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Top 10 Solid State Drives 2017

Solid-state storage is something we've come to expect in our smartphones and tablets, where its tiny and rugged form factor is essential. But with the capacity to read and write data at up to hundreds of times faster than traditional hard drives, it’s the speed of an SSD that makes it especially worth the upgrade on your laptop or PC.

WD Blue 1TB Internal SSD Solid State Drive - SATA 6Gb/s 2.5 Inch - WDS100T1B0ASamsung 850 EVO 500GB 2.5-Inch SATA III Internal SSD (MZ-75E500B/AM)Crucial MX300 525GB SATA 2.5 Inch Internal Solid State Drive - CT525MX300SSD1SanDisk SSD PLUS 240GB Solid State Drive (SDSSDA-240G-G26) [Newest Version]Samsung 850 PRO - 256GB - 2.5-Inch SATA III Internal SSD (MZ-7KE256BW)Toshiba OCZ VX500 Series 256GB 2.5Transcend 128GB MLC SATA III 6Gb/s 2.5PNY CS1311 120GB 2.5Kingston Digital 120GB SSDNow UV400 SATA 3 2.5ADATA SU800 512GB 3D-NAND 2.5 Inch SATA III High Speed Read & Write up to 560MB/s & 520MB/s Solid State Drive (ASU800SS-512GT-C)

Understanding How A Computer's Memory Works


In the most basic sense, a computer's memory has three parts: cache, the memory, and the hard disk. Each one of these parts performs a specific function.

The cache, which is the innermost memory unit, performs the calculations and procedures of your computer as it operates. It is a component of the high-speed static RAM, also known as SRAM. The majority of programs a computer users access the same data again and again, storing this data in the SRAM allows the computer to access this information as quickly as possible, without having to access the DRAM, which is slightly slower.

This makes a computer more efficient when running commonly used programs. The electrical pathways to the cache are shorter than the pathways to the memory or the hard disk, making data available nearly instantaneously.

The memory, most often referred to as RAM, is where a computer stores information that is related to processes and programs that are currently active. RAM storage is temporary and it is only stored while a computer is powered on. It helps a computer run memory-extensive programs more quickly by temporarily transferring that program's information from the hard disk to the RAM. RAM can achieve speeds exceeding 15,000mbps, making accessing information on it much faster than accessing memory on a standard hard drive, which can reach speeds somewhere in the area of 1,000mbps.

All other information on a computer is stored on the hard drive, including program data, files, images, settings, etc. In order to access this information, a computer must first load it from the hard drive to the RAM, which makes the process take longer. The cache and RAM operate in nanoseconds, while the hard drive operates in milliseconds.

With traditional hard disk drives, the computer has to wait for the hard drive to spin and its arm to locate the exact place on the disk to access the memory needed before it can be transferred to the RAM. A solid-state drive has no moving parts and can access the necessary data 10 times quicker than a spinning hard disk drive.

Why Solid State Drives Are Faster Than Hard Disk Drives


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Hard disk drives (HDD) store their data on a series of spinning magnetic disks. To access or add information onto one of these drives, an actuator arm has to move into position over the correct spot on the disk. It works in a very similar manner to a record player. This causes a significant wait time when accessing or writing data on a hard disk drive.

Not only must the computer wait for the disk to spin into the proper position, but sometimes data is stored in multiple locations, which takes, even more, time to access because the actuator has to move from place to place. If a drive is in sleep mode, it takes additional time for it to spin up to full speed. On average, it takes 10 to 15 milliseconds for a traditional hard disk drive to find data and begin accessing it.

Solid state drives (SSD) have no moving parts, hence the name solid state. Data on solid state drives is saved to a pool of NAND flash memory, which is comprised of floating gate transistors. These are different than the transistors in DRAM, which need to be refreshed multiple times per second and only store memory when powered on.

NAND flash memory is non-volatile and can store data whether it is powered on or not as it always retains its charged state. Because solid state drives have no moving parts, there is no lag time while a computer waits for the disk to spin and the actuator arm to locate the data on the disc. This allows a computer to work faster and access needed data quicker. An SSD is still slower than cache and DRAM but easily outpaces hard disk drives.

Drawbacks Of Solid State Drives


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Solid state drives are able to access data faster than hard disk drives, and when new can also write data faster, but overtime SSDs will slow down. This is because of the processes an SSD must perform before it can write to a drive. In an HDD, data can be written to any location, at any time, even if there is already data there. SSDs aren't able to overwrite data directly. They can only write data to empty page blocks. If there are no empty page blocks, the SSD must create one by deleting data before it can write new data.

SSDs read and write data at the page level, but can only erase data at the block level. This is because it requires too much voltage to erase data at the page level and it can stress the individual cells around the page cells being rewritten. For an SSD to write data onto a previously used page, it must copy all of a block's contents and save it to memory. Then it deletes the entire block and rewrites the entire block data along with the updated page.

This is why SSDs start off being able to write data much faster than HDDs, but over time slow in performance. New SSDs are filled with empty, or mostly empty pages, but as they are used the pages and blocks begin to get filled up. Luckily there are steps you can take to increase the lifespan of your SSD's top speeds.


