Studio 1555 is Dell’s latest kid on the block of it’s Studio 15 line of notebooks.
Earlier Dell Studio 15s (1535 and 1537) had numerous grievances amongst the consumers like poor sound quality, below average graphic solution, problems with the touch sensitive media controls etc.
Dell has fixed most of these problems in the new Dell Studio 1555 series.

Stuff taken off the prior Studio 15 models (following features have been removed in the 1555)

• IR Receiver and remote control
• Wi-fi Catcher
• Touch Sensitive Media control buttons
• Fingerprint Reader
• Designs on the palmrest

Comparison of Studio 1555 and 1537

• Discrete Graphic Card: 256MB/512MB ATI Mobility Radeon HD 4570 vs 256MB ATI Mobility Radeon HD 3450
• LCD Display: 15.6 inch (16:9) vs 15.4 inch (16:10)
• Audio :  Intergrated audio + Subwoofer vs Integrated Audio
• Three USB 2.0 compliant 4-pin ports vs Four USB 2.0 compliant 4-pin ports
• New Colors and a unique Topo Black color vs Fewer colors
• 34 mm ExpressCard slot vs 54 mm ExpressCard slot
• Dimensions  : Width: 371.6mm vs 355.6mm and Height (back) : 38.9mm vs 33mm
• Depth: 252.9mm vs 261.5mm
• Weight: Starting weight of 5.54 lbs (2.515 kg) with 15.6″ HD TrueLife LED, 6-cell battery, integrated graphics and a DVD+RW drive vs Starting weight of 6.11 lbs. (2.77 kg) (15.4″ WXGA TrueLife display, 6 cell battery, DVD RW and Integrated graphics)