Panasonic VIERA GT20 vs Panasonic VIERA ZT65

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VIERA GT20 compared with VIERA ZT65

	PanasonicVIERA GT20	PanasonicVIERA ZT65
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.	Panasonic's UK TX-P60ZT65B energy fiche confirms 60-inch Full HD. The marketed 3000 Hz Focused Field Drive is sub-field operation, not a published native image refresh rate.
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.	Studio Master Panel with Ultimate Black filter, THX certification, 1080p Pure Direct and Intelligent Frame Creation. The advertised 3000 Hz Focused Field Drive is not native refresh.
Picture modes
Picture modes	–	THX, EBU and Professional calibration modes with ten-point white balance and colour management on the reviewed UK set.
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.	AVForums found strong 1080p24 and broadcast motion and only rare false contouring or image retention. What Hi-Fi? also praised fast-motion stability.
Sizes
Sizes
Sizes	42″	60″
Largest size
Largest size	42″	60″ (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; HDMI2 supports ordinary Audio Return Channel. SCART and component/composite connections use supplied adaptors.
Input lag
Input lag	–	AVForums measured 42 ms in Game mode and about 63–65 ms without it on its UK TX-P60ZT65B sample.
Smart TV and sound
Smart TV platform
Smart TV platform	VIERA CAST	my Home Screen
Processor
Processor	–	Hexa Processing Engine, identified in AVForums' exact UK review
Speakers
Speakers	20 W	20 W
Wi-Fi
Wi-Fi	Optional wireless LAN adaptor	Built-in wireless LAN
Bluetooth
Bluetooth	–	Bluetooth 3.0 for accessories
Speaker detail
Speaker detail	Two 120 × 35 mm speakers, 10 W each, 20 W total.	Panasonic's UK manual specifies two speakers and one 75 mm woofer, rated 5 W + 5 W + 10 W.
Audio features
Audio features	Optical PCM and Dolby Digital output, analogue stereo output and a 3.5 mm headphone socket.	Bluetooth accessories, 3.5 mm headphone socket and VIERA Touch Pad Controller with voice input.
Casting
Casting	VIERA CAST service portal and DLNA home-network playback; launch-era apps may no longer operate.	My Home Screen, VIERA Connect applications, DLNA and Swipe & Share 2.0 media transfer.
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 Freeview HD terrestrial and Freesat HD satellite tuners; the UK model is TX-P60ZT65B, whereas ZT60 is used for other regions.
USB
USB	Two USB 2.0 ports and SD card slot; USB HDD recording and media playback.	Three USB inputs and an SD card slot for media and USB recording.
Ethernet
Ethernet	RJ45 10BASE-T/100BASE-TX for VIERA CAST and DLNA network media.	Wired network port for My Home Screen and DLNA services.
Optical audio out
Optical audio out	Fibre-optic digital audio output.	Digital optical audio output.
Design and power
Size
Size	Without pedestal: 1029 × 654 × 82 mm, 20.5 kg.	Panasonic UK manual: TV only 1404 × 828 × 47 mm, 36.5 kg; with pedestal 1404 × 921 × 308 mm, 44 kg.
Stand
Stand	Included pedestal: 1029 × 693 × 308 mm, 23.5 kg with pedestal.	Supplied metal pedestal; UK manual gives 500 × 300 mm wall-mounting holes.
Power use
Power use	Rated 335 W; standby 0.40 W or 32 W with monitor-out recording.	Panasonic fiche: 286 W average on mode, 530 W rated, 0.30 W standby and 0.25 W off.
Energy class
Energy class	–	C under the original Panasonic product fiche.
Colours
Colours	–	Black glass front with silver trim and metal pedestal.
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.	Main remote, VIERA Touch Pad Controller, pedestal, two pairs of Bluetooth 3D glasses, Electronic Touch Pen, SCART and component/video adaptors, mains lead and cable ties. Exact UK first-sale month is unverified, so release uses year precision.