G.SKILL FM-25S2S-64GBF1 Falcon Indilinx Review

This review is on an older drive which I got as a warranty replacement for my G.SKILL FM-25S2S-64GB JMicron Review, the biggest difference between this drive and it’s predecessor is the use of the Indilinx Controller which we previously looked at in the Corsair X64 64GB Indilinx Review. For those that read my review on the previous drive it straight out sucked because the controller didn’t have enough cache so it caused Windows to stutter, this new drive has 256Kb of cache versus 16Kb in the previous g.Skill SSD.

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G.SKILL FM-25S2S-64GBF1 Specifications:

  • Indilinx Barefoot controller (90nm fab process, 256Kb cache)
  • Available in 64GB, 128GB, and 256GB capacities
  • Interface: SATA 1/2
  • Sequential Read: up to 230MB/s
  • Sequential Write: up to 135MB/s
  • Sustained Write: Up to 100MB/s
  • Access Time: < 0.2ms
  • Shock Resistant: 1500G/0.5ms
  • Vibration Resistant: 20G/10~2000Hz with 3 Axis
  • Operating Voltage: DC 5V
  • Power Consumption: 280mA~330mA
  • Operating Temperature: 0°C ~ +70°C
  • MTBF: >1,500,000 Hours
  • Life expectancy: +1,500,000 Hours(MTBF)
  • Data Retention: > 5 years at 25°
  • Data Reliability: Built-in EDC/ECC function
  • Certification: FCC/CE/RoHS
  • 2 Year Warranty

Looking at the specs above we should see a noticeable increase in read speeds, write speeds, and no stuttering.

G.SKILL FM-25S2S-64GBF1 Benchmarks

HD Tach Benchmark

G.SKILL FM-25S2S-64GBF1 Benchmarks

Although these speeds aren’t that fast compared to modern SSD, they blow the previous G.SKILL FM-25S2S-64GB out of the water (132.6MB/s vs 214.6MB/s).

Atto Disk Benchmark

Atto Disk Benchmark

The ATTO Disk Benchmark scores are very similar to the Corsair X64 drive, this is to be expected as they have the same controller.

AS SSD Disk Benchmark

AS SSD Disk Benchmark

Overall the read/write speeds aren’t that bad, but they aren’t anything to write home about.

AS SSD IOPS Disk Benchmark

AS SSD IOPS Disk Benchmark

The raw speed of a drive can sometimes be deceiving, and that is why we look at how many IO operations per second that a drive can do. To put these numbers into perspective my new Edge Boost Pro scored 34,173 IOPS for the 4K 64 Thread write test, and 24,591 IOPS for the reading test (even those aren’t high compared to some other SF-2281 drives).

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Conclusion:

After the disappoint of the original G.SKILL FM-25S2S-64GB, the successor is noticeable faster. However, if you are looking to get an SSD you should consider a newer drive based on the Sandforce Controllers.

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Brand Name
G.KSILL
Product Name
G.Skill Falcon 2.5" 64GB SSD SATAII (FM-25S2S-64GBF1)
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