#10.ADATA SU800 512GB 3D-NAND 2.5 Inch SATA III High Speed Read & Write up to 560MB/s & 520MB/s Solid State Drive (ASU800SS-512GT-C)


3D NAND Technology
ADATA SU800 is one of first internal 2.5-inch SSD using next-generation 3D NAND technology designed for consumer market. 3D NAND technology stacks memory cells vertically to increase the density significantly and overcome the density limitation issue found in previous-generation planar/2D NAND architecture. Higher cell density and efficient architectures improve write performance and reliability over previous-generation planar/2D NAND without increasing die size.


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#9.Kingston Digital 120GB SSDNow UV400 SATA 3 2.5" Solid State Drive SUV400S37/120G


Kingston’s SSDNow UV400 is powered by a four-channel Marvell controller for incredible speeds and higher performance compared to a mechanical hard drive. It dramatically improves the responsiveness of your existing system and is 10 times faster than a 7200RPM hard drive¹.

Rugged and more reliable and durable than a hard drive, UV400 is built using Flash memory so it’s shock- and vibration-resistant and less likely to fail than a mechanical hard drive. Its ruggedness makes it ideal for notebooks and other mobile computing devices.


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#8.PNY CS1311 120GB 2.5" SATA III Internal Solid State Drive (SSD) - (SSD7CS1311-120-RB)


The PNY CS1311 2.5-inch SATA-III (6 Gb/s) solid state drive (SSD) is the value performance line of PNY SSDs. It is an excellent choice for an entry-level upgrade from a hard disk drive (HDD). The PNY CS1311 was designed to be an easy and cost-effective HDD replacement for your existing PC system, helping to realize faster boot times, quicker application launch and better overall system performance.


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#7.Transcend 128GB MLC SATA III 6Gb/s 2.5" Solid State Drive 370 (TS128GSSD370S)


Transcend’s SSD370 SATA III SSD boasts incredibly fast transfer speeds, large capacities of up to 1TB, a compact and lightweight design, shock and vibration resistance, and supports DevSleep mode. That means you can enjoy a seamless, lag-free computing experience even when using your notebook on an extended journey.


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#6.Toshiba OCZ VX500 Series 256GB 2.5" SATA III Solid State Drive with MLC flash (VX500-25SAT3-256G)


Designed for mainstream desktops and notebooks, the Toshiba OCZ VX500 SATA SSDs provide a faster, more responsive computing, gaming and application experience compared to traditional hard disc drives (HDDs). prioritizing storage endurance, the Toshiba MLC NAND flash- based VX500 Series is suitable for users with write-intensive PC environments seeking well-balanced speed and features that will take system performance to the next level.


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#5.Samsung 850 PRO - 256GB - 2.5-Inch SATA III Internal SSD (MZ-7KE256BW)


The Samsung 850 PRO SSD redefines storage with the world’s first drive based on 3D VNAND flash, offering exceptional read/write performance, reliability and power management efficiency. The 850 Pro delivers up to 2x the speed, density, and endurance of conventional flash. The next leading SSD for performance, endurance, and energy efficiency.


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#4.SanDisk SSD PLUS 240GB Solid State Drive (SDSSDA-240G-G26) [Newest Version]


Boost the performance and extend the life of your laptop or desktop PC with the SanDisk SSD Plus. This durable solid state drive delivers sequential read speeds of up to 530MB/s (1) for up to 20X the speed of a typical hard disk drive (2). This means faster boot-ups, shutdowns, data transfers, and application response times than with a hard disk drive (2). Plus, it doesn’t overheat, make noise, or burn through a battery and is a shock- and vibration-resistant (3). You can also monitor the status of your favorite media applications using the SanDisk SSD Dashboard (4) that provides tools for monitoring and optimizing system performance.

SanDisk products are constructed to the highest standards and rigorously tested. You can be confident in the outstanding quality, performance, and reliability of every SanDisk product.


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#3.Crucial MX300 525GB SATA 2.5 Inch Internal Solid State Drive - CT525MX300SSD1


Increase the speed, durability, and efficiency of your system for years to come with the Crucial MX300 SSD. Boot up in seconds and fly through the most demanding applications with an SSD that uses the latest 3D NAND Flash technology with the proven success of previous MX-series SSDs. Your storage drive isn't just a container, it's the Engine that loads and saves everything you do and use. Get more out of your computer by boosting nearly every aspect of performance.


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#2.Samsung 850 EVO 500GB 2.5-Inch SATA III Internal SSD (MZ-75E500B/AM)


Upgrading your PC with a Samsung SSD is the most economical way to breathe new life into an aging PC. The 850 EVO reads, writes and multi-tasks at incredible speeds, enhancing boot-up speed, application loading, and multitasking performance. It's more than an upgrade, it's a complete transformation of your PC.


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#1.WD Blue 1TB Internal SSD Solid State Drive - SATA 6Gb/s 2.5 Inch - WDS100T1B0A


With superior performance and a leader in reliability, the WD Blue SSD offers digital storage that is optimized for multi-tasking and ready to keep up with your high-performance computing needs. Available in both 2.5"/7mm cased and M.2 2280 form factors and WD's Functional Integrity Testing Lab (FIT Lab), the WD Blue SSD is compatible with a wide range of computers, so you can be sure you are making the right choice. Combined with the free, downloadable WD SSD Dashboard and a 3-year limited warranty, you can confidently upgrade your system to the WD Blue SSD.


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