Hard Disk in any type of computer, be it laptop or a desktop, is the weakest link when it comes to the performance measures. You can get the fastest CPU to date (Core i7/Quad Cores), get fastest and maximum RAM (16Gigs), you can get the best graphics card in your computer but your hard drive would be a normal maximum at 7200 RPMs with 32MB of cache. This makes the hard disk a bottle neck in the performance of your PC, if not the crunching sounds that they make when reading or writing data.
Hard Drive
A hard drive is an essential part of your computer when it comes to performance measurement because no matter what you’re doing on your computer, it’s the hard drive that would be used the most. Read / Write and seek time of your files matters a lot whether in data compression, you’re playing a video game or doing extensive random data access. SSDs or Solid state disks can be the final piece to this bottleneck issue of PC hardware performance.
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SSDs are not just fast, they are lightening fast. With host transfer rates going above 400MB/second, which is insanely higher than a normal hard disk drive, not even a SCSI drive could match that. With that data rate, you will get a 10 to 13 second cold boot with your windows 7 or even less on any other operating system and your games will better and faster. Your files will run faster, upto 3 times faster than they’re running on a normal hard disk and with flash technology there are no spinning disks in side an SSD therefore they are more vibration durable and shock resistant than a normal hard drive. Not only that, a normal SSD (NAND Based) requires only 1/2 of the power of HDDs. This means that you’d have more battery life (almost 30 to 40 %) in your laptop, if you’re using a solid state drive.
Performance Testing
When it comes to performance testing of SSDs, it gets really complicated phenomenon. Unlike the benchmarks of graphic cards and / or processors, where you put them to test against certain applications in specific scenarios, you get your results. Those results would remain the same for lets say, 10 more trials. SSDs are new technology and just like any other emerging technology, they are getting upgrades on daily basis. In early stages, SSDs did work at lightening fast speeds but even in the lab tests, they showed a performance drop in transfer rates. From DRAM to NAND based flash memories and new SandForce controllers which are considered to be the fastest in town these days because of their lower Write Amplification (less than 1), SSDs are a relatively stable hardware now, than what it was in 2008.
SATA Interface
Latest solid state disk drives have upgraded their SATA interfaces. From 3Gbps (Giga bits per second) to 6Gbps, which means that if you’re going for the SSDs that support 6Gbps, you definitely need a motherboard that supports this data rate and SATA interface. Marvell’s 9174 and SandForce’s SF-2200 are latest in this business, both these chipsets support almost upto 500MB/sec of transfer rate which means that if you can use 2 SSDs in Raid 0 structure, you can achieve a data rate up to 1 GB per second. Pretty insane, isn’t it?
An alternative to these chipsets is the Intel’s own chipset. Its not as fast as Marvell or SandForce, mere 250MB/sec transfer rate but it sure helps intel to keep its prices lower than those two. All these chipsets use the NAND memory configuration which brings us to the duration period or longevity of these SSDs. A typical write /erase cycle of a NAND chip is said to be around 10k but the original case is even less than 3,000 cycles. This technical jargon means that since the SSDs are flash memory based storage devices, they require write and erase of data on their surface, unlike normal HDDs, data cannot be overwritten on SSDs. It is re-written. Resulting in the lower longevity of the solid state drives. But, even with that 3,000 figure, your SSD is bound to last for almost 3 to 5 years. Thanks to the TRIM command in Windows 7 and other operating systems, the wear leveling is not the same as it was back in 2008. Even a HDD is bound for a mechanical failure after this time.
That being said, the SSDs won’t die on you like a HDD because of their ability to tolerate vibration and shocks and they are the best option now, when it comes to choosing a storage disk drive. Here are a few drives and their benchmarks:
Intel 510 SSD 120GB
OCS REVODrive 120GB
Kingston V+ 128GB
Sequential Read/Write:
4K random read/write (IOPS) Performance:
Burst Speed Performance:
Intel is the cheapest of all when it comes to price, the OCZ are the fastest and most expensive as they use the latest SandForce chipset whereas the Crucial drives get the most user ratings around the internet. Now the choice is yours. Whatever SSD you go for, you’re bound for the best computing experience ever.
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