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Samsung QLED Q7F (2017) vs Samsung QLED Q9FN (2018)

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

SamsungQLED Q7F (2017)SamsungQLED Q9FN (2018)
Overview
Released20172018
Display
PanelLED LCDLED LCD
Panel detailFlat quantum-dot LED-backlit LCD. AVForums identifies its tested UK 55-inch panel as 10-bit VA with LEDs along the bottom edge; Samsung's UK size tables do not specify the LCD matrix or native refresh rate for the other sizes.Quantum-dot LED-backlit LCD with direct full-array local dimming. The UK maker tables do not publish native refresh or a dimming-zone count; AVForums counted just under 500 zones on its 65-inch unit.
Resolution3840 × 2160 (4K)3840 × 2160 (4K)
HDR formatsHDR10, HDR10+, HLGHDR10, HDR10+, HLG
HDR extrasSamsung's QHDR 1500 is a product label, not a measured 1500-nit result. Samsung confirmed HDR10+ on its 2017 UHD range through Prime Video in December 2017; the initial UK maker tables do not specify HDR formats or whether other sources gained HDR10+.Samsung's QHDR 2000 is a product label, not a measured 2000-nit result. AVForums measured 1,833 nits in Movie mode on a 10% window on its UK 65-inch test unit; this is not assigned to the other sizes. Dolby Vision is unsupported.
Screen finishMoth Eye anti-reflection treatment in each UK size table.Ultra Black Elite Moth Eye anti-reflection treatment in all three UK maker tables.
Colour rangeSamsung's March 2017 launch claimed 100% colour volume for the QLED family. AVForums measured 95% DCI-P3 xy on its exact UK 55-inch test; this is a reviewer measurement, not a maker specification for every size.Samsung's Q Color and billion colours appear in all three UK maker tables. AVForums measured 95% DCI-P3 xy on its 65-inch unit, short of Samsung's 100% colour-volume claim; that measurement is not assigned to other sizes.
Picture processingSamsung UK lists Auto Motion Plus, Supreme UHD Dimming, Q Viewing Angle and a 3100 Picture Quality Index. The index is a processing score, not the native panel refresh rate. Samsung Spain calls the 55-inch processor Q Engine, while the UK table says quad-core.Samsung's Q Engine, Q Contrast Elite, Supreme UHD Dimming, Auto Motion Plus and 3700 Picture Quality Index appear in each UK maker table. PQI is a processing score, not native refresh rate.
Picture modesFilm Mode and Auto Motion Plus in each UK maker table. What Hi-Fi? recommends reducing contrast enhancement and sharpening on its 55-inch test unit.Film Mode, Natural Mode, Auto Motion Plus and Contrast Enhancer in each UK maker table. AVForums found the 65-inch Movie mode accurate without extensive calibration.
Motion handlingAVForums identifies a 100 Hz native panel in its UK 55-inch test and finds motion mostly good; What Hi-Fi? finds no ideal processing setting. The UK maker tables do not publish native Hz for all four sizes, so the main refresh row is omitted.AVForums finds good 24p, 50p and 60p motion on its 65-inch test and suggests disabling the default Auto Motion Plus interpolation if the soap-opera effect is distracting. Samsung's UK tables do not state native Hz across sizes.
Viewing angleBoth independent UK 55-inch reviews find colour and black levels deteriorate away from the centre despite Samsung's Q Viewing Angle claim.Both independent 65-inch reviews note reduced contrast and colour off-axis compared with OLED despite Samsung's Q Viewing Angle feature.
Sizes
Sizes49, 55, 65, 75″55, 65, 75″
Largest size75″75″
Gaming
HDMI ports4 (0 HDMI 2.1 at 4K 120 Hz+)4 (0 HDMI 2.1 at 4K 120 Hz+)
Variable refresh rateNoneNone
HDMI detailFour HDMI 2.0b inputs on the reviewed UK 55-inch One Connect box, accepting up to 4K 60p with HDR10/HLG and HDCP 2.2 (AVForums). Samsung's separate UK maker tables list four HDMI inputs and ARC on every size; no 4K 120 Hz or eARC capability is claimed.Four HDMI 2.0 inputs on the 65-inch review unit accept up to 4K 60p, HDR10, HDR10+ and HLG (AVForums). Samsung's UK maker tables list four HDMI ports and ARC for every size. No 4K 120 Hz or eARC capability is claimed.
Input lag23.8 ms (What Hi-Fi?) and 17.4 ms (AVForums) measured in Game Mode on separate exact UK 55-inch units; review measurements differ and are not assigned to other sizes.AVForums measured 21 ms at 1080p and 4K SDR and 22 ms at HDR on its UK 65-inch unit in Game Mode; about 80 ms without it. These are reviewer measurements for that size.
