IntroductionNotebooks and laptop PCs of late have become rivals to that of the desktop market. This holds true when you look at the specs of the new notebooks coming out. Processor power is hitting the 2.5 GHz mark, memory sizes are in excess of 1GB and mobile GPUs are comparable to that of the desktop as well. In fact, there are even some notebooks with SLI in them. With all these advancements there are still some parts lagging behind such as the audio side of things; and more importantly, storage solutions.Laptops have one great disadvantage when it comes to the desktop segment, they are restricted in size. Who wants to lug around a heavy laptop computer? Not I. Processors are getting smaller in size, but frequencies go up, power requirements go down and heat dissipation gets better; this gives you more processing power at less voltage. Memory modules are shrinking in physical size, but again the amount of memory per stick is increasing giving you even more power out of your PC. With the development of graphics technology getting better we start to see high-end graphics in tiny packages as well. The one thing that has its limitations is the storage. Hard disks while getting larger in storage size can only go to a certain point with magnetic recording. You can only shrink the magnetic strips to a certain size before you start to encounter cohesion problems with the platters. Speed is another factor, in order for you to increase the rotation speed of a HDD you need to increase the voltage to the motors, which is another problem as laptops have limited battery life; the more speed the HDD has, the more voltage it will draw off the battery. More voltage also presents other problems such as heat. When you place more voltage into a device it's traded off as heat. Again, laptops have limited space for cooling, so everything has to fit within a fine tolerance.Today we are testing out one of the newest HDDs to come out for the laptop market, Western Digital's Scorpio HDD with an amazing 250GB capacity, this being one of the largest 2.5" HDDs on the market.
Specifications of the WD Scorpio 250GBModel NumberWD2500BEVSInterfaceSerial ATA 1.0a ProtocolCapacity250GBCache Buffer Size8MB Platter Rotation Speed5,400RPMLatency4.20 AverageSeek Time12.0ms Read and Write
The Western Digital Scorpio looks just like any 2.5" laptop hard disk, there are no clear cases like the Raptor has, which being a laptop drive would be simply a mute point. The weight of the drive is slightly heavier to hold than our Seagate Momentus 5400.2 drive which is our current laptop test bed. While heavier it feels a lot stronger than the Seagate drive. The metal panels on the WD drive feel more solid in construction, whereas on the Seagate drive we are able to press in a bit on the metal.
The under-belly of the drive is quite neat. In fact there are no circuits, chip or components at all above the surface of the PCB. Western Digital has placed them all on the PCB between the drive casing, keeping things smooth and simple which is especially a good thing in a laptop that may need to have a case around the drive as we don't want short outs. The drive comes with a massive 8MB of cache memory, one of the largest caches available for the laptop market. While it can't beat the 32MB of the Deskstar 1TB drive, we aren't aiming at the super high-end here.
The interface for the Scorpio has moved form the 44-pin IDE interface we are accustomed to on the 2.5" drives to Serial ATA. Thanks to the smaller nature of Serial ATA data and power cables and the interface on the PCB itself, laptops can be designed with universal fit HDDs that don't need a cradle to install them into the system. The SATA data and power plugs can be incorporated into the motherboard PCB for a slot-in feel. It's simple, effective and eliminates the need for proprietary connectors.
Test System Setup and HD Tach
Test SystemProcessor: Intel Core 2 Quad QX6700 @ 3GHz (9x333MHz)Motherboard: GIGABYTE P35-DQ6 (Supplied by GIGABYTE)Memory: 2x 1GB DDR2-1186 Geil (Supplied by Geil)Graphics Card: MSI GeForce 8800GTS 640MB (Supplied by MSI) Cooling: Stock Intel CoolerOperating System: Microsoft Windows XP SP2Drivers: Intel INF 22.214.171.1249, Forceware 163.21Todays test system consists of a GIGABYTE P35 system that is normally used for our motherboard test bed, but we are going to be a bit different here. Our test drives comprise the Western Digital Scorpio 250GB, our Seagate Momentus 5400.3 160GB, the Hitachi Deskstar 7K1000 and our 500GB Seagate 7200.10 HDD. Since the Momentus HDD is an IDE drive we have decided to use an IDE to SATA converter so we can hook the IDE drive onto the ICH9R's SATA ports to make the review more fair. The SATA converter only supports 150MB/s 1.0a SATA specs so it's not going to increase any speeds on the drive as the Momentus only supports 100MB/s transfer rates. HD TachVersion and / or Patch Used: 126.96.36.199Developer Homepage:http://www.simplisoftware.comProduct Homepage:http://www.simplisoftware.com/Public/index.php?request=HdTach
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