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Western Digital 150 GB Raptor X Serial ATA Hard Drive Review
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Western Digital 150 GB Raptor X Serial ATA Hard Drive

Western Digital may be marketing their Raptor family of high-speed hard drives as enterprise-class hard drives but they are also very popular with hardware enthusiasts who just cannot resist its 10,000 RPM spindle speed. Everything just seems a little faster when you use a drive that spins at such a high speed.

To cater to this exclusive group of enthusiasts, Western Digital introduced the Raptor X, a variant of the 150 GB Raptor hard drive that replaces the metal top plate with a clear perspex lens that allows you to see the drive mechanism. This is the ultimate in hard drive 1337ness.

Unlike "regular" Raptor hard drives, the Raptor X is only available with a capacity of 150 GB using two platters. Let's find out just how much faster this drive is compared to 7200 RPM hard drives!

For more details, read our Comprehensive Review!

To discuss about this review, head over to the forum thread!


• NA

Lowest PriceGrabber Price


Comprehensive Review


• WD1500AHFD

Formatted Capacity

• 150,039 MB

Guaranteed Sectors

• 293,046,768

Bytes Per Sector

• 512 bytes

Sectors Per Track

• NA


• NA


• 2 Platters

Read/Write Heads

• 4 Read/Write Heads

Recording Method

• NA


• 1 : 1

Spindle Speed

• 10,000 RPM

Cache Buffer


Internal Data Transfer Rate

• 84 MB/s (sustained)

Maximum I/O Transfer Rate

• 1.5 Gbits/s

Average Seek

• 4.6 ms (read)
• 5.2 ms (write)
• 0.3 ms (track to track read)
• 0.4 ms (track to track write)
• 10.2 ms (full stroke)

Average Latency

• 2.99 ms (nominal)

Drive Ready Time

• 7.0 seconds (average)
• 10.0 seconds (maximum)


• Serial ATA 1.5Gb/s

Supported SATA Data Transfer Mode

• 1.5 Gbits/s

SATA Hotplug Capability

• Yes

Maximum Height

• 26.1 mm
• 1.028 inches

Maximum Width

• 101.6 mm
• 4.000 inches

Maximum Length

• 147.0 mm
• 5.787 inches

Maximum Weight

• 822 g
• 1.81 lb

Power Requirements

• +12V DC ± 10 %
• +5V DC ± 5 %

Power Consumption

• 8.4 W (Read / Write)
• 7.9 W (Idle)
• 1.8 W (Standby)
• 1.8 W (Sleep)

Ambient Temperature

• 5 °C to 55 °C (Operating)
• -40 °C to 65 °C (Non-Operating)

Maximum Shock

• 65 G @ 2 ms (Read)
• 250 G @ 2 ms (Non-Operating)

Drive Acoustics

• 29 dBA average (Idle Mode)
• 36 dBA average (Seek Mode)

Maximum Operating Vibration

• Random : 10-300 Hz, (0.008 g2/Hz)
• Linear : 10-300 Hz, 3.0 G (0 to peak)

Maximum Non-Operating Vibration

• Low Frequency : 10-300 Hz, 0.195 inches (double amplitude)
• High Frequency : 300-500 Hz, 5.0 G (0 to peak)

Non-Recoverable Read Errors

• 1 error per 1015 bits read

Load/Unload Cycles

• 20,000 (minimum)


• 1,200,000 hours


• 5 Years Limited Warranty (OEM or Retail)


Our Review System

Tech ARP is committed to developing new ways to improve your experience with us. As part of our continuous efforts to improve the value of our reviews to you, we are implementing a multi-tier review system.

This review system is designed to allow you to quickly receive information on the latest hardware or software. This new system also allows you to quickly get the gist of the review without reading through it. This can be very useful, especially in situations where you need to make a quick purchase decision.

In this new system, we start with a Product Overview whenever a company sends us a press release about their latest product. We shift through extraneous PR-talk to create a straightforward summary of the product's features as well as specifications. This allows you to quickly find out all the pertinent details about the product, without reading through official press releases.

When we receive the product for review, we will quickly take photos of it and create a Pictorial Review. The purpose of a pictorial review is to allow you, the reader, to quickly examine the product visually. It may help you make better purchase decisions, especially if you cannot wait for the full review.

After thorough testing, we will post a Comprehensive Review of the product. This adds on to the pictorial review with comprehensive test results and our final conclusion on the product.

But no matter whether you are reading a Pictorial Review or a Comprehensive Review, you can always read the summary of the review as well as examine the product's specifications right on the first page. In all our new reviews, we will maintain the first page as a Product Overview page. If the product is listed in PriceGrabber, you can also check out the lowest price online.

We hope this new review system will make your experience a lot more enjoyable and informative!

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