HP dv6t laptop core-i5 6GB memory $699

HP dv6t core-i5 6GB memory 640 GB hard drive - at costco

Deal of The Day
$699.99 after $100 OFF
HP dv6t Select Laptop
Core i5-450M 2.40GHz
Brushed Aluminum
SuperMulti 8x DVD±R/RW
5-in-1 Card Reader
5.50 lbs.

Processor & Memory:

Intel® Core™ i5-450M Processor at 2.40GHz
3MB L3 cache
6GB DDR3 SDRAM (2 DIMM)
Drives:

640GB (5,400RPM) SATA Hard Drive
SuperMulti 8x DVD±R/RW drive with Double Layer Support
Graphics & Video:

15.6" High Definition LED BrightView display; 1366 x 768 native resolution
Integrated Intel HD Graphics
Communications:

Wireless-N Mini-Card
Integrated 10/100/1000 Ethernet LAN

Audio:

Dolby™ Audio with Built-in Altec Lansing speakers
Keyboard:

HP color matching keyboard
Touch Pad with on/off and dedicated vertical scroll up/down pad
Personalization:

Color: Brushed aluminum in stream argento (metal)
Integrated webcam and fingerprint reader
Ports:

1x 5-in-1 Media Card Reader
4x USB 2.0 ports (one shared with eSATA port)
1x HDMI
1x VGA
1x RJ-45 (LAN)
Operating System:

Microsoft® Windows® 7 Home Premium (64-bit)

Additional Software:

Microsoft® Office Starter (reduced functionality versions of Word and Excel; not the full version of Microsoft® Office 2010)
Access the full Office 2010 experience when you purchase a Product Key Card. The Product Key Card is a single license card that contains a 25-character code to activate full-featured Office 2010 software on your new PC. To purchase Click Here
Norton Internet Security™ (60 day subscription)
Power Supply:

6-cell Lithium Ion Battery
90W AC Adapter
Additional Information:

Approximate Weight: 5.50 lbs.
Dimensions: 14.88” W x 9.65" D x 1.21"~1.37"

Why couldn't they put a 7200rpm HD on this?