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  • Transcend Information 256GB SATA III 6Gb/s 2.5-Inch Solid State Drive TS256GSSD340
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Transcend Information 256GB SATA III 6Gb/s 2.5-Inch Solid State Drive TS256GSSD340

92 customer reviews
| 5 answered questions

List Price: $99.30
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256 GB
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From $42.98
  • SATA III 6Gb/s Interface
  • DDR3 DRAM cache
  • TRIM Command support
  • Ultra-slim 7mm form factor
  • Supports S.M.A.R.T.
  • Intelligent Block Management and Wear Leveling
  • Built-in ECC protection for long data retention
  • Supports Native Command Queuing and Intelligent "Recycling" for advance free space management (Garbage Collection)
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Frequently Bought Together

Transcend Information 256GB SATA III 6Gb/s 2.5-Inch Solid State Drive TS256GSSD340 + SABRENT 2.5 to 3.5 Inches Internal Hard Disk Drive Mounting Kit (BK-HDDH) + Monoprice 18-Inch SATA III 6.0 Gbps Cable with Locking Latch and 90-Degree Plug - Blue
Price for all three: $108.18

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Capacity: 256 GB
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This item: Transcend Information 256GB SATA III 6Gb/s 2.5-Inch Solid State Drive TS256GSSD340
Customer Rating (92) (3755) (2654) (243)
Price $ 96.64 $ 104.00 $ 150.49 $ 79.99
Shipping FREE Shipping FREE Shipping $ 5.02 FREE Shipping
Sold By Limited Goods Amazon.com Mattscomputers Silicon Power USA - Deal Site
Hard Disk Size 256 GB 250 GB 256 GB 240 GB
Data Transfer Rate 6 6 6 6
Hardware Interface sata 3 0 gb sata 3 0 gb sata 3 0 gb sata 3 0 gb
Optical Storage Read Speed 520 540 550 550
Optical Storage Write Speed 290 520 500 500
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Product Description

Capacity: 256 GB

Transcend SSD340
Transcend SSD340

Transcend SATA III SSD340

Fast Performance for All Your Computing Needs

Aimed at users looking to upgrade to the superior performance of solid-state technology at a competitive price, Transcend’s SSD340 with SATA III 6 GB/s technology makes sluggish computer boot-up and program launches a problem of the past. Boasting impressive transfer rates and excellent reliability, the SSD340 allows computer enthusiasts and gamers to take their system to the next level.

The SSD340 is ideal for users who use their computer primarily for everyday applications like internet browsing, basic computing, playing music or watching films. To fulfill the diverse needs to different users, the SSD340 is compatible with Windows, Mac and Linux based systems. The 256 GB* SSD340 acts as the perfect system partition (for installing your operating system).

SSD technology offers other advantages over traditional spinning hard drives. Since there are no moving parts in the SSD340, it is highly shock and vibration resistant. Consequently, less power is consumed versus a traditional hard drive increasing the energy efficiency of your devices when used in concert with a SATA III SSD.

*1 GB = 1,000,000,000 bytes. Displayed in the OS as 0.93 GB becauase 1,000,000,000 Bytes/1024/1024/1024= 0.93 GB. Some capacity (1-3%) is inter alia reserved for firmware and is not available for use as available space.

Transcend SSD340
Rapid Data Transmission

Transcend’s SSD340 offers impressive transfer rates of up to 520 MB/s sequential read and up to 290 MB/s write speeds and up to 69,000 IOPS 4K random write speeds. Even large amounts of data can now be transferred in a matter of seconds.

Transcend SSD340
Supports DevSleep Mode

The SSD340 maximizes notebook battery life when not in use thanks to full support of SATA Device Sleep Mode (DevSleep). DevSleep ultra low power state conserves more battery power than current power saving features such as standby mode by shutting down the SATA interface completely. And with a remarkable response time of less than 20 milliseconds, you can start working on your computer again almost instantly.

Transcend SSD340
Improved Boot-Up and System Response Time

Transcend’s SSD720 optimizes your PC to reach top speeds and reduces system response time. Reboot your PC in just 24 seconds, reducing wait times by 60%. In comparison, to boot Windows 7 from a conventional hard drives takes about 82 seconds. When using the SSD720, files and programs, even memory-intensive applications like graphics programs, open in merely a few seconds.

Transcend SSD340
Performance Upgrade

Transcend's SSD340 is built using high-quality synchronous multi-level cell (MLC) NAND flash memory for enduring performance and features the next-generation SATA III 6Gb/s interface, DDR3 DRAM cache, and a powerful controller. As a result, the SSD340 makes everyday computing tasks, such as booting up your computer, launching applications, and transferring data, quicker than ever before.

Transcend SSD340
Exceptionally Slim

To meet the size requirements of new generation Ultrabooks, the SSD340 is 7 mm thick, compared to 9.5 mm thickness of other SSDs. Using an industry-standard 2.5” form factor and super-slim body, the SSD340 can be easily installed into any device.

