OCZ ARC 100 (240GB) SSD Review
by Kristian Vättö on August 26, 2014 7:00 AM ESTRandom Read/Write Speed
The four corners of SSD performance are as follows: random read, random write, sequential read and sequential write speed. Random accesses are generally small in size, while sequential accesses tend to be larger and thus we have the four Iometer tests we use in all of our reviews.
Our first test writes 4KB in a completely random pattern over an 8GB space of the drive to simulate the sort of random access that you'd see on an OS drive (even this is more stressful than a normal desktop user would see). We perform three concurrent IOs and run the test for 3 minutes. The results reported are in average MB/s over the entire time.
Random speeds show a small decrease in performance over the other OCZ drives, which is due to the combination of the slower M10 controller and A19nm NAND.
Sequential Read/Write Speed
To measure sequential performance we run a 1 minute long 128KB sequential test over the entire span of the drive at a queue depth of 1. The results reported are in average MB/s over the entire test length.
In sequential performance the ARC 100 seems to be more optimized for read performance as that is up compared to the Vector 150 and Vertex 460, but in turn the write speed has decreased slightly.
AS-SSD Incompressible Sequential Read/Write Performance
The AS-SSD sequential benchmark uses incompressible data for all of its transfers. The result is a pretty big reduction in sequential write speed on SandForce based controllers, but most other controllers are unaffected.
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HisDivineOrder - Tuesday, August 26, 2014 - link
"The Barefoot 3 platform does provide excellent performance consistency and it has proven to be reliable over the last two years""The Barefoot 3 platform does provide excellent performance consistency...has proven to be reliable over the last two..."
"...excellent performance consistency...has proven to be reliable..."
"...consistency...reliable..."
Wut? You can't be serious. Go read the reviews by actual users. OCZ products have far higher one-star reviews and failures than any other serious equivalent. Or do you guys really think the rest of the world is wrong about their reliability and you're right? ;)
Kristian Vättö - Tuesday, August 26, 2014 - link
Here is some actual data from NewEgg and Amazon for you:OCZ Vector 150 & Vertex 460 combined: 89.2% are 5 or 4-star reviews - 7.8% 1-star
Crucial M500: 91.1% are 5 or 4-star - 4.6% 1-star
Samsung 840 EVO: 94.1% 5 or 4-star - 2.3% 1-star
OCZ's sample size was much smaller and there were only 13 one-star reviews in total, so the results are not really scientifically accurate. There were several one-star review due to the fact that OCZ denies warranty if bought from an uncertified reseller, so the number of failures is smaller in reality.
Either way, your claim that OCZ has "far higher one-star reviews" isn't true. It used to be true and I don't deny that, but the OCZ today is totally different company with new management and owner. Things are only going to get better with Toshiba helping OCZ with validation.
Per Hansson - Tuesday, August 26, 2014 - link
Yea, but OCZ still shows up in hardware.fr reliability survey as the black sheep.No matter how much they say they want to improve their reputation the numbers don't lie:
http://www.hardware.fr/articles/920-7/ssd.html
Sure it's better than the 50% RMA rates for the Petrol & Octane series, but then again those where never even recalled by OCZ so in my mind they can just go MIA!
http://www.hardware.fr/articles/893-7/ssd.html
mapesdhs - Wednesday, August 27, 2014 - link
Ah yes and no other manufacturer ever screwed things up?... In reality they've all
chucked out bad fw, but people forgave the likes of Intel and Samsung when they
did that. OCZ changed its policies, started producing excellent models, yet people
still post the same old guff about Octane/Petrol models.
Ian.
mapesdhs - Wednesday, August 27, 2014 - link
Nonsense. All that stuff was about much older models. The later OCZ SSDs are very good,everything from the Vertex4 onwards. Heck, with the early fw issues sorted out, the previous
models are fine too, I have loads of them.
Ian.
PS. Buyer feedback on a seller site suffers from enormous -ve bias. People who don't
have any issues almost never state the fact. Sats: garbage in = garbage out.
kaesden - Tuesday, August 26, 2014 - link
You couldn't pay me enough to ever trust another OCZ product. I dont care how well they perform, or how cheap they might be, they are the most unreliable memory products i've EVER used.hojnikb - Tuesday, August 26, 2014 - link
They were. Now that sandforce is gone and toshiba is owning them, this is a completly different OCZ as it was a few years ago.hosps - Tuesday, August 26, 2014 - link
Management is still the same and by the CEO's own admission, they have been left largely alone for day-to-day operations. This product is yet another horrible idea just like Octane, Petrol, and Agility. They are undercutting their own product lines with inferior products and dumbfounded why their higher end products don’t sell. They need to follow what Samsung has done and release two product lines and keep it straight. Higher number product numbers = higher expected performance. Stop mixing and matching product lines and tagging them with meaningless numbers that have no sense of order or scale. They keep repeating the same mistakes that led them to bankruptcy and it’s why they won’t survive as a company.hojnikb - Tuesday, August 26, 2014 - link
What toshiba needs to do is rebrand the whole thing; they could just continue using toshiba brandname as they did before ocz acq. but instead use oczs controller and firmware. And as you've said; two models. One highend with MLC flash and one mainstream with A19 tlc (sandisk already has one).That way, product stack will be less of a mess and cost savings when using TLC could also translate to lower MSRP. Which is always good, when competition is stiff.
patssle - Tuesday, August 26, 2014 - link
Once you lose trust it's hard to gain it back. Hard drives are crucial for reliability with all your important data stored on it (and hopefully backed up) - living with the thought of just MAYBE my hard drive isn't good enough is more than enough to not buy that brand. And I was quick to jump on the OCZ bandwagon back when they were the first to bring reliable SSDs mainstream without write delays with the Vertex.