Panasonic VIERA AX902 vs Panasonic VIERA GT20

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VIERA AX902 compared with VIERA GT20

	PanasonicVIERA AX902	PanasonicVIERA GT20
Overview
Released
Released	2014	2010
Display
Panel
Panel	LED LCD	Plasma
Panel detail
Panel detail	Panasonic specifies an LED LCD panel with Local Dimming Ultra. AVForums identifies the reviewed 55-inch panel as IPS with full-array direct backlighting and 128 zones; that zone count is not claimed for the 65-inch size. Panasonic's 3000 Hz Backlight Scanning claim is not a native refresh rate.	UK TX-P42GT20B Full HD NeoPDP plasma with active-shutter 3D. The advertised 600 Hz subfield drive is not native refresh.
Resolution
Resolution	3840 × 2160 (4K) (better)	1920 × 1080 (Full HD)
HDR formats
HDR formats	None	None
Picture processing
Picture processing	Studio Master Drive, Local Dimming Ultra, Studio Master Colour, 4K Pure Direct and Intelligent Frame Creation Pro. The 55-inch zone count is reported by AVForums, not the UK manual.	Infinite Black filter with THX mode, ISF calibration controls and 2D-to-3D conversion.
Picture modes
Picture modes	Dynamic, Normal, Cinema, THX Cinema, THX Bright Room, True Cinema, Monitor, Custom, Professional 1 and Professional 2; BT.1886 gamma is available.	–
Motion handling
Motion handling	HDTVTest found clear motion with Intelligent Frame Creation enabled but mild 24p judder; AVForums preferred turning interpolation off for films.	Intelligent Frame Creation and 24p Smooth Film are processing modes. AVForums observed artefacts with 50 Hz material on its review unit.
Viewing angle
Viewing angle	The reviewed 55-inch IPS panel retained contrast and colour better off-axis than many contemporary VA LCDs according to HDTVTest.	–
Sizes
Sizes
Sizes	55, 65″	42″
Largest size
Largest size	65″ (better)	42″
Gaming
HDMI ports
HDMI ports	4 (0 HDMI 2.1 at 4K 120 Hz+)	4 (0 HDMI 2.1 at 4K 120 Hz+)
Variable refresh rate
Variable refresh rate	None	None
HDMI detail
HDMI detail	Four HDMI inputs support 4K and 3D; HDMI2 supports ordinary Audio Return Channel. The UK manual also lists DisplayPort for 4K, one SCART, component and composite inputs, CI+ and an SD card slot. HDTVTest confirmed full HDMI 2.0 bandwidth and HDCP 2.2 on the reviewed 55-inch unit.	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.
Input lag
Input lag	AVForums measured 90 ms in Game mode on the 55-inch set; HDTVTest measured 87 ms on its separate 55-inch sample.	–
Smart TV and sound
Smart TV platform
Smart TV platform	my Home Screen	VIERA CAST
Processor
Processor	Quad Core Pro5	–
Speakers
Speakers	18 W	20 W (better)
Wi-Fi
Wi-Fi	Built-in dual-band IEEE 802.11a/b/g/n	Optional wireless LAN adaptor
Bluetooth
Bluetooth	Bluetooth 3.0 for accessories	–
Speaker detail
Speaker detail	Panasonic specifies 4 W + 4 W stereo drivers and a 10 W woofer.	Two 120 × 35 mm speakers, 10 W each, 20 W total.
Audio features
Audio features	3.5 mm headphone socket and Bluetooth accessory support.	Optical PCM and Dolby Digital output, analogue stereo output and a 3.5 mm headphone socket.
Casting
Casting	Panasonic's my Home Screen platform supports network media, TV Anywhere, screen mirroring and streaming apps; service availability varies over time.	VIERA CAST service portal and DLNA home-network playback; launch-era apps may no longer operate.
TV tuners
TV tuners	UK DVB-S/S2 Freesat, DVB-T/T2 Freeview HD and PAL I analogue tuners; two satellite dish inputs.	UK DVB-T/T2 terrestrial and DVB-S/S2 satellite for Freeview HD and Freesat HD, plus PAL I analogue.
USB
USB	Two USB 2.0 ports and one USB 3.0 port support media and recording to a registered drive; SD card slot.	Two USB 2.0 ports and SD card slot; USB HDD recording and media playback.
Ethernet
Ethernet	RJ45 10/100/1000 Ethernet for network services and local sharing.	RJ45 10BASE-T/100BASE-TX for VIERA CAST and DLNA network media.
Optical audio out
Optical audio out	Fibre-optic PCM, Dolby Digital and DTS output.	Fibre-optic digital audio output.
Design and power
Size
Size	TV only: 55-inch 1238 × 741 × 59 mm and 26 kg; 65-inch 1457 × 864 × 60 mm and 35 kg. With pedestal: 55-inch 1238 × 740 × 283 mm and 40 kg; 65-inch 1457 × 863 × 356 mm and 52 kg.	Without pedestal: 1029 × 654 × 82 mm, 20.5 kg.
Stand
Stand	Supplied rear-weighted pedestal. Panasonic lists 400 × 400 mm wall mounting holes.	Included pedestal: 1029 × 693 × 308 mm, 23.5 kg with pedestal.
Power use
Power use	Panasonic product fiche on-mode average: 210 W for 55 inches and 229 W for 65 inches; 0.30 W standby and off mode for both.	Rated 335 W; standby 0.40 W or 32 W with monitor-out recording.
Energy class
Energy class	C for UK 55-inch and B for UK 65-inch under the historical Panasonic product fiche.	–
Colours
Colours	Black glass front with silver edge trim.	–
In the box
In the box	Standard and touchpad remotes, two pairs of passive 3D glasses, pedestal, mains lead and instructions. Panasonic's 2014 UK model list and manual confirm 55- and 65-inch AX902B sets; the distinct 85-inch TX-85X942B is excluded. Exact first-sale month remains unconfirmed; contemporary UK coverage places availability in November 2014.	Pedestal and remote. Contemporary UK reviews conflict on the number of bundled 3D glasses, so no quantity is asserted.