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OCZ Summit MLC SSD OCZSSD2-1SUM120G E-mail
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Written by Olin Coles   
Wednesday, 03 June 2009
Table of Contents: Page Index
OCZ Summit MLC SSD OCZSSD2-1SUM120G
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

EVEREST Disk Benchmark

Many enthusiasts are familiar with the EVEREST benchmark suite by Lavalys, but very few are aware of the Disk Benchmark tool available inside the program. The EVEREST Disk Benchmark (version 2.06.37) performs linear read and write bandwidth tests on each drive, and can be configured to use file chunk sizes up to 1MB (which speeds up testing and minimizes jitter in the waveform). Because of the full sector-by-sector nature of linear testing, Benchmark Reviews endorses this method for testing SSD products, as detailed in our Solid State Drive Benchmark Performance Testing article. EVEREST Disk Benchmark does not require a partition to be present for testing, so all of our benchmarks are completed prior to drive formatting.

The SSD products tested with EVEREST Disk Benchmark are connected to the Intel ICH10R SATA controller resident on the Gigabyte GA-EX58-UD4P motherboard. Using the 1MB block size, read performance of the OCZ Summit 120GB SATA-II MLC SSD OCZSSD2-1SUM120G measured an average 239.0 MBps and forms a near-perfect line as it scans across all sectors. Oddly enough, these results were nearly identical to the MLC Vertex SSD and others sharing the Indilinx construction. Linear write-to tests were next...

OCZ-Summit-120GB-SATA-II-MLC-SSD-OCZSSD2-1SUM120G-Linear-Read-1.png

Linear disk benchmarks are superior tools in my opinion, because they scan from the first physical sector to the last. A side affect of many linear write-performance test tools is that the data is erased as it writes to every sector on the drive. Normally this isn't an issue, but it has been shown that partition tables will occasionally play a role in overall performance. The large 128MB buffer on the Summit SSD helped our linear testing, as shown in the waveform chart below.

Although the chart makes the linear write performance appear unsteady in a few areas, the results seen here are actually very good compared to most other SSD products we've tested in the past. The OCZ Summit SSD recorded an average linear write-to speed of 186.2 MBps , which falls slightly below the maximum speed of 191.1 MBps.

OCZ-Summit-120GB-SATA-II-MLC-SSD-OCZSSD2-1SUM120G-Linear-Write-1.png

The chart below shows the average linear read and write bandwidth for a cross-section of other SATA drives attached to the Intel ICH10 Southbridge:

EVEREST_Disk_Benchmark_ICH10_RAID0.png

Linear bandwidth certainly benefits the Solid State Drive, since there's very little fluctuation in transfer speed. Hard Disk Drive products decline in performance as the spindle reaches the inner-most sectors on the magnetic platter. I personally consider linear tests to be the single most important comparison of storage drive products, although hard disk drive products decrease performance as they reach the edge of the spindle, SSD products operate at a relatively smooth speed from start to finish.

Drive Hardware



 

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