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Seagate Momentus 5400  (Source: Seagate Technology)
Seagate's latest notebook offerings, 3 capacities with hybrid NAND flash technology, does not currently produce promised results

The first Seagate hybrid hard disk drives are now shipping but the reviews will disappoint. Seagate first announced the Momentus 5400 PSD line of hybrid 2.5-inch hard disk drives this past June promising a performance boost based on the hybrid design using NAND flash memory for use with the Windows Vista operating system.

The Momentus 5400 PSD line is shipping in capacities of 80 GB, 120 GB, and 160 GB of magnetic storage combined with 256 MB of flash. The manufacturer's specifications state a 44 MB/sec sustained stransfer rate and 8 MB of that oldschool cache. The average seek time is 12.5 ms with an average latency of 5.6 ms. Combined with Microsoft Windows Vista's ReadyDrive technology hybrid hard drives are supposed to improve system performance, hold increased reliability, and reduce power consumption and/or increase laptop battery life.

However, the first impressions of the first hybrid hard disk drives are leaving consumers with those familiar "empty promise" feelings. Is Seagate's product to blame?

Melissa Johnson, a product manager for Seagate, stated that the cause of the lack of performance improvements over the original flavor of the Momentus 5400 line was in the BIOS and operating system drivers.

Earlier this year, before any hybrid hard drives were available to the general public, Lenovo bloggers made bold claims that first generation hybrid hard drives would be a bust. So far, it seems those claims were true. We can only hope these issues are resolved or the entire idea of a hybrid hard disk drive may become another technology that never could.


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RE: Another hit on Vista...
By Master Kenobi (blog) on 10/8/2007 2:54:33 PM , Rating: 4
Hardly. Even with out it Vista is pushing ahead just fine. This is just a driver problem from the manufacturers. Using standard IDE drivers with Hybrid hard disks doesn't work out so well.


RE: Another hit on Vista...
By euclidean on 10/8/2007 4:10:07 PM , Rating: 1
No way, it's all Microsoft!!!.....

Generally speaking, almost all of the issues currently out with vista are either driver related, or people are trying to run the OS in 32bit on old technology. Move up in the world people and quit complaining...there were more probs with XP when it first came out than so far with Vista.

Also, to keep on topic, I bet the issue is mainly driver/bios...at least it seems like it anyways, and if it is driver related, then that's Seagate's fault....WD ftw.


RE: Another hit on Vista...
By leexgx on 10/8/2007 7:32:56 PM , Rating: 2
i guess you not seen reviews done on these type of hard disks 256mb does not cut it at all when the OS is heavy and bloted (it work wunders on XP tho 128mb boot the rest for other programs) the cache on the disk needs to be 1gb to start off from and 2gb if you want the hdd to stay not spinning for longer times as thats what haveing flash on the hard drive is for so the hard disk can stop spinning for longer and save power 256Mb or 1gb can not do that
with 2-4gb of flash on the disk that five you optons for hard disk power down more offen as well the Flash is Way faster access times then an hdd and the Flash can have faster data rates then the laptop disks more so when there is random access going on (0.2ms flash / 10-15ms hdd with an Masive impact on file read performace)

its more an problem with the hard drive Vista ReadyDrive cant work well at all with 256mb of flash its likey trying to run vista with 512mb of ram its to small to be usefull unless vista ReadyDrive uses it for Small files Only


RE: Another hit on Vista...
By Drexial on 10/9/2007 3:26:43 PM , Rating: 2
i don't even really see how this could be viewed as a disappointment. if you getting a system with 5400RPM HDD your not looking for a hard core system to begin with. so i feel the 20% increase in battery life is FAR more substantial an announcement than the lack of performance increases.


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