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  • SanDisk Extreme II 240GB SATA 6.0GB/s 2.5-Inch 7mm Height Solid State Drive (SSD) With Read Up To 550MB/s & Up To 95K IOPS- SDSSDXP-240G-G25
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SanDisk Extreme II 240GB SATA 6.0GB/s 2.5-Inch 7mm Height Solid State Drive (SSD) With Read Up To 550MB/s & Up To 95K IOPS- SDSSDXP-240G-G25

by SanDisk
268 customer reviews
| 21 answered questions

Available from these sellers.
240 GB
  • Launch applications faster and enjoy quicker system boot ups/shut downs
  • Sequential Read/Write up to 550MB/510MB per sec.
  • Random Read/Write up to 95000 /78000 IOPS
  • Low power consumption for cooler operation and extended battery life; Power Consumption (active): 0.22w
  • Noise reduction for quiet drive operation; Vibration (Operating/Non-operating) : 5 gRMS, 10-2000 HZ / 4.9 gRMS, 7-800 HZ
  • Durable Stainless-steel casing in 7.0mm thickness; Shock Resistance up to 1500 G @ 0.5 m/sec
  • Operating temperature: 32ºF to 158ºF (0ºC to 70 ºC)
  • MTBF: 2.0M Hours, product backed with five year limited warranty
3 new from $307.80 1 refurbished from $286.20

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Capacity: 240 GB
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Product Description

Capacity: 240 GB

Improve the performance and extend the life of your computer or gaming console.
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Fast Performance for Gaming, Multimedia, and More

Upgrade your computer or gaming console and enjoy fast, reliable performance with the SanDisk Extreme II Solid State Drive. This SSD features a storage capacity of 240 GB (1) and delivers sequential read speeds of up to 550 megabytes per second (MB/s) and sequential write speeds of up to 510 MB/s (2). This allows you to multitask, run graphics-intensive applications, and transfer large files with ease, as well boot up and shut down your machine without having to wait. SanDisk's tiered caching across storage layers optimizes the write speed and disk endurance and ensures your data is stored in the safest place.

Designed to Keep Your Data Safe

Housed in a durable aluminum case, the SanDisk Extreme II has been engineered to resist shocks and vibrations, preserve the integrity of your data, and prevent data loss. Dynamic and static wear leveling help extend the life of the drive, while over-provisioning and over-clocking ensure consistent performance even under the heaviest workloads. Other features include bad block management, which prevents uncorrectable memory errors, and thermal throttling, which protects critical drive components against extreme temperatures.

Quiet, Stable Operation and Low Power Consumption

Unlike traditional hard disk drives, solid disk drives contain no moving parts, making them cooler and quieter and less likely to break. SSDs are also more energy-efficient than standard HDDs for longer laptop battery life. According to a SanDisk research paper, an SSD can extend the life of a laptop by up to 33 percent (3).

SanDisk SSDs are engineered to deliver sustained high performance over time.
Sustained High Performance for Gamers and Professionals

Rather than focusing on peak speeds, which may be achieved only for a few seconds at a time, SanDisk maximizes real operating speeds and performance consistency over a long period of time. Thanks to a Mean Time Between Failures (MTBF) of 2 million hours (5), the SanDisk Extreme II can deliver years of fast, reliable performance.

Tiered caching across storage layers increases write speed and disk endurance.
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Faster Write Speeds and Safer Data with nCache

To optimize the user experience, the SanDisk Extreme II contains nCache technology, a large, non-volatile write cache that consolidates small writes to boost random write performance and the long-term data endurance of the drive. This proprietary technology from SanDisk is designed to mediate how modern-day operating systems and flash memory interoperate. The result is faster response times and better multitasking without stuttering.

An ideal upgrade for a laptop or desktop computer or a gaming console.
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Reliable Performance with an Extended MTBF

Like other SanDisk solid state drives, the SanDisk Extreme II offers a Mean Time Between Failures (MTBF) of 2 million hours based on a parts stress analysis. MTBF is the predicted amount of time the drive will operate without failure and is a measure of reliability. Consequently, you can get more out of your computer or gaming system with less downtime.

This SSD monitors and provides updates on its health status.
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Monitor the Health of Your SSD in Real Time

Thanks to S. M.A. R.T. (Self-Monitoring, Analysis, and Reporting Technology) capabilities, this solid state drive can detect and report on various indicators of reliability and alert you of an impending drive failure while there is still time to take action.

SSDs deliver cool, quiet operation and consume less power than typical HDDs.
The Advantage of SSDs

Why replace your computer's hard disk drive with a solid state drive? SSDs offer a number of advantages over traditional hard drives. Because they contain no moving parts, SanDisk SSDs are less likely to break and they deliver cooler and quieter operation and consume less power than standard 7,200 RPM hard drives (4). In addition, SanDisk SSDs are cased in aluminum and are rigorously tested to withstand shocks and vibrations. This, along with fast read and write speeds for games and more, makes an SSD a compelling option, and it's easy to remove an HDD and install an SSD without losing any data.

Legal Disclaimers

(1) 1 gigabyte (GB) = 1,000,000,000 bytes. Actual user storage less. (2) Up to stated speeds; performance may vary depending upon drive capacity, host device, OS and application. 1 megabyte (MB) = 1 million bytes. (3) SanDisk SSD Deployment Whitepaper, 2013. (4) As compared to 7200 RPM SATA 2.5” hard drive. Based on published specifications and internal benchmarking tests. (5) Based on internal testing using Telcordia stress part testing.

