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XPG by ADATA SX900 256GB 2.5 Inch SATA III Excellent Read up to 560MB/s Solid State Drive (ASX900S3-256GM-C)

4.3 out of 5 stars 106 customer reviews
| 14 answered questions

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256 GB
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  • New Expanded Capacity SSD, 7% more drive space.
  • SATA 6 GB/sec SandForce 2281 controller
  • Sequential Read/Write is 555/530 MB/S
  • Up to 85,000 IOPS
  • Full Windows TRIM Support
  • 2.5-Inch to 3.5-Inch Mounting Bracket Included
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Product Description

Capacity: 256 GB

The XPG (Xtreme Performance Gear) SX900 solid state drive uses new optimized firmware to utilize greater storage capacity of the NAND Flash components. With superior NAND Flash technology, the XPG SX900 SSD reaches new levels of stability and performance with expanded capacities. Utilizing the SandForce 2281 controller, the SX900 512 GB SSD boasts a 7% increase over common SSD's in the market today. A milestone in ADATA's history of NAND Flash product brought to you. With maximum sequential read and write speeds of 550/530 MB per second and maximum random 4K write speeds as high as 85,000 IOPS, the ADATA XPG SX900 SSD is poised to take its place as a market and performance leader!

Product Information

Capacity:256 GB

Technical Details

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Summary : Screen Size, Screen Resolution, Graphics Coprocessor, Graphics Card RAM
Hard Drive 256 GB
Brand Name ADATA
Item model number ASX900S3-256GM-C
Hardware Platform PC, Mac, Unix
Item Weight 2.6 ounces
Product Dimensions 2.1 x 1.3 x 0.2 inches
Item Dimensions L x W x H 2.1 x 1.3 x 0.2 inches
Color Black
Flash Memory Size 256

Additional Information

ASIN B007M7XS94
Customer Reviews
4.3 out of 5 stars 106 customer reviews

4.3 out of 5 stars
Best Sellers Rank #820 in Computers & Accessories > Data Storage > Internal Solid State Drives
Shipping Weight 5 ounces
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item is not eligible for international shipping. Learn More
Date First Available April 4, 2012

Warranty & Support

Amazon.com Return Policy:You may return any new computer purchased from Amazon.com that is "dead on arrival," arrives in damaged condition, or is still in unopened boxes, for a full refund within 30 days of purchase. Amazon.com reserves the right to test "dead on arrival" returns and impose a customer fee equal to 15 percent of the product sales price if the customer misrepresents the condition of the product. Any returned computer that is damaged through customer misuse, is missing parts, or is in unsellable condition due to customer tampering will result in the customer being charged a higher restocking fee based on the condition of the product. Amazon.com will not accept returns of any desktop or notebook computer more than 30 days after you receive the shipment. New, used, and refurbished products purchased from Marketplace vendors are subject to the returns policy of the individual vendor.
Product Warranty: For warranty information about this product, please click here

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Size: 256 GB Verified Purchase
Picked this drive up in February 2013, Installed the latest (at the time) windows 8 pro. Was using it in my everyday laptop for school/work. It was a really, really fast hard drive which would accomplish a full windows 8 boot combined with my intel i5 third gen and 8gb ddr3 in less than 10 seconds. I have nothing bad to say about the drive itself, it was very useful in doing photo and video editing along with allowing me to steam through everyday activities at breakneck speed. I am however sad to say that it only lasted until the second week in October 2013. A total lifespan of 7 months. If asked in July how I would rate this item, I would have easily given it 5 stars, but a dead drive is a dead drive and I should hope that a 200$ hard drive lasts me longer than pickled eggs would. I have contacted Adata with my information and I will update this review if anything gets done to help me in the meantime. I was very satisfied with the drive up until it died. I had purchased it thinking it might outlast some of the HDD's I have had in the past but unfortunately most of them are still running while this one sits dead with probably 20gb's of un-backed up data on it. I generally back up to an external, and back up my external to another off-site external once a month, guess I need to change my schedule.

