Panasonic VIERA GT20 vs Panasonic VIERA ST60

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VIERA GT20 compared with VIERA ST60

	PanasonicVIERA GT20	PanasonicVIERA ST60
Overview
Released
Released	2010	2013
Display
Panel
Panel	Plasma	Plasma
Panel detail
Panel detail	UK TX-P42GT20B Full HD NeoPDP plasma with active-shutter 3D. The advertised 600 Hz subfield drive is not native refresh.	UK ST60B exact maker manual lists 42, 50 and 55 inches. Full HD active-shutter 3D. Continental European and US 65-inch ST60 models are regional variants, not a verified UK configuration. Advertised 2500 Hz Focused Field Drive is a driving measure, not the native panel refresh rate; native Hz is omitted.
Resolution
Resolution	1920 × 1080 (Full HD)	1920 × 1080 (Full HD)
HDR formats
HDR formats	None	None
Picture processing
Picture processing	Infinite Black filter with THX mode, ISF calibration controls and 2D-to-3D conversion.	Infinite Black Pro panel and Intelligent Frame Creation described in exact ST60 reviews. The advertised 2500 Hz figure is Focused Field Drive, not native refresh.
Picture modes
Picture modes	–	Dynamic, Normal, Cinema, True Cinema and Custom in the exact UK42 review; 10-point white-balance/gamma and panel luminance controls.
Motion handling
Motion handling	Intelligent Frame Creation and 24p Smooth Film are processing modes. AVForums observed artefacts with 50 Hz material on its review unit.	Native panel Hz unpublished in the read UK manual and omitted. Input frequencies, FFD marketing and mains 50/60 Hz are not panel refresh. Exact reviews praise film motion but caution about 3D judder or gaming lag.
Sizes
Sizes
Sizes	42″	42, 50, 55″
Largest size
Largest size	42″	55″ (better)
Gaming
HDMI ports
HDMI ports	4 (0 HDMI 2.1 at 4K 120 Hz+)	3 (0 HDMI 2.1 at 4K 120 Hz+)
Variable refresh rate
Variable refresh rate	None	None
HDMI detail
HDMI detail	Four HDMI 1.4 inputs support 3D, Deep Colour and x.v.Colour; HDMI2 supports Audio Return Channel. Two SCART, component, composite and VGA inputs are also provided.	Three HDMI inputs with ARC on HDMI2; 3D, Content Type, Deep Colour, x.v.Colour and HDAVI Control 5. SCART/RGB and component/composite via adaptors.
Input lag
Input lag	–	66 ms in Game mode measured by Les Numériques on continental 50-inch ST60; HDTVTest reported 47 ms or more against a CRT on exact UK42, using a different method. These are review measurements, not maker claims.
Smart TV and sound
Smart TV platform
Smart TV platform	VIERA CAST	my Home Screen
Speakers
Speakers	20 W	20 W, 2.1 channels
Wi-Fi
Wi-Fi	Optional wireless LAN adaptor	Wi-Fi 4 (802.11n), built-in dual-band
Bluetooth
Bluetooth	–	3.0
Speaker detail
Speaker detail	Two 120 × 35 mm speakers, 10 W each, 20 W total.	Two speakers and one 75 mm woofer; 5 W + 5 W + 10 W, 20 W total.
Audio features
Audio features	Optical PCM and Dolby Digital output, analogue stereo output and a 3.5 mm headphone socket.	–
Casting
Casting	VIERA CAST service portal and DLNA home-network playback; launch-era apps may no longer operate.	my Home Screen personalised launcher, APPS List and VIERA Connect services; DLNA and VIERA Remote app described in exact reviews. Legacy services depend on provider support; original app availability is not a current promise.
TV tuners
TV tuners	UK DVB-T/T2 terrestrial and DVB-S/S2 satellite for Freeview HD and Freesat HD, plus PAL I analogue.	UK DVB-T/T2 Freeview HD, PAL I analogue and CI Plus. No satellite or Freesat tuner is listed in the UK ST60B manual.
USB
USB	Two USB 2.0 ports and SD card slot; USB HDD recording and media playback.	Two USB 2.0 inputs, SD card slot, media playback and USB-HDD recording.
Ethernet
Ethernet	RJ45 10BASE-T/100BASE-TX for VIERA CAST and DLNA network media.	RJ45 10BASE-T/100BASE-TX; built-in dual-band 802.11a/b/g/n wireless LAN.
Optical audio out
Optical audio out	Fibre-optic digital audio output.	Fibre-optic PCM/Dolby Digital/DTS output and 3.5 mm stereo headphone jack.
Design and power
Size
Size	Without pedestal: 1029 × 654 × 82 mm, 20.5 kg.	Without pedestal: 42-inch 994 × 596 × 49 mm, 17 kg; 50-inch 1170 × 697 × 49 mm, 22.5 kg; 55-inch 1286 × 762 × 49 mm, 27 kg. Configuration weights exclude pedestal.
Stand
Stand	Included pedestal: 1029 × 693 × 308 mm, 23.5 kg with pedestal.	Included pedestal. With pedestal: 42-inch 994 × 650 × 256 mm, 20 kg; 50-inch 1170 × 751 × 295 mm, 25.5 kg; 55-inch 1286 × 816 × 333 mm, 31 kg. Manual permits ±15° swivel on 42/50-inch only.
VESA pattern
VESA pattern	–	Maker mounting holes 400 × 300 mm on 42/50-inch, 500 × 300 mm on 55-inch; M8 screws.
Power use
Power use	Rated 335 W; standby 0.40 W or 32 W with monitor-out recording.	Original UK product fiche on-mode average 133/180/205 W for 42/50/55-inch; standby 0.30 W with no function active, off 0.27 W. Les Numériques and 01net measured higher 50-inch values under different test conditions; these are not the label average.
Energy class
Energy class	–	C under the original 2013 label scheme.
In the box
In the box	Pedestal and remote. Contemporary UK reviews conflict on the number of bundled 3D glasses, so no quantity is asserted.	Pedestal, N2QAYB000829 remote/two R6 batteries, one set of 3D eyewear, electronic Touch Pen/R03 battery, mains lead, SCART adaptor and cable accessories. Exact UK manual is separate from continental and US ST60 bundles. Panasonic Malaysia announced planned 18 April 2013 regional availability, while a French review sample existed 11 March; neither proves the first completed sale, so release uses 2013.