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OCZ Vertex SSD RAID-0 Performance E-mail
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Written by Olin Coles   
Friday, 03 April 2009
Table of Contents: Page Index
OCZ Vertex SSD RAID-0 Performance
Features and Specifications
First Look: OCZ Vertex SSD
Vertex SSD Internal Components
SSD Testing Methodology
Random Access Time Benchmark
Basic IOPS Performance
Linear Bandwidth Speed
I/O Response Time
Buffered Transaction Speed
Windows XP Startup Times
The Truth Behind Heat Output
Solid State Drive Final Thoughts
Vertex RAID-0 Conclusion

Heat Output Results

Solid State Drives are not quite a household technology (yet), and because of this the marketing propaganda has become as high-pressure as any political campaign. Benchmark Reviews has tested SSD products from many manufacturers (to name a few: Crucial, G.Skill, Intel, MemoRight, Mtron, OCZ, Patriot, Samsung, Super Talent, and Silicon Power) and each has taken full advantage of the vast new technology improvements offered by their products. Some manufacturers have made claims that other websites have taken to the mat, and wrestled with a topic (such as power consumption), only to later be criticized for improperly testing the hardware. Well, we don't intend on repeating the mistakes of our mega-site affiliates, which is why we plan to approach new methodology in small bites.

There have been television shows made famous on the principal of dispelling rumors and myth. This section is not exactly meant to imitate that concept, although we do separate fact from fiction. The first myth we challenge is the claim that Solid State Drives produce no heat. Nearly every manufacturer selling Solid State products has at some point claimed their SSD products do not produce heat, which is believable on many levels because there are no moving parts. Well, chances are very good that you have already peeked at the illustration below, so I won't delay in explaining what we've found.

Using some spare Styrofoam panels, I constructed a small unit to shield two 2.5" notebook drives from the nearby power supply. Although not pictured, there was also an open-top wall section that surrounded this unit, further insulating it from thermal effects of any nearby environment. Since there was no data connection made, these tests are what I would consider to be 'idle'. The power leads were connected and power was delivered for twenty minutes before temperatures were taken with a non-contact IR thermometer at approximately six inches from surface. The rooms ambient temperature as measured directly at the test site was exactly 19.0°C at the time I recorded the results for the units pictured.


In the image above there are only two devices pictured of a four-cell test platform. On the left side is the Hitachi Travelstar 7K100 60GB HTS721060G9SA00 7,200 RPM SATA 2.5" Hard Disk Drive, and on the right is one our Solid State Drive test subjects. The Hitachi 7K100 is one of the few 7200 RPM notebook hard drives available to OEM builders, and since these faster spinning disks use more power they also create more heat as a by-product. Although not pictured because of camera direction, my test rig setup compares up to four products at once. The results of other SSD test products are shown in the charts below.

Temperature Readings at 19.0°C

Device Name Ambient Drive Temp
OCZ Apex Series SSD 19.0°C 31°C
Mtron Pro 7500 SSD 19.0°C 31°C
Mtron Pro 7000 SSD 19.0°C 29°C
Mtron Pro 3500 SSD 19.0°C 29°C
OCZ Core Series SSD 19.0°C 28°C
OCZ Vertex Series SSD 19.0°C 27°C
Hitachi Travelstar 7K100 HDD 19.0°C 27°C
Samsung MCCOE64G5MPP-0VA SSD 19.0°C 27°C
Silicon Power SP064GBSSD25SV10 SSD 19.0°C 27°C
Super Talent FTM60GK25H SSD 19.0°C 27°C
Mtron MOBI 3000 SSD 19.0°C 27°C
Silicon Power SP032GBSSD750S25 SSD 19.0°C 26°C
G.Skill FM-25S2S-64GB SSD 19.0°C 26°C
Crucial CT32GBFAB0 SSD 19.0°C 25°C
Patriot Warp SSD 19.0°C 25°C
Hitachi Travelstar 5K160 HDD 19.0°C 23°C

The message here is simple: Although the heat produced by SSD's under load is usually the same as what the Hard Disk Drive generates at idle, Solid State Drives still produce heat. Don't let marketing hype fool you into believing that Solid State Drives are cold-operating devices just because there are no moving parts. Cooler, yes. Cold, no.