Game featuresManual Game Mode in the UK maker tables. The 55-inch AVForums test found motion interpolation raised input lag to about 79 ms, compared with 17.4 ms in plain Game Mode.Samsung's UK maker tables list Auto Game mode and Game Motion Plus. AVForums confirmed automatic Game Mode detection with a PS4 Pro on its 65-inch unit. At review time, VRR was planned in a firmware update, not yet available; VRR is therefore not listed as a confirmed feature here.
Smart TV and sound
Smart TV platformTizenTizen
ProcessorQuad-coreQ Engine
Speakers40 W60 W, 4.2 channels
Wi-FiWi-FiWi-Fi
Bluetooth–Bluetooth audio and Bluetooth Low Energy
Speaker detailSamsung's separate UK maker tables specify 40 W across all four sizes, with 2.2 channels at 49 inches and 4.2 at 55, 65 and 75 inches. AVForums describes its exact 55-inch review unit as 2.2 channels; the disputed 55-inch channel figure is omitted from the main specification.Samsung's separate UK maker tables specify 60 W, 4.2 channels and a woofer for all three sizes. AVForums found its 65-inch set adequate for ordinary TV but thin for films and sport.
Audio featuresDolby Digital Plus, DTS codec, woofer, Multiroom Link and Bluetooth audio in Samsung's UK maker tables. No Dolby Atmos or DTS:X claim is made.Dolby Digital Plus, Bluetooth audio and Multiroom Link in the UK maker tables. No Dolby Atmos or DTS:X claim is made.
Voice assistantsVoice interaction with UK English support in Samsung's 2017 UK maker tables; today's service availability may differ.Samsung voice interaction includes UK English in the 2018 maker tables; today's service availability may differ.
CastingSamsung Smart View, mobile mirroring, DLNA, Wi-Fi Direct and Bluetooth Low Energy in the UK maker tables.Mobile-to-TV and TV-to-mobile mirroring, DLNA and Wi-Fi Direct in the UK maker tables.
TV tunersTwin DVB-T2/C/S2 digital tuners, analogue tuner, CI+ 1.3, UK MHEG 5, programme guide, PVR and time shift in the UK maker tables.Twin DVB-T2/C/S2 digital tuners, analogue tuner, CI+ 1.4, UK MHEG 5, guide, PVR and time shift in the UK maker tables.
USBThree USB inputs on the One Connect box in the UK maker tables.Three USB inputs on the One Connect box in all three UK maker tables.
EthernetEthernet LAN built in.Ethernet LAN built in.
Optical audio outOne optical digital audio output.One optical digital audio output.
Design and power
SizeWithout stand, width × height × depth: 49-inch 1089.4 × 627 × 44.9 mm; 55-inch 1225.2 × 703.6 × 44.9 mm; 65-inch 1444.1 × 826.4 × 45 mm; 75-inch 1671.2 × 957.9 × 53.2 mm. Configuration weights exclude stand. Each size is from its own UK maker table.Without stand, width × height × depth: 55-inch 1231.2 × 707.1 × 38.9 mm; 65-inch 1450.1 × 830.4 × 38.9 mm; 75-inch 1675.8 × 961.9 × 39.4 mm. Configuration weights exclude stand. Each size is from its own UK maker table.
StandSterling Silver central metal tripod. With-stand weights from separate UK maker tables: 49-inch 18 kg; 55-inch 21.2 kg; 65-inch 29.8 kg; 75-inch 42.9 kg. One Connect has its own mains cable and joins the screen by a thin optical cable.Midnight Black T-Center stand. With-stand weights from the separate UK maker tables: 55-inch 23.2 kg; 65-inch 30.9 kg; 75-inch 46.3 kg. The One Connect box holds power and inputs and joins the screen by one cable.
Power useMaximum from separate UK maker tables: 49-inch 155 W; 55-inch 180 W; 65-inch 225 W; 75-inch 280 W.Maximum from separate UK maker tables: 55-inch 255 W; 65-inch 305 W; 75-inch 340 W.
Energy classOld energy labels: B at 49/55 inches and A at 65/75 inches. These are not today's A–G ratings.B in the old UK maker energy-label scale for all three sizes; not today's A–G scale.
ColoursSterling Silver front and metal stand in the UK maker tables.Midnight Black front in the UK maker tables.
In the boxThe UK maker tables name the TM1790A One Remote and TM1240A conventional remote for UK/IE, plus One Connect, power cable, user/e-manual and stand. A No Gap wall mount is optional.TM1890A Smart Control, power cable, manual and e-manual in the UK maker tables. The maker lists No Gap wall-mount support; the wall mount is optional.

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