|OCZ SATA-II 32GB 2.5-Inch SSD OCZSSD2-1S32G|
|Reviews - Featured Reviews: Storage|
|Written by Olin Coles|
|Monday, 12 May 2008|
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HD Tach RW Benchmark Results
EDITORS NOTE: Please read Solid State Drive (SSD) Benchmark Performance Testing to understand how the benchmarks used in this article should be interpreted.
In the tests below, Benchmark Reviews utilizes the HD Tach RW tool to compare the OCZ SATA-II OCZSSD2-1S32G 32GB 2.5-Inch Solid State Drive against the fastest collection of desktop drives and competing SSD's we can get our hands on.
HD Tach is a software program for Microsoft Windows that tests the sequential read, random access and interface burst speeds of the attached storage device. For the record. every single product tested was brand new and never used. HD Tach allows write-bandwidth tests only if no partition is present. Additionally, each and every product was tested five times with the average result displayed here. The graphical user interface (GUI) of the Windows-based benchmark tool HD Tach is very convenient. and allows the test product to be compared against others collected on your system or those registered into the Simpli Software database.
Comparing the OCZSSD2 to the Western Digital Raptor may amount to the largest factor of influence for most enthusiasts considering the new SSD technology in their performance desktop computers. Right away, the burst speed of OCZ's new SATA-II SSD is phenomenal! 160.7 MBps burst is the fastest we've seen out of any SSD or HDD tested thus far, and completely dominates the Raptor's 127.9 MBps burst. Even the sequential write speed is faster than the Raptor's read speed, which over the span of capacity begins to fall off in performance even further. While not shown in our charts, we have tested all four variations of the Raptor and choose to display the results of the 74GB version because of the widespread popularity among gamers. All four Raptor hard drives performed nearly identical, with only very negligible differences in burst and average speeds. Suffice it to say, the Western Digital Raptor series is no longer a threat to current-generation SSD's.
Next, we compare the second generation OCZ SATA-II SSD against Mtron's MOBI SSD. The MOBI 3000 Solid State Drive is a budget-minded product for entry-level needs, yet it performs nearly as well as Mtron's top offerings. In the chart below, the MOBI was left trailing by a very large margin to the comparably priced OCZSSD2-1S32G. I used to give the MOBI MSD-SATA3025 full credit for being such a well-performing SSD with plenty of value, but it looks like my opinion has just been changed. Judging from the collection of waveform graphs below, the OCZ SATA-II SSD might just be the new king of the hill... but let's not be too hasty.
Comparing OCZ's best SSD against Mtron's budget model isn't exactly fair, despite matching price tages. So in our next match-up we compared the OCZ SATA-II SSD OCZSSD2 head-to-head against Mtron's fastest model: the Mtron Pro 7000 2.5-Inch 16GB SSD SATA7025. At first I was a little concerned about my test results, since the 7000 Pro seemed to be producing results very similar to the MOBI 3000. But after nine total tests I was convinced that the Mtron 7000 Pro really wasn't much different, and hardly worth the extra cost.
While the results were close, the OCZ SATA-II SSD produced a far superior burst speed which outperforms the Mtron 7000 Pro's respectable 113.0 MBps. Looking over the sustained read and write speeds, it became clear that the Mtron 7000 Pro's 112.2 MBps best speed was nowhere near the same level of performance. At this point, it seems that Mtron had better improve its technology very soon, or they won't be a contender in the SSD market for much longer.
The last chart I present to you pits our former speed champion, the MemoRight GT MR25.2-064S SSD, against the OCZ SATA-II SSD OCZSSD2-1S32G. A few months back when I tested the MemoRight GT it produced such impressive results I wondered how long it would be before the market would catch up. Apparently, it takes less than two months. Looking at the results below, the MemoRight GT still reigns supreme in sequential write speed, offering the best bandwidth we've seen at an impressive 122.8 MBps.
But opening up applications and loading programs doesn't call upon the sequential write speeds, and most users would never notice a difference unless they were compiling video or large audio files. Some of the most critical performance areas are in the read speed; both the burst and sequential sustained read. To this end, the OCZ OCZSSD2 has set the bar high, producing a sustained read speed of 156.4 MBps and setting another new record. Samsung's MCBQE32G5MPP-0VA is clearly a much-improved version of their former SSD component line, and this time around OCZ has redeemed themselves.
Just for good measure I have included a chart to compare the test results of OCZ SATA-II SSD OCZSSD2 against several of the other drives we tested, including Seagate's newest 7200.11 Hard Disk Drive. The 7200.11 features a cache buffer twice the size of previous hard disks, totaling 32MB. This comes into play early on in the tests, as the Seagate 7200.11 actually beats out the Western Digital Raptor in sequential read speed performance by a long shot.
Pressing along with its 160.7 MBps burst, the OCZSSD2-1S32G 32GB 2.5-Inch Solid State Drive was left untouched by Seagate's 7200.11 burst of 120.0 MBps; which is considerably close to the MemoRight GT's 123.7 and Raptor's 127.9 MBps. Unlike the previous comparison however, the Seagate 7200.11 puts all 32MB worth of cache buffer to use as sequential read speed reaches 88.8 MBps on average, compared to the already phenomenal 156.4 MBps produced by the OCZSSD2 and the less-impressive 117.9 MBps offered by the MemoRight GT. Just one good look at this chart, and you can see that history has been written.
EDITORS NOTE 05/14/08: During our initial tests, we discovered that HD Tach produced different results for our test subjects when we changed BIOS settings from ACHI to IDE mode for the JMicron SATA controller. Although our initial tests only represent standard IDE mode, re-testing is underway.
UPDATE 05/16/08: After several different re-tests of the OCZSSD2, the HD Tach results seem to show a very different story. Until we receive a response from OCZ, I will simply state that the HD Tach results should be lightly weighted with this particular product. In our last series of tests the burst speed was 272 MBps on average, which seems to me on the high side of things, and is so dramatically different from the 161 MBps seen from our initial tests that I cannot draw a solid conclusion. The sustained read speeds from the re-test average 93 MBps, and the sustained write speeds are averaging 74 MBps.
OCZ RESPONSE 05/19/08: OCZ does not give consideration to the HD Tach burst speed result, because each cell of the NAND flash chips are very different so that the burst speed reading does not mean anything in regards to performance. Sometimes burst speed can be accessible in 5-nano secs and sometimes it can be 20-nano secs, which is why the NAND maker guarantees 20-nano seconds. That is why the burst speed does not have any important role in SSD products in particular. The important role is how fast it can be accessed and sector read and write time.
In the next section, ATTO Disk Benchmark compares our range of drives and offers a different perspective from a unique test tool.