Drive Hardware



# MRAnthony 2010-03-18 04:56
I'm always wary of Mbps(bits) and MB(bytes), too many people use them interchangably. The Ads on the same page for this product say "250MB" not bits, so what is the Atto 249 MBps maximum read bandwidth??? bizarre?
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# El Presidente'Marko 2010-11-27 01:09
Anthony, typically Mbps (Megabits) refers to a transfer speed whereas MBs refer to a capacity. Whether ignorant people use them interchangeably or not, using this guideline you should always be able to figure out which it is. :)
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# RE: El Presidente'Olin Coles 2010-11-27 07:51
I'm not exactly clear which side of the argument you're on here, Marko. Read up on the specifications for any SSD product, and you'll see their bandwidth speed represented as MB/s.
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# DKSGDKSG 2012-04-18 00:41
MB when used in advertised capacity is not Megabytes, it's Million Bytes. Bytes or Bits will be denoted by B or b respectively. When the vendor advertise 250MB, it means 250 Million Bytes which is approx to 244.14 Mega Bytes. This 244.14 is RAW Megabytes and have not included partitioning and other possible overhead used in the system which may yield lower capacity than 244.14 Megabytes.

When used on the bandwidth, make sure you fully understand what the bandwidth measures. In different network or cable setup, the bandwidth could be shared and a single device do not usually get that kind of bandwidth on average. On network, typically vendors means Megabytes when they denote MB unless otherwise denoted using fineprints, but the usual price is using Megabits which looks a lot better on paper.
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# RAID-0 Setuptypoknig 2010-05-10 09:52
How exactly did you have your RAID-0 setup during this test? For instance, were you using the Intel Matrix Storage Manager or some other method?
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# Intel ICH10Olin Coles 2010-05-10 15:11
RAID-0 was built using the motherboard's Intel ICH10 controller.
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# Stripe sizeJ Walsh 2010-05-12 08:46
What stripe size was used in the RAID 0 setup and why?
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# 128KB Stripe SizeOlin Coles 2010-05-12 08:49
This articles used a 128KB stripe size, which is the largest the Intel ICH10 controller allows for RAID-0 sets.
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# Benchmarking A Bigger RAID 0 Arraytypoknig 2010-06-08 22:06
Hi, I have been running the same benchmarks you ran on my RAID 0 array which has 3 120GB OCZ Vertex drives compared to the 2 used in this benchmark. My results have not even been close to what I thought I would be getting after reading this review. I have posted some info about my results here:

Maybe you can take a look at my stuff and tell me why my linear read in Everest does not produce a flat line like yours (I realize I used 512MB block size, but the 1MB block size produced identical results), and why my numbers are so much lower when they should be higher. I have also ran the benchmarks without an OS (or any data) on the array at all, and the results are very similar. Any thoughts?
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# Partition alignmentOlin Coles 2010-06-14 19:43
I'm betting that our results are higher because of drive conditioning: partition alignment, diskpart clean all, secure erase, etc. Since TRIM doesn't always pass through to RAID arrays, used drives will produce lower performance results.
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# sanitary erasetypoknig 2010-11-27 21:23
I have had this problem fixed for quite some time now. If you go to the link I provided in my last comment you will see that using sanitary erase did trick for me... so as you said, "drive conditioning" was my problem. To keep my drives as clean as possible I use the "Wipe Free Space" feature of CCleaner. Does the same thing as wiper.exe but it works when drives are in RAID (unlike wiper.exe).
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# flash, not dramscott 2010-12-02 15:43
Samsung K9HCG08U1M-PCB00 is flash memory, not DRAM... this is why we call it an SSD
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# 4-drive RAID 0Remo 2010-12-23 08:42
Mr Coles, do you have any idea how would a 4 SSD in RAID-0 perform? Would you use it as the boot drive in a windows 7 system?
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# RE: 4-drive RAID 0Olin Coles 2010-12-23 08:44
You should look into the OCZ RevoDrive 2 PCI-Express SSDs, which fit four SSDs into RAID-0 on one board. Our review is here:
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# RE: RE: 4-drive RAID 0Remo 2010-12-23 08:57
I definitely will look for it. But, how much gain in performance would you expect when upgrading from a 2-drive raid-0 to a 4-drive raid-0?
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