Advantages of Solid State Technology vs. Traditional HDD

Transcend SSD340

Shock Resistant

Unlike traditional hard drives, SSDs are manufactured with reliable NAND flash memory. As SSDs contain no moving parts, they are more resilient to mechanical failures that can result from vibration, shock or heat.

Transcend SSD340

Notably Silent

Operation of an SSD is remarkably silent as there are no moving or rotating parts.

Transcend SSD340


Traditional HDDs can considerably heat up during operation. A SSD, however, remains cool. Due to reduced heat development, annoying buzzing sounds originating from the SSD are rare.

Transcend SSD340

Energy Efficiency

SSDs are extremely energy efficient compared to a HDD. Save energy, money and the environment.

Transcend SSD340

Extended Battery Life

When used in a portable device, the SSD’s positive attributes like an increased battery life and light weight become particularly apparent.

SSD Scope Software

Key features of the SSD Scope Software include:

Transcend SSD340

Free Download

From Transcend’s website, you can download the SSD Scope software for your SSD340 free of charge. The software allows you to optimize your SSD’s performance by enabling firmware updates, counteracts wear and provides preventative maintenance.

Transcend SSD340

S.M.A.R.T Function

S.M.A.R.T. is a tool to monitor and analyze the health of the SSD. The S.M.A.R.T. functions relay information such as temperature and erase count to detect possible errors or failures before they occur.

Transcend SSD340

TRIM Command

For Windows 7, TRIM command releases allocated memory by deleting unnecessary data. By communicating with the operating system, TRIM automatically removes deleted data permanently, eliminating the need to secure erase all data on the drive. Consequently, the optimum write speed of your SSD is maintained, and the lifetime is maximized. For operating systems which do not support the TRIM command, SSD 340 will utilize its garbage collection to manage free space. In addition, wear-leveling and ECC error correction is integrated to ensure reliable data transfers.

Transcend SSD340

Secure Erase

Used as a method to combat performance degradation, Secure Erase guarantees the reliable, permanent removal of all data on the drive to continue peak performance over time. You can choose between “Quick Erase” (Quick Deletion) or “Full Erase” (Thorough Delete).

Transcend SSD340

System Clone

System Clone helps you transfer your over to the SSD340. This function easily and safely creates a clone of your existing hard drive then transfers it to your new SSD. Nothing else needs to be installed nor are there additional steps to be taken afterwards. Upgrading to a SSD is a breeze. Your same device is now lightning fast.

Transcend SSD340

Firmware Updates

To keep your SSD up-to-date, compare and download the latest firmware update from the SSD Scope menu. Completed in three easy steps, firmware updates allow you to take full advantage of all the SSD Scope functions. The latest firmware ensures your SSD is always at optimum performance and recommended for continued reliable operation.

Transcend SSD340
Mounting Kit Included for Desktop PCs

Included with the SSD340 is a 3.5" mounting kit, consisting of a bay adapter and eight mounting screws. Once attached to the chassis, you can use the 2.5" SSD340 in the standard 3.5" space.

Transcend SSD340
Compatible Operating Systems

Transcend SSD340 is compatible with all operating systems which support the AHCI mode and reaches maximum speed when using the SATA III 6GB/s interface.

SSD 340 is compatible with:

  • Windows 7 / Vista / XP
  • Linux Kernel from 2.6.39

Product Comparison

Comparison between Transcend SSD Series SSD720 SSD340 SSD320
Target Group High-end model for uncompromised performance Affordable model for everyday efficiency Affordable model for everyday efficiency
Particularly Suitable for the Following Applications Gaming, Multimedia Applications Office Software, Internet Browsing, Music Playback Office Software, Internet Browsing, Music Playback
Max Seq. R/W 550MB/s, 530MB/s 520MB/s, 290MB/s 540MB/s, 520MB/s
Max Random R/W 90000 IOPS, 43000 IOPS 69000 IOPS, 68000 IOPS 89000 IOPS, 33000 IOPS
Capacity 64GB / 128GB / 256GB / 512GB 64GB / 128GB / 256GB 64GB / 128GB / 256GB
Flash Type Toggle MLC (Synchronous) MLC (Synchronous) MLC (Asynchronous)
Controller SandForce SF2281 JMICRON JMF667H controller & DDR3 DRAM cache SandForce SF2281

Product Details

Capacity: 256 GB
  • Product Dimensions: 3.9 x 0.3 x 2.7 inches ; 1.8 ounces
  • Shipping Weight: 1.6 ounces (View shipping rates and policies)
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B00HF8A2SA
  • Item model number: TS256GSSD340
  • Average Customer Review: 4.6 out of 5 stars  See all reviews (92 customer reviews)
  • Amazon Best Sellers Rank:
  • Product Warranty: For warranty information about this product, please click here
  • Date first available at Amazon.com: January 15, 2014

Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

9 of 9 people found the following review helpful By Peter Brockie on January 29, 2014
Size: 256 GB Verified Purchase
I picked this drive up during a Gold Box deal since I am looking to replace my 120 GB SandForce SSD from OWC (need that for another machine) and I figured I would give Transcend a shot. The 340 series are their midrange models which use a JMICRON JMF667H, the cheaper 320 series uses SandForce ones (presumably because it saves cost on a DDR RAM cache).

