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G.Skill FM-25S2S-64GB SATA-II MLC SSD E-mail
Reviews - Featured Reviews: Storage
Written by Olin Coles   
Tuesday, 16 December 2008
Table of Contents: Page Index
First Look: G.Skill MLC SSD
SSD Testing Methodology
System Speed Test Benchmarks
HD Tach RW Benchmarks
ATTO Disk Benchmarks
PCMark05 Benchmarks
Windows XP Startup Times
The Truth Behind Heat Output
Solid State Drive Final Thoughts
FM-25S2S-64GB Conclusion

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.

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 highest and lowest results removed before having 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.

In the tests below, Benchmark Reviews utilizes the HD TachRW tool to compare the fastest collection of desktop drives and competing SSD's we can get our hands on. Using the JMB322 SATA controller on the Gigabyte GA-EX58-EXTREME, HD Tach was used to benchmark the test SSD five times with the best results displayed below. It's important to note that HD Tach's Burst Speed result should be ignored for Solid State Drives due to the cache methods inherent to each memory controller architecture. There are times where this number will be extremely high, which is a result of the optimized cache used for SSD's.

The important numbers used for comparison are the sustained read and write bandwidth speeds, which indicate the true performance level of the product. Our featured test item, the G.Skill FM-25S2S-64GB SATA-II MLC SSD, performed at an impressive 123.2 MBps sustained read bandwidth and 79.8 MBps sustained write bandwidth. Compared against G.Skill's stated specification of 155/90, our results appread within range but still fall short of their optimistic maximum speeds.


The chart below illustrates the collected benchmark results for HD Tach RW on the JMicron JMB322 SATA controller, with the read and write bandwidth results added together to determine placement. Without much argument, the MemoRight GT MR25.2-064S SSD still enjoys a substantial lead over the entire field of storage products with an impressive 117.9 MBps read-from and 122.8 MBps write-to bandwidth speed (240.7 MBps collectively). In second place with a collective total of 233.0 MBps is the Mtron Pro 7500, which produced results only 3% behind the leader. After these two products, the collective bandwidth falls off slightly.

Unlike the System Speed Test benchmark that placed the G.Skill SATA-II SSD directly at the middle of that chart, HD Tach positions the G.Skill FM-25S2S-64GB in third place within our test results, nearly matched by the Patriot Warp v2 SSD in fourth place. Even still, the 123.2 MBps read and 79.8 MBps write bandwidth of the G.Skill SSD only trails behind the top-position leader by 15%. It's worth mentioning that the JMB322 SATA controller on our X58 motherboard actually received slightly lower performance results than the X48 motherboard using the JMicron JMB636 controller from previous tests.


The midrange SSD products appear to include Silicon Power SP032GBSSD750S25 in fifth place, trailed by the new Mtron MOBI 3500, OCZ Core SSD in seventh, and followed by the Seagate 7200.11 and Western Digital Raptor WD740ADFD 10,000RPM SATA hard drives finishing out the section.

Based on our test results, the lower-end drives are nowhere near the performance of the upper-performance section primarily because these are past-generation products. This section starts with the Mtron MOBI 3000, with the OCZSSD2-1S64G behind it, then the Crucial CT32GBFAB0, and finally the Super Talent MasterDrive MX SSD pulling up the rear.

Disk Hardware

In the next section, ATTO Disk Benchmark compares our range of drives and offers a different perspective from a unique test tool.


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