SanDisk Extreme 120GB 2.5" SATA III Solid State Drive (SSD) - SDSSDX-120G-G25

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5 out of 5
Total Reviews
Overall Satisfaction
Ease of Use

I received two drives from The first one was defective, it constantly frozen up intermittently. I updated firmware, etc, but cannot make it work properly. I spent two days to pinpoint what caused the freeze up. It was the SanDisk Drive. I got a replacement for the first one. The second one did not freeze up, but quite slower than other brands, Kingston Hyper X and Kingston SSDNow V100+. I bought it based on the on-line feedbacks, but the feedbacks are no quite true. There are many better faster and reliable drives for about the same price as this such as by crucial, samsumg, intel, and kingston. I think SanDisk uses the same name as their highly rated compact flash drive Extremes, but the " Extreme" on the SSD is an obvious mislead.

-Anonymous quote

Just got this drive today and put it through its paces in a desktop built in 2007, so SATA2 speed is all I can get. Even so, Crystalmark is showing sequential speeds @ 3x and 4k IOPS @ 50-100x my HDD. (I'd post the actual numbers, but does not allow for any readable formatting of such data in a review.) This drive came unformatted, but took all of 5 seconds to format using Windows' built in Disk Management Util. Chkdsk ran clean and S.M.A.R.T. is reporting 0 reallocations so far. Bought this drive to run my OS in my upcoming build. I have only had this drive one day, and will update if I have any problems. So far it runs problem free with Win8 CP. The drive came in a tiny box in a waterproof bubble wrap envelope and does NOT come with a 3.5 adapter bracket or sata cables, so plan accordingly. Actual useable space is ~112GB (Only storage companies still cling to decimal.) If you're still on the fence about SSD, it is an upgrade you_will_notice in ANY computer that supports SATA.

-Sunfire quote


by vMS on 5/1/2012

Replaced 2 Samsung 2.5" hard drives in my MacBook Pro 2011. The system has amazing boot & shutdown times compared to what this system used to do for me. Overall system performance is increased not just startup & shutdown, everything is quicker. Battery life increased! Clocked at the advertised SATA III speed. Used for my VMware & Citrix Lab on my MBP. I purchased 2 (Raid 0), on sale for $110 each. The reason why I bought this SanDisk SSD is because all of the other nice reviews on other sites. I also own the current Intel 520, Samsung 830, and Crucial M4 SSD's, and I honestly can say on my behalf the SanDisk Extreme is at the same level or a bit higher the other brands mentioned! 3 Year Limited Warranty is also nice and generous, a big plus!

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Woke up my sleepy old laptop

by Patrick on 5/5/2012

This drive is incredible. i purchased it because I was tired of waiting 3 to 4 minutes for my laptop to boot up. I knew that it would make a difference in boot up and shut down times, but I didn't think it would make such a huge difference on an older laptop (Dell D630 with Sata 1.5) The computer now boots in less than 30 seconds with Windows 7 64bit, and applications launch instantly. The computer also wakes from hybernation almost instantly. I just wish I had bought this sooner.

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Product Overview

SanDisk Logo

SanDisk Extreme® SSD (120 GB)

Improve your gaming experience with SanDisk Extreme SSD
  • DIY upgrade solution for PC/laptop can save you money
  • Fast load times easily handle graphic-heavy PC games
  • Faster bootup/shutdown1
  • Designed to withstand shock and vibration
  • Consumes less power than standard hard drives1
  • Quiet, cool operation with no moving parts

Upgrade Your PC/Laptop for a Performance Boost

The SanDisk Extreme® Solid State Drive is an ideal "do-it-yourself" upgrade solution for PC/laptop users. It delivers sequential read speeds of up to 550 MB/s and sequential write speeds of up to 510 MB/s2--boosting your computer's performance so you'll experience faster load times for gaming and other graphics-intensive applications.

The SanDisk Extreme Solid State Drive offers exceptionally fast boot-up and shutdown. It also comes in 480 GB3, 240 GB3, and 60 GB3 capacities.

Cost-Effective and Low Power Consumption

With the SanDisk Extreme Solid State Drive, you can simply replace your old hard drive rather than buying a new computer. The SanDisk Extreme SSD consumes less power than traditional hard drives1 so your battery lasts longer.

The drive is rated at 2.5 million hours mean time before failure4 (MTBF), so you can depend on it as a long-term upgrade solution.

Rugged Drive Engineered for Reliable Operation

Built with no moving parts, the rugged SanDisk Extreme SSD is designed to withstand shock and vibration for smooth, reliable operation. The drive runs quiet and cool.

Compatible with Most PCs/Laptops

The SATA 6 Gb/s SanDisk Extreme SSD is backward compatible with SATA 3 Gb/s and SATA 1.5 Gb/s. It works with any computer that has a 2.5-inch hard drive and is backed by a 3-year warranty5.

SanDisk Extreme SSD60 GB3120 GB3240 GB3480 GB3
PerformanceSeq. Read (up to)550 MB/s550 MB/s550 MB/s540 MB/s
Seq. Write (up to)510 MB/s510 MB/s520 MB/s460 MB/s
Rnd. Read (up to)13K IOPS23K IOPS39K IOPS44K IOPS
Rnd. Write (up to)82K IOPS83K IOPS83K IOPS46K IOPS
MTBFTelcordia, Stress Part2.8M hours2.5M hours2.0M hours1.4M hours
SanDisk Extreme SSD: Reviews and Awards
Review from

"The SanDisk Extreme SSD boasts some of the fastest speeds we have recorded for a client SSD, with exceptionally strong 4K random read and randome write speeds." -

Review from

"This is not only the highest performing SandForce drive on the market, but this is the highest performing consumer SSD..." -

Review from The

"The SanDisk Extreme 240GB SATA 3 SSD is a definite recommendation as its introductory price is as good to see as its performance." - The

Review from

"The SanForce controll


Manufacturer SanDisk
Mfg Part# SDSSDX-120G-G25
SKU 227072806
UPC 619659073428
UPC 14 00619659073428
Product Guide SanDisk Store Here
Noise reduction for quiet drive operation
Low power consumption for cooler operation and extended battery life
Delivers reliability, durability, and high-performance for your laptop or PC
Designed to withstand shocks and vibration for high durability
Upgrade your PC with the durability, reliability, and performance of a solid state drive
Launch applications faster and enjoy quicker system boot ups/shut downs
Lower power consumption than a standard hard drive
2.5” SATA 6 Gb/s
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