Here's the specs of the 2 monitors from Asus's website.
The VS has no speakers, has full HD 1080P, brightness(max): 250 cd/㎡, ASUS Smart Contrast Ratio (ASCR) : 50000000:1; misprint, too many zeroes???
The VH has speakers, brightness(max): 300 cd/㎡, Contrast Ratio (Max.): 20000 :1 (ASCR)
They are also different in physical appearance.
VS238H-P http://www.newegg.com/Product/Product.aspx?Item=N82E16824236175
Cheaper from Amazon:
http://www.amazon.com/Asus-VS238H-P-23-Inch-Full-HD-Monitor/dp/B005BZNEVQ
Panel Size : Wide Screen 23.0"(58.4cm) 16:9
True Resolution : 1920x1080
Full HD 1080P : Yes
Pixel Pitch : 0.2655mm
Brightness(Max) : 250 cd/㎡
ASUS Smart Contrast Ratio (ASCR) : 50000000:1
Viewing Angle (CR≧10) : 170°(H)/160°(V)
Response Time : 2ms (Gray to Gray)
Display Colors : 16.7M
Video Feature SPLENDID Video Intelligence Technology
SPLENDID Video Preset Modes : 6 Modes
Skin-Tone Selection : 3 Modes
Color Temperature Selection : 4 Modes
HDCP support
Convenient Hotkey SPLENDID Video Preset Mode Selection
Auto. Adjustment
Brightness Adjustment
Contrast Adjustment
Input Selection
I/O Ports Signal Input : HDMI , D-Sub, DVI-D
Signal Frequency Analog Signal Frequency : 30~80 KHz(H)/ 55~75 Hz(V)
Digital Signal Frequency : 30~80 KHz(H)/ 55~75 Hz(V)
Power Consumption Power On Mode:<27W
Power Savinf Mode: <0.5W
Power Off Mode: <0.5W
Mechanical Design Chassis Colors : Black
Tilt : +20°~-5°
VESA Wall Mounting : 100x100mm
Security Kensington lock
Dimensions Phys. Dimension with Stand(WxHxD): 552x400.3x200mm
Box Dimension (WxHxD):608x 460 x130 mm
Weight Net Weight (Esti.): 3.4kg
Gross Weight (Esti.):5.8kg
Accessories DVI cable
VGA cable
Power cord
Quick start guide
Warranty Card
Regulation Approval EPEAT Gold Certified, Energy Star , UL/cUL, CB, CE, ErP, FCC, CCC, BSMI, Gost-R, C-Tick, VCCI, PSB, EK, J-MOSS, RoHS, WEEE, Windows Vista and Windows 7 WHQL
VH236H http://www.newegg.com/Product/Product.aspx?Item=N82E16824236059
Cheaper from Amazon:
http://www.amazon.com/ASUS-VH236H-23-Inch-Full-HD-Monitor/dp/B002453K5G
Panel Size: 23 Wide Screen
True Resolution: 1920X1080
Pixel Pitch: 0.266mm
Brightness(Max): 300 cd/㎡
Contrast Ratio (Max.): 20000 :1 (ASCR)
Display Color: 16.7M
Viewing Angle (CR≧10): 160°(H)/160°(V)
Response Time: 2 ms (Gray-to-Gray)
Video Features Trace Free Technology
SPLENDID Video Intelligence Technology
SPLENDID Video Preset Modes (5 modes)
Skin-Tone Selection (3 mode)
HDCP support
Color Temperature Selection(5 modes)
Audio Features Stereo Speakers 2Wx2 stereo RMS
Convenient Hotkey SPLENDID Video Preset Mode Selection
Auto. Adjustment
Brightness Adjustment
Volume Adjustment
Input Selection
Input / Output PC Input: DVI-D/D-Sub
PC Audio Input: 3.5mm Mini-jack
Video Input: HDMI
AV Audio Input: HDMI
Audio Output: SPDIF
Earphone jack: 3.5mm Mini-jack
Signal Frequency Analog Signal Frequency: 30~83 KHz(H)/ 50~75 Hz(V)
Digital Signal Frequency: 30~83 KHz(H)/ 50~75 Hz(V)
Power Consumption Power Consumption < 55 W
Power Saving Mode < 1 W
Mechanical Design Chassis Colors: Black
Tilt: +20°~ -5°
VESA Wall Mounting: 100x100mm
Security Kensington lock
Dimension (WxHxD mm) Phys.Dimension(WxHxD): 549x350x220mm
Box Dimension(WxHxD): 623x478x171mm
Weight Net Weight (Esti.): 5.5 kg
Gross Weight (Esti.): 7.3 kg
Accessory DVI cable
VGA cable
Audio cable
Power cord
Quick start guide
warranty card
Regulation Approval UL/cUL, CB, CE, FCC, CCC, BSMI, Gost-R, C-Tick, VCCI, PSB, J-MOSS, RoHS, WEEE, WHQL
My son is a big gamer. I got him the Asus VS247H-P monitor for Christmas. So far, for gaming, he's very pleased with it; and it's cheaper than the 23" models.
VS247H-P http://www.amazon.com/Asus-VS247H-P-24-Inch-Full-HD-Monitor/dp/B005BZNDS0
Panel Size : Wide Screen 23.6"(59.9cm) 16:9
True Resolution : 1920x1080
Full HD 1080P : Yes (support 1080i/p by 1:1)
Pixel Pitch : 0.272mm
Brightness(Max) : 300 cd/㎡
ASUS Smart Contrast Ratio (ASCR) : 50000000:1
Viewing Angle (CR≧10) : 170°(H)/160°(V)
Response Time : 2ms (Gray to Gray)
Display Colors : 16.7M
Video Feature SPLENDID Video Intelligence Technology
SPLENDID Video Preset Modes : 6 Modes
Skin-Tone Selection : 3 Modes
Color Temperature Selection : 4 Modes
HDCP support
Convenient Hotkey SPLENDID Video Preset Mode Selection
Auto. Adjustment
Brightness Adjustment
Contrast Adjustment
Input Selection
I/O Ports Signal Input : HDMI , D-Sub, DVI-D
Signal Frequency Analog Signal Frequency : 30~80 KHz(H)/ 55~75 Hz(V)
Digital Signal Frequency : 30~80 KHz(H)/ 55~75 Hz(V)
Power Consumption Power ON: < 33W
Power Saving Mode : < 0.5W
Power Off Mode : < 0.5W
Mechanical Design Chassis Colors : Black
Tilt : +20°~-5°
VESA Wall Mounting : 100x100mm
Security Kensington lock
Dimensions Phys. Dimension with Stand(WxHxD) :561.8x410.6x200mm
Box Dimension (WxHxD) : 618x 469 x130 mm
Weight Net Weight (Esti.): 4.4 kg
Gross Weight (Esti.):6.8 kg
Accessories DVI cable
VGA cable
Power cord
Quick start guide
Warranty Card
Regulation Approval EPEAT Gold Certified, Energy Star , UL/cUL, CB, CE, ErP, FCC, CCC, BSMI, Gost-R, C-Tick, VCCI, PSB, EK, J-MOSS,RoHS, WEEE, Windows Vista and Windows 7 WHQL