I've looked at 30 in from Gateway Dell and Samsung I'll list exact models later.
Brand Gateway
Model XHD3000
Cabinet Color Black
Display
Screen Size 30"
Widescreen Yes
Maximum Resolution 2560 x 1600
Recommended Resolution 2560 x 1600
Viewing Angle 178°(H) / 178°(V)
Pixel Pitch 0.251mm
Display Colors 16.7 Million
Brightness 400 cd/m2
Contrast Ratio 1000:1
Response Time 6ms(GTG)
Horizontal Refresh Rate 74 kHz
Vertical Refresh Rate 60 Hz
Panel Active Matrix, TFT LCD
Connectivity
Input Video Compatibility Analog RGB, Digital
Connectors HDMI, D-Sub, DVI-D, Component, Composite, S-Video
D-Sub 1
DVI 1
Video S-Video, Composite, Component
HDMI 1
USB 2.0 6
Power
Power Supply 100 - 240 VAC, 50/60Hz
Power Consumption Normal: 168W
Convenience
User Controls Power on/off button, EzTouch on-screen display (OSD) menu, Touch-sensitive control
Regulatory Approvals UL, cUL, FCC Class B, CE, PSE, NOM, VCCI
Stand Adjustments Swivel & Tilt
Built in TV Tuner No
Built in Speakers Full length Premium Speaker bar
HDCP Support No
Features Compatible with VESA (4x100mm) mounting solutions
Kensington Lock Slot
Extreme HD 1600p up conversion
HQV by Teranex video processing
Universal video inputs
HD Picture-in-Picture
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Samsung Syncmaster 305T
Mfg Part No: 305T
UPC Code: 729507700151
30.0 inch, Native Resolution 2560 x 1600, Brightness 400 cd/m2, Contrast Ratio 1000:1, Digital - DVI, Response Time 6 ms
Designed for the commercial market, this 30" 305T SyncMaster monitor combines a widescreen design and high resolution that make it ideal for a variety of professional applications, including medical, engineering, control rooms, CAD, graphics and design, and desktop publishing. The monitor also features...Read More
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Dell - UltraSharp 30" Widescreen Flat-Panel LCD HD Monitor
1 year limitedProduct Height17.7" with standProduct Width22"Product Weight25 lbs.Product Depth7.9" with standMonitor TypeFlat-panel LCDScreen Size30"Viewable Screen Size30"Maximum Resolution2560 x 1600Aspect Ratio16:10Response Time12 msBrightness300 cd/m²Portrait and/or Landscape ViewableLandscapeContrast Ratio1000:1Dot Pitch0.2505mmFlat DisplayYesTV TunerNoCompatibilityPCVertical Frequency60HzHorizontal Frequency49.31-98.71kHzAntiglare CoatingNoOn-Screen Image ControlsYesSpeakers IncludedNoENERGY STAR QualifiedYesVGA InputNoDVI-D InputNoDVI-D with HDCP InputYesHDMI InputNo