Under 128 KB random and sequential testing shows the read performance is about 30% below the write performance. At 128 KB to 4 MB the read performance jumps way ahead (double that of the write speed). The big sequential tests (20 MB -> 100 MB) show performance in the ball park of their claimed speed on my system. Approximately 500 MB/sec reads, 250 MB/sec writes. More than adequate for a boot drive. Sure Samsung Pro drives will crush it, but that's why you're buying a "pro" level drive.

Install was cake and it even comes with a nice painted metal 2.5" -> 3.5" adapter and of course, screws. No software is included, however, tuning software is available for Windows only from their site.

The drive works flawlessly under Mac OS 10.9 Mavericks on my Hackintosh. Transcend is nice enough to make Mac ISOs available for firmware updates on their older models (this one doesn't have any updates at all yet). It's pretty sad they only have the tuning software available for Windows - I haven't installed it yet, so I can't confirm if changes are made to the firmware and thus affect any OS or if they are driver based.

Earth to Transcend: Not all Mac OS users are hipsters sitting in Starbucks. We want configuration software too. :)
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3 of 3 people found the following review helpful By DS on February 16, 2014
Size: 256 GB Verified Purchase
easy install and no issues yet.
I recommend using EASUS TODO backup free (for home users) to migrate your drive to this. The program will resize the partitions automatically. I moved from a 1 TB drive pretty easily.

Con..sort of.
on the adapter tray I wish they would have put arrows or indicators on it for top and front. I screwed the drive onto it wrong the first time. But my pc has odd rails that detach and made it hard to figure out.
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2 of 2 people found the following review helpful By James Beswick VINE VOICE on May 14, 2014
Size: 128 GB Verified Purchase
My traditional laptop hard disk failed after 5 years (which seems to always happen) so I decided to make the leap to solid state now that the storage capacity is adequate. I use cloud storage for all my documents so really only need the HDD for the operating system and locally installed software which makes 128GB more than adequate. This unit installs very easily and I reinstalled Windows 7 for a clean start together with other essential software. I didn't encounter any issues at all with drivers on a 5-year old Dell and the process was simply a matter of removing screws on the casing and switching out the drives.

There are few major benefits to solid state especially for older computers. First, I noticed a substantial increase in the speed of everything from boot-up to application loading - some of this is probably due to the fresh OS install but this drive is fundamentally much faster than most standard hard disks manufactured a few years ago. Second, the battery life improved partly due to no moving components and partly due to the reduced fan usage since it doesn't produce any heat. Finally, in theory at least, it should be less prone to failure than a disc with moving parts - only time will tell but my older drives have been failing like clockwork at the 4-5 year level.

While you need some technical skills to install any hard disk, this unit is about as easy to manage as any I've worked with. If you're looking to upgrade an older machine, I'd highly recommend giving this a try.
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2 of 2 people found the following review helpful By Blaine K. Evans on April 16, 2014
Size: 128 GB Verified Purchase
I have an Toshiba Satellite from 2007 that has just kept on ticking. It shipped with Vista and was later upgraded to Windows 7. I keep a clean machine, have upgraded the RAM to maximum bus speed and capacity, replaced the stock 3-cell NiCad battery with a 6-cell Lithium Ion unit, and even recently replaced the entire case because after about four years of heavy use, pieces of plastic were falling off. I just recently finally bought myself a new Ultrabook, but decided to show the old laptop a little love by replacing the stock 120GB 5400rpm HDD with this featherweight bit of plastic. Now the already amazing battery life is even further improved, and because of the age, this moderately-sized SSD was actually a (minor) upgrade in storage capacity.

I've noticed a moderate improvement in boot time and read/write speeds for file actions. Probably would be more pronounced on a faster computer. The power consumption improvement has also been moderate. Overall, I am pleased with the product and feel that I got exactly what I paid for and expected.
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1 of 1 people found the following review helpful By Jake on December 6, 2014
Size: 128 GB Verified Purchase
I am definitely hooked on SSD's! Great performance increase over older HD's. In my notebook I don't need a huge amount of storage so these work fine. I DO use larger ones in my desktops and will NEVER go back!
I use the free downloadable "clone" software or Acronis to clone the old drive to the SSD. Seagate and Western Digital have the software available on their websites. (don't know about the other guys tho')
If you don't feel comfortable working inside your computer DON'T DO IT! Most computer stores can do this for you. Better to pay them than have to buy a new computer.
i DEFINITELY recommend these (and nearly any other SSD) !
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