's still selling things under the OCZ name? It long since needed to die and go away. Reply
  • Lazlo Panaflex - Friday, November 06, 2015 - link

    +1 to that. Lots of people got burned by bad OCZ drives. Pretty dumb of Toshiba to keep calling them that. Reply
  • tamalero - Thursday, November 12, 2015 - link

    Reminds me of Hitachi when they bough the IBM dextar drives.
    anyone remembers the horrible failures of the 10k and 15k rpm drives under IBM?
    even their consumer disks were dying like mad.
    They sold their business to Hitachi who fixed the mess.
    did this happen to Toshiba and the OCZ drives?
  • leexgx - Tuesday, November 03, 2015 - link

    the poor power use on that drive is very bad (why i got the BX100 as it has overall best lowest power usage under almost all loads) BX100 is not the fastest SSD drive around but BX200 for £10 more is not good, same with the MX200 as well Reply
  • coconutboy - Tuesday, November 03, 2015 - link

    For several months now, on a near-weekly basis, Samsung Evo drives are hitting sale prices of ~$150 for 500GB and $75 for 250GB. Except for customers not paying attention, Crucial is gonna have a tough time moving these bx200 when there's unproven reliability, almost no price advantage, and a huge performance deficit.

    Crucial needs to drop their msrp or cut retailers a deal to lower street prices.
  • eek2121 - Tuesday, November 03, 2015 - link

    You are comparing MSRP to street prices. Most of the SSDs in that list are running at least $20 (and sometimes much more) below MSRP. I'm betting $0.25-$0.27 per gig once these things see widespread availability. Don't be surprised if this drive causes price brackets to move again. 480/512 where the 256 was, 960/1tb where the 512 was, etc. Reply
  • The_Assimilator - Tuesday, November 03, 2015 - link

    It bloody well *better* move price brackets, since it's apparently not good for much else. Reply

Log in

Don't have an account? Sign up now