WD Scorpio Black 750GB & Scorpio Blue 1TB

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WD Scorpio Black 750GB & Scorpio Blue 1TB

November 8, 2011 by Lawrence Lee

Product
Scorpio Black WD7500BPKT
750GB 2.5" HDD
Scorpio Blue WD10JPVT
1TB 2.5" HDD
Sample Supplier
Street Price
US$? US$?

The Scorpio Black 750GB and Scorpio Blue 1TB are the current flagship models of Western Digital's consumer 2.5" notebook hard drives. Like the desktop Caviar series, the Scorpios are differentiated by a color code, "Black" for high performance and "Blue" for mainstream; The electrically frugal "Green line" is absent however as low power consumption is always a consideration in notebook hard drive design to extend battery life. There's quite a large performance difference between the Caviar Black and Blue lines and this gap should be amplified in these smaller drives as the Scorpio Black has the added advantage of a higher spindle speed than the Blue (7200 RPM vs. 5400 RPM).



The WD Scorpio Blue 1TB (left) and Scorpio Black 750GB (right).

For their respective rotational speeds, both models offer the highest capacity available for a 2.5" drive. The Blue is a bit more impressive in this regard as WD managed to pack 1TB into a standard 9.5 mm thick casing. Only one other drive can boast that, the MQ01ABD from Toshiba; All previous 1TB laptop models required an extra platter pushing the height to 12.5 mm, making them incompatible with most notebooks. The Black isn't alone either as both Hitachi and Seagate have 750GB 7200 RPM models on the market. We reviewed the Seagate Momentus 750GB a few months ago and it turned out to be a well performing and quiet drive. From previous experience we suspect WD's candidate will be faster but won't be able to compete in acoustics.

Specifications: Scorpio Black 750GB & Scorpio Blue 1TB
Model Number WD7500BPKT WD10JPVT
Capacity 750 GB (750,156 MB) 1TB (1,000,204 MB)
Cache 16 MB 8 MB
Interface SATA 3 Gb/s SATA 3 Gb/s
Rotational Speed 7200 RPM 5400 RPM
Transfer rate (sustained) 160 MB/s 150 MB/s
Average Latency 4.2 ms 5.5 ms
Power: Idle / Seek 0.8 W / 1.75 W 0.59 W / 1.4 W
Acoustics: Idle / Seek 28 dBA / 28 dBA 22 dBA / 25 dBA
Drive Ready Time 4 seconds 4 seconds
Weight (+/- 10%) 0.115 kg 0.11 kg
Warranty 5 years (limited) 3 years (limited)

A specification rundown has the Scorpio Black boasting twice as much cache, a higher sustained transfer rate and lower latency while the Blue has the advantage in acoustics and power consumption. It should be noted that both drives use the (not really) new Advanced Format with 4K sector sizes so if you're still working with an aging Windows XP system, it's advisable to use WD's partition alignment tool when setting up the drive.



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