This conclusion may change next year when Micron and other companies release the next generation of SSDs with sustained write speeds to match the read speeds (250MB/s) with higher capacity (128G - 160G). Though the X25-M is the clear overall performance winner, if you balance speed with price with capacity - and with prices as low as $79 (after rebates), the Hitachi 7K320 HDD provides much more bang for the buck than either SSD. One source reported, "Current non-Intel MLC drives have a fatal flaw in that random writes of any magnitude or size will quickly cause second-level pauses while the controller attempts to complete the I/O request." Anandtech discusses this on one of their articles.) (* There are multiple reports of "stutter" or hesitation on the part of certain SSDs during random writes. However, the Intel X25-M shows no stutter and shines on random writes per second as well as small random write transfer speed. It also blew the others away on the small random READs which gives it the advantage for booting, waking, and app launching.īoth SSDs were beaten by at least one of the HDDs on the large sustained WRITE tests.Īnd the OCZ SSD suffers from the reported "stutter*" on random writes. The Intel X25-M is "off the hook" when it comes to large sustained READ speed. The WD Scorpio dropped from 76MB/s to 42Mb/s. The Hitachi 7K320 we tested dropped from 75MB/s when empty to 44MB/s at 90% capacity. Conventional hard drives (HDDs) get significantly slower as the drive fills up. Both SSDs maintained their transfer speed no matter how full the drives became. The first two graphs above show what happens when each drive fills up. My guess is that it's a 3G version of the Bulk Data Encryption (BDE) model or offers some other feature like free-fall sensor.)īenchmarks used included digLloyd DiskTester and SpeedTools QuickBench. (Disk Utility reports the model number of our factory 7K320 as HTS723232L9SA62 but the Hitachi website does not list that model. Scorpio = Western Digital Scorpio Black 320GB 7200rpm 2.5" Hard Disk Drive (HDD) with SATA II interfaceħK320 = Hitachi Travelstar 7K320 320GB 7200rpm Hard Disk Drive (HDD) with SATA II interface OCZ128 = OCZ Core Series 128GB Solid State Drive (SSD) model OCZSSD2-1C128G with SATA II interface X25-M = Intel X25-M 80GB Solid State Drive (SSD)
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