SATA 6 Gb / s speed promises double the previous generation. How is the performance of first generation devices for this interface?
In using the computer certainly will not escape the use of storage media. Storage media such as hard disks, optical discs, and solid state drives. In the storage media connected with the motherboard, use an interface. Currently, there are two types of commonly used interfaces. The first is the IDE or often referred to as Parallel ATA, which is abbreviated as PATA. This interface uses a wide cable that uses 44 or 80 conductors. Storage media that use this interface can transfer data up to 100 MB / s.
SATA
The second interface is Serial ATA, or what we often call the acronym SATA. SATA is the further development of PATA. By using SATA, a storage medium for data transfer speeds up to 150 MB / s, through the PATA data transfer limit. Of course, this would enable producers to boost hard disk performance of their products. Unfortunately, until now there has been no hard disk which can transfer a data matching the SATA specification. However, an SSD can transfer data more quickly than those specifications. Therefore, this interface has named a second-generation SATA II.
SATA II also has a SATA 3 Gb / s to 3 Gbit / s, but now has changed its name to the SATA-IO. The second generation SATA features data transfer speeds twice that of first generation SATA, which is 300 MB / s. Why not 375 MB / s (1 bit = 8 bytes)? This is caused by the use of 20% of the bandwidth for the encoding scheme done on his bus. Is it only enhanced bandwidth? There are several functions that are added to the SATA 3 Gbit / s is, among the backward compatibility, hot plug and Native Command Queuing.
At this speed level, an SLC type SSD can reach speeds specification SATA 3 Gbit / s this. However, a group called the Open NAND Flash Interface Working Group has established a specification that can drive the data transfer of 500 MB / s. For this reason, the third generation of SATA launched.
SATA 6 Gb / s, SATA 6 Gbit / s, SATA revision 3.0, or often referred to as SATA 3 specifications have increased the speed of 300 MB / s to 600 MB / s. In addition to speed, feature-feature on SATA 3 Gbit / s is also improved, updated, and added that more optimal function and can meet the needs of fast data transfer in the future.
When testing motherboards comparison test at last edition, CHIP find some motherboards already support SATA 6 Gbit / s this. A hard disk SATA 6 Gbit / s is also coming to the CHIP test center, the Seagate Barracuda XT which has a capacity of 2 TB. Therefore, CHIP interested to know how much impact the transition from SATA 3 Gbit / s to 6 Gbit / s.
Testing hdtune
Seeing the performance of Barracuda XT, it's SATA 6 Gb / s can not be fully implemented on a hard disk. The resulting performance of this disk is roughly equal to the hard disk installed in slot SATA 3 Gb / s.
i / o-meter
I / O meter CHIP used primarily to measure how well a device can write and read data at random. Results indicated no different HDTune. Velocity at the same SATA II SATA 3.
File copy
CHIP uses two methods to copy files test, consists of copying a large file with 3 GB and to copy many files with a total capacity of 4 GB. The results obtained when installed on the SATA II and SATA 3 is no different.
In PCMark Vantage, just look a little different when the hard disk XT Seagate Barracuda SATA interface used with SATA 3 and 2. The performance difference is not too large. However, you are using Windows Media Center will benefit from the performance difference nearly 20 MB / s. Even so, until the time of this writing, the implementation of the SATA hard disk or 3 SATA 6 Gb / s deemed not optimal. This certainly will be different again when the hard disk that is already optimized or SSD with SATA interface will be launched 3.
Slot SATA 3 SATA 3 We have not implemented the main chipset.
3 SATA hard disk first. Seagate launched a product line of products on its hard disk. This time, the hard disk that was released by their relatively new type. This is because the hard disk using SATA 3 interface that has data transfer rates 600 MB / s. Hard disk Seagate Barracuda called XT. The first model came out and both came to CHIP Test Center is the model with the largest capacity right now, that is 2 TB. This hard disk and a hard disk with SATA interface in the world's first 3.
Seagate produces hard disk speed is 7200 RPM. In addition to compatibility with data transfer up to 600 MB / s, the hard disk is of course also supports first-generation SATA interface, the SATA 1 (150 MB / s) and SATA 2 (300MB / s). To optimize performance and reduce the bottleneck when transferring data, Seagate pair of cache memory 64 MB on your hard disk.
Performance offered by the Seagate Seagate Barracuda XT is faster than previous types of Barracuda and a few hard drives that have been there until now. Hard disk performance is capable of transferring data at a speed of reading 138 MB / s. Speed he wrote himself adrift only 4 MB / s, ie 134 MB / s. However, can not be denied that at this speed, SATA 3 interface is not optimal on this disk. When used on the SATA 2 interface, hard disk is running at roughly the same as when using the SATA interface 3.
Conclusion
If you do not have a SSD, built especially for third-generation SATA, its performance will not differ from the previous generation SATA. Therefore, SATA 6GB / s not suitable for use by home users who still use the hard disk. Hard disk SATA interface that uses 6 Gb / s was also able to run at speeds roughly the same when attached to a slot SATA 3 Gb / s. This is what makes SATA 6 Gb / s is not attractive for use in the present. However, the choice is in your hands. Do you need a slot SATA 6 Gb / s or not?
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