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OCZ Summit MLC SSD OCZSSD2-1SUM120G E-mail
Reviews - Featured Reviews: Storage
Written by Olin Coles   
Wednesday, 03 June 2009
Table of Contents: Page Index
Features and Specifications
First Look: Summit SSD
Summit Internal Components
SSD Testing Methodology
Random Access Time Benchmark
Basic IO Bandwidth
Random Access IOPS Tests
I/O Response Time
Linear Bandwidth Speed
Sequential Performance Tests
Buffered Transaction Speed
Windows XP Startup Times
The Truth Behind Heat Output
Solid State Drive Final Thoughts
OCZ Summit Conclusion

HD Tune Pro Benchmarks

In the past, Benchmark Reviews has avoided HD Tune benchmarks because the software was so similar to others already being used in our articles. However, EFD Software has released several versions of the program, which add functionality and features with each revision. The latest edition of HD Tune Pro allows random access read and write testing, a feature not available to other software tools. HD Tune is a low-level test that will not operate on a drive which contains a partition, so Benchmark Reviews uses DISKPART to prepare hardware for these tests.

Random Access tests are divided into 512b, 4KB, 64KB, 1MB and random size test files sizes. The Random Access test measures the performance of random read or write operations. The amount of data which will be read varies from 512 bytes to 1 MB. Performance is reported in operations per second (IOPS), average access time, and average speed. Because it is our intent to compare one product against another, Benchmark Reviews has focused on random transfer size IOPS performance.


Benchmark Reviews has tested the OCZ Summit MLC SSD against a collection of top-performing Solid State Drives for our random IOPS benchmarks. By nature, Single-Layer Cell (SLC) SSDs perform far better at delivering high operational transactions per second when compared to Multi-Layer Cell (MLC) products.


The OCZ Summit, comprised of a Samsung SSD controller and 128MB of cache buffer, suffers the same fate as the dual-JMicron architecture in the Apex in Titan. Random read I/O per second (IOPS) is extremely good, however random write performance produces abismal results.


In the chart above, the OCZ Vertex EX enjoys the benefit of SLC construction, which delivers traditionally better IOPS performance. The OCZ Vertex (MLC) has the advantage of TRIM enhancements to the firmware, witht he Patriot Torqx and Super Talent UltraDrive ME showing signs of reduced write-to IOPS performance. Hopefully these two companies will address this issue with future firmware updates.

All of the above-mentioned SSDs appear to be well ahead of the OCZ Apex and G.Skill Titan SSDs, which utilize the dual JMicron controller in an internal RAID-0 array. The JMicron controller exhibits an inherent I/O weakness, producing miserably low single-digit IOPS performance, but the new Samsung controller appears no better for the OCZ Summit. Even the much older SLC products, OCZ's OCZSSD2 and the Mtron MOBI 3000 or 3500, all perform better during write-to testing.

Drive Hardware


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