These are the specification of 2 completely different laptops:

VPCSB19GG/B-VAIO™ Notebook & Computer-S Series
VPCSB19GG/B-VAIO™ Notebook & Computer-S Series

Sony
Model : VPCSB19GG/B

VAIO S Series is the perfectly balanced mobile PC. It’s thin, light, and highly mobile, and extremely quick with SSD. It also provides long battery life that helps you go further and get more done. Every feature is designed for mobility. VAIO S Series is power in motion — see where it can take you.
  • Intel® Core™ i7-2620M Processor 2.70 GHz with Turbo Boost up to 3.40 GHz
  • Genuine Windows® 7 Professional 64-bit
  • 13.3 inch wide (WXGA: 1366x768) TFT colour display (VAIO Display Plus, LED backlight)
  • Performance Switch: Dynamic Hybrid Graphics System for STAMINA mode and SPEED mode
  • Lightweight and full-flat design: aluminium palm rest & magnesium body
  • SSD in RAID 0: (256 GB (128 GB x 2; Serial ATA)) for Quick Boot and quick operation

Alienware m14x Custom Gaming PC
Alienware m14x Custom Gaming PC


Alienware
Model: M14x

Mobile Domination

Own your opponents anywhere you please — bedroom, dorm room, coffee shop or friend’s house. The Alienware M14x helps you stay in the game everywhere you go[[http://www.dell.com/mc.ashx?id=technotes:anytime-anywhere-wireless-access&c=us&l=en&s=dhs&modalwidth=400&modalHeight=150&ovropac=0&modalscroll=yes&modaltarget=div&modaltype=tooltip&position=bottom&title=Important Details&flip=false&eventType=rollover&closeDelay=5000|5]].

Battle Longer, Battle Lighter: Starting at less than 7 lbs.[[http://www.dell.com/mc.ashx?id=technotes:NVIDIA-Optimus Intelligent&c=us&l=en&s=dhs&modalwidth=400&modalHeight=150&ovropac=0&modalscroll=yes&modaltarget=div&modaltype=tooltip&position=bottom&title=Important Details&flip=false&eventType=rollover&closeDelay=5000|6]], the M14x is designed to easily go with you anywhere and game anytime.

Intelligent Power: With NVIDIA® Optimus™ dynamic graphics technology, the M14x automatically adjusts power consumption. End result — up to 6 hours[[http://www.dell.com/mc.ashx?id=technotes:NVIDIA-Optimus Intelligent&c=us&l=en&s=dhs&modalwidth=400&modalHeight=150&ovropac=0&modalscroll=yes&modaltarget=div&modaltype=tooltip&position=bottom&title=Important Details&flip=false&eventType=rollover&closeDelay=5000|6]] of battery life on a single charge.

Connect and Conquest: If you aren’t near a hotspot, you can still vanquish your enemies — anytime you want, virtually anywhere in the universe — with optional mobile broadband or WiMAX at up to 4G speeds[[http://www.dell.com/mc.ashx?id=technotes:anytime-anywhere-wireless-access&c=us&l=en&s=dhs&modalwidth=400&modalHeight=150&ovropac=0&modalscroll=yes&modaltarget=div&modaltype=tooltip&position=bottom&title=Important Details&flip=false&eventType=rollover&closeDelay=5000|5]].

Heroic Technology

Because failure isn’t an option, the Alienware M14x laptop delivers the cutting-edge technology you need to obliterate anyone or anything that stands in your way.
Alienware m14x with Powerful Graphics
Alienware m14x with Powerful Graphics
Alienware M14x Laptop (Overview)
Alienware M14x Laptop (Overview)
Revolutionary Graphics: With an optional HD+ (1600x900) white LED-backlit LCD display powered by cutting-edge NVIDIA® GeForce® graphics, you won't just see the headshot, you'll see the pink mist....
Alienware M14x Laptop (Overview)
Alienware M14x Laptop (Overview)
Out-of-this-World Processing Power: With optional Intel® Quad Core™ i7 CPUs featuring new Intel® "Huron River" architecture and Turbo Boost 2.0 technology, you’re equipped to beat any game on the market (and make it look easy).
Alienware M14x Laptop (Overview)
Alienware M14x Laptop (Overview)
Memory Master: With up to 8GB of 1600MHz DDR3 memory[[http://www.dell.com/mc.ashx?id=technotes:GB-system-memory&c=us&l=en&s=dhs&modalwidth=400&modalHeight=150&ovropac=0&modalscroll=yes&modaltarget=div&modaltype=tooltip&position=bottom&title=Important Details&flip=false&eventType=rollover&closeDelay=5000|7]], you'll be able to simultaneously power through multiple applications without the performance decreases you've experienced on lesser machines.