Update: February 2014

Sent the drive to ADATA and they were very kind and helpful with replacing the unit as it was still covered under warranty. I must say they have very good customer service and always respond within 24/48hours on business days. However the return shipping which they were responsible for led to a lost shipment through USPS. Im still trying to resolve this with the company and I will update any progress. They have been less helpful from the point the shipment became lost but I am still trying to resolve it with them and I will certainly update this again if I get an SSD back from them like the one I sent.
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Size: 256 GB Verified Purchase
I got 2 of these Adata xpg sx900 256gb in raid 0 for my gaming rig! It is just awesome! Best drives ever!!! Can't go wrong with the price and the quality! From "starting windows" to desktop in 6 seconds!! (in raid obviously... single drive takes about 10 to 13 seconds more or less, still pretty fast!) I will upload a couple of photos with benchmarks! There's not much else to say, they are drives, they are great quality, at least 4 to 5 years will pass before a failure. 3 year warranty so, overall 100%. FYI: I read a lot of reviews and saw a lot of videos before buying them because they are my first solid state drives. It just seems Adata went for all or nothing with this drives. (Btw sorry for my english is not my native language). I almost forgot! If you have a single drive of this and your motherboard has an intel chipset, remember to put the AHCI mode so you get the best performance out of it!
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Size: 512 GB Verified Purchase
Length: 0:49 Mins
HI ... on my Dell Optiplex 9020 SFF (i7-4770 3.4GHz) machine I have an ADATA XPG SX900 512 GB SATA III 6 GB/sec SandForce 2.5 Inch SSD (ASX900S3-512GM-C) installed as Drive C:. I cloned my original hard disk with Windows 7 Pro 64-Bit SP1 on to the SSD using Acronis TrueImage 2014.

My read/write times (especially my write times) as measured by the 2 benchmark test shown below are somewhat confusing!!!

CrystalDiskMark: 512K : Read 385MB/s : Write 168MB/s
ATTO Benchmark: 512K : Read 515MB/s : Write 412MB/s

CrystalDiskMark benchmark shows much lower write times than the Atto benchmark --- Hmmm???

Thanks ... Charles

Update 5/18/2014

Seems that when I cloned from Hard Disk to the SSD, the process did not set the SSD Partition Alignment properly : this seems to be a common problem cloning from a HD to a new SSD but is never a problem when doing a Clean Install onto an SSD.

I used these steps (see link below) to check and to fix the SSD Partition Alignment and now my CrystalDiskMark write results are greatly improved:

CrystalDiskMark: 512K : Read 394MB/s : Write 335MB/s
ATTO Benchmark: 512K : Read 530MB/s : Write 451MB/s

Check out the LINK below --- it is really educational!!!

LINK - [...]
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Size: 512 GB Verified Purchase
Installed in an early-2011 MacBook Pro 15", replacing the stock 500gb 7200rpm drive. Installation was a breeze (with the right screwdrivers, Phillips 000 and T6).

Running 10.8.5, my cold boot time went from 2min45sec to 0min45sec. After resetting the SMC for the computer (quick keyboard combo at reboot), the cold boot time dropped from 0min45sec to 0min22sec.

Feels like I have a brand new computer.
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Size: 256 GB Verified Purchase
This is a great drive. I replaced it on 2 of my 2 MacBook Pro laptops and they are running incredibly fast. Downloaded a hard drive speed test app and it was running at full Sata II spec. Yes, i know the drive is SATA 3 but my Mac has SATA II bus.
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Size: 256 GB Verified Purchase
amaaaaazing.
the laptop is blazing fast now.
it's a must upgrade to all laptops, once you tried it once, you're never going back to regular drives.
read speed 240MB/s, write 427MB/s on mac book pro i7, 2.9GHz & 8GB ram.
hope it helps.
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Size: 128 GB Verified Purchase
Cut my boot time in half, along with everything else. Judicial placement of key files, assuming you also have a legacy hard drive installed, and moving Windows core to RAM, makes for a very enjoyable computing experience.
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