Product Details

Capacity: 240 GB
  • Product Dimensions: 4 x 2.8 x 0.3 inches
  • Shipping Weight: 1.6 ounces
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B00COF7E3K
  • Item model number: SDSSDXP-240G-G25
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (268 customer reviews)
  • Amazon Best Sellers Rank:
  • Product Warranty: For warranty information about this product, please click here
  • Date first available at Amazon.com: June 3, 2013

Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

Size: 240 GB Vine Customer Review of Free Product ( What's this? )
I now own this Extreme II SSD.

I also own a 240 GB SanDisk Extreme SSD where Windows 8 was installed. This is the original Extreme not an Extreme II.

I copied the original Extreme(full Win 8 backup) to this new Extreme II drive and did a comparison. I would struggle, in real world testing, to be able to tell you what the difference in speed does for me between these two drives.

That's going SanDisk Extreme SSD to SSD. If you are still running on a platter based hard drive, the speed boost seen either in the Extreme II, or the now less expensive Extreme, is absolutely one of the best choices you can make in order to make your PC (that's Mac or Windows based PC) perform at a level you can't see with a platter drive.

What I recommend is to buy an SSD for the OS and apps. Use a platter based drive, 1 TB+, for all of your media and files. I also highly recommend a physical USB3 backup drive to backup your data as well.

So what's the difference on paper between the Extreme and the Extreme II? Random reads and writes are roughly 40% faster on the Extreme II. Random reads are only 7% faster. Sequential reads and writes are about on par, with the Extreme (original) eking out about 10 MB per second better than the Extreme II. If I had a choice though, the Random Read/Write, being both a lot, and a little, better on the Extreme II, and if there was price parity, I would go with the Extreme II. You do more random reads/writes than sequential, generally speaking. You aren't likely to really notice the difference in practice moving from one to the other, unless you do a lot of hard drive intense operations.

If you are a gamer, just go with the Extreme II now.
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24 of 28 people found the following review helpful By hardgamer on July 2, 2013
Size: 240 GB
I recently got a brand new laptop (Lenovo ThinkPad T431s) that comes with a Toshiba 7200rpm HDD so I decided to get an SSD to speed things up because I got tired of waiting for applications to load. So I decided to go with a SanDisk Extreme II 240 GB and man, SSD's will make any computer feel like it's from the future. The ThinkPad T431s is already fast because it comes with 4GB of ram and a core i5-3337U but swapping the HDD with an SSD made it 100x faster. I feel like HDDs really hold back a computer's performance. The SanDisk Extreme II 240GB literally blew me away by the performance that it has. My Windows 7 disk experience score went from 5.4 to 7.9 which is the highest it can go on Windows 7.

I do a lot of backups and transfer large files with my laptop and it used to take forever when I had my HDD but now everything is blazing fast. I know that this product literally came onto the market just a few days ago but it seems it's receiving very good reviews and so far I'm very impressed! When I was on the HDD, I would get around ~5hrs of battery life but now I'm getting around 6-7hrs. I travel a lot so battery life is very important to me and being able to have an extra 1-2hrs is awesome. This SSD is quite an improvement from my Toshiba HDD that I had before in my laptop but I'm really impressed by how lightweight this new drive is and how fast it.

It also generates almost no heat and is obviously silent to the ear. I couldn't stand the weird noises that my Toshiba HDD would make during the night. The access and read speed are as advertised and I did a benchmark with CrystialDiskMark, the results are below. I use my laptop for video editing/web development so I use programs like Adobe After Effects, Dreamweaver and Photoshop quite a lot.
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12 of 13 people found the following review helpful By Virginia Guy on July 21, 2013
Size: 120 GB Verified Purchase
I have used many SSD's over the years and I can easily say I am the most pleased with this one. It is fast, lightweight and extremely reliable. In order to fully utilize the benefits of this SSD in either Windows or Linux, I would recommend the following:


- TRIM is enabled by default, so you don't have to turn it on.
- Disable System Restore. This wastes writes on the device and shortens its lifespan.
- Disable your pagefile. When using an SSD this quick it is not needed and it also wastes writes. Just make sure you have at least 4GB of RAM in your system if you do this.
- Turn off timestamps on NTFS. This is unnecessary and can reduce the life of your SSD.


- Turn on TRIM. You can do this by adding discards to your /etc/fstab. You may also want to add noatime as well.
- Add a persistent RAM Disk assuming you have adequate amounts of RAM.
- Use a low latency I/O scheduler (e.g. deadline).

With these options enabled, you will get the most out of your SSD and wonder why you waited so long to get rid of you old spinning hard drive.

Note: If you want to make an exact copy of your existing hard drive to your new SSD:

- Grab and external USB drive carrier that will accept your old hard drive.
- Download a Gparted Live boot disk.
- Take your old hard drive and place it into the external USB drive carrier.
- Install your new SanDisk SSD.
- Boot your system into the Gparted Live Boot Disk.
- Run Gparted and note the drive ID for both your new drive and old.
- Open a terminal and run: dd if=/dev/sdX of=/dev/sdZ (where sdX is your OLD drive and sdZ is your new hard drive. The actual ID's will most likely be /dev/sda and /dev/sdb).
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