LG 27GM950B-BUK manufacturer model · 27GM950B-B- Maximum refresh rate
- 165 HzThis one: 120 Hz
- Panel technology
- IPSThis one: IPS LCD with oxide TFT technology
MONITORS
Apple Studio Display XDR · Standard glass · Tilt- and height-adjustable stand
Standard glass · Tilt- and height-adjustable stand · Apple part MFEL4B/A
- Screen diagonal
- 27 in
- Native resolution
- 5120 × 2880
- Maximum refresh rate
- 120 Hz
Studio Display XDR is a 27-inch 5K IPS LCD display with a 2,304-zone mini-LED backlight, Adaptive Sync and a maximum 120 Hz refresh rate. This standard-glass UK configuration includes the tilt- and height-adjustable stand, 140 W host charging over Thunderbolt 5, a Center Stage camera and six speakers.
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THE ACTUAL PRODUCT
Compare with LG 27GM950B-B
Specifications checked 17 Oct 2026Manufacturer specifications, not a hands-on test.
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LG 27GM950B-BUK manufacturer model · 27GM950B-B
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- Panel technology
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Key strengths
The mini-LED backlight has 2,304 dimming zones. Apple rates it at up to 1,000 nits in SDR and 2,000 nits peak HDR below 25 °C.
The included stand offers 105 mm of height travel as well as tilt; one cable can connect the host and provide up to 140 W of charging.
Before you buy
120 Hz depends on the host: several earlier Apple-silicon Macs are limited to 60 Hz, as are compatible iPads other than iPad Pro M5.
Apple lists specific compatible Macs and iPads; camera features and firmware updates require a Mac. Some older compatible iPads reduce accessory USB-C data speed to USB 2.
Every specification. With its source.
Full specifications
Exact configuration: Standard glass · Tilt- and height-adjustable stand
40 specifications in 11 groups. Values are manufacturer specifications unless a row says “Measured result” or “Calculated from cited specifications”.
Screen & panel
6 items
- Screen diagonal
- 27 inSource
- Native resolution
- 5120 × 2880Source
- Panel technology
- IPS LCD with oxide TFT technology
Apple Technology Overview, LCD Panel, page 8 and technical specifications page 26; mini-LED is the backlight, not an OLED panel.
Source - Pixel density
- 218 ppiSource
- Backlight
- Mini-LED with 2,304 local dimming zonesSource
- Selected glass
- Standard glass
Nano-texture glass is a separate order option and is not represented by this selected SKU.
Source
Refresh & response
3 items
- Maximum refresh rate
- 120 Hz
Mac models with M1, M1 Pro, M1 Max, M1 Ultra, M2 or M3 support up to 60 Hz. iPad Pro M5 supports 120 Hz; other compatible iPads support 60 Hz.
Source - Adaptive Sync
- YesSource
- Adaptive refresh range
- 47–120 Hz
Apple Technology Overview page 26; maximum supported refresh depends on the connected Mac or iPad.
Source
Colour, brightness & HDR
7 items
- SDR brightness
- 1000 cd/m²
Up to 1,000 nits in SDR; manufacturer rating, not a measured result.
Source - Peak HDR brightness
- 2000 cd/m²
Apple footnote: ambient temperature below 25 °C. Peak HDR brightness is separate from sustained SDR brightness.
Source - HDR support
- 5K Retina XDR; HDR Video (P3-ST 2084) reference mode
No unsupported certification or independent HDR performance score is inferred.
Source - Contrast ratio
- 1,000,000:1
Apple’s manufacturer specification, not an independent static contrast measurement.
Source - Colour gamuts
- P3 and Adobe RGB
Apple lists wide-colour support without a percentage coverage rating on the technical specifications page.
Source - Display colours
- 1 billion coloursSource
- True Tone
- YesSource
Inputs & connections
5 items
- USB-C
- YesSource
- Connections
- 1 × upstream Thunderbolt 5 with 140 W host charging; 1 × downstream Thunderbolt 5; 2 × USB-C (up to 10 Gb/s)
Thunderbolt 5 is rated up to 120 Gb/s; the downstream port supports accessories or display daisy-chaining. Display and accessory support depend on the host.
Source - Camera
- 12 MP Center Stage camera with Desk View
Camera features and firmware updates require connection to a Mac.
Source - USB hub
- Yes
One downstream Thunderbolt 5 port and two USB-C ports for peripherals, storage and networking; upstream Thunderbolt connection to the host.
Source - Host charging
- 140 W
Upstream Thunderbolt 5 port; this is host charging capability, not display power consumption.
Source
Stand & mounting
5 items
- Stand height adjustment
- Yes
Applies to this selected tilt- and height-adjustable stand
Source - Stand height travel
- 105 mmSource
- Stand tilt
- −5° to +25°Source
- Portrait pivot on selected stand
- No
Apple lists landscape orientation for this stand. The separate VESA-mount configuration supports landscape or portrait.
Source - Alternative VESA option
- 100 × 100 mm VESA mount adapter
A separate order configuration; not included with this selected stand SKU.
Source
Size, weight & build
3 items
- Dimensions with selected stand
- 623 × 478–583 × 214 mm (width × height × depth)
With the selected tilt- and height-adjustable stand only. VESA and alternative-stand dimensions are separate configurations.
Source - Stand depth
- 214 mmSource
- Mass with selected stand
- 8.5 kg
Display with the selected stand. Apple states that weight varies by configuration and manufacturing process.
Source
Environment & materials
1 item
- Operating temperature
- 10–35 °CSource
Power & energy
3 items
- Power supply
- Internal AC supply; 100–240 V, 50–60 Hz
- Declared energy-test power
- 32.7 W on-mode SDR; 47.7 W on-mode HDR; 0.5 W standby
EU product-information-sheet declared test-mode values, not actual use measurements or a laptop-charging total. No running-cost score is inferred.
Source - Energy class
- G (SDR and HDR)Source
Eye care & features
1 item
- Compatible hosts
- Listed Apple-silicon Macs with macOS Tahoe 26.3.1 or later; listed iPad Pro and iPad Air models with iPadOS 26.3.1 or later
Not a general Windows or all-USB-C-host compatibility assertion. Camera features and firmware updates require a Mac; some older compatible iPads reduce the USB-C accessory ports to USB 2 speeds. M1/M1 Pro/M1 Max/M1 Ultra/M2/M3 Macs run this display at up to 60 Hz; iPad Pro M5 supports 120 Hz and other compatible iPads 60 Hz.
Source
Audio
4 items
- Integrated speakers
- YesSource
- Speaker construction
- Six-speaker system with force-cancelling woofers
Apple does not publish amplifier output wattage on the technical specifications page.
Source - Built-in microphones
- Yes
Three-microphone array with directional beamforming.
Source - Audio features
- Wide stereo; Spatial Audio for Dolby Atmos music or video; Hey Siri
Requires compatible content and connected hardware/software as applicable.
Source
Box, warranty & identity
2 items
- In the box
- Studio Display XDR; Thunderbolt 5 Pro cable (1 m)Source
- Selected UK model
- MFEL4B/A; regulatory model A3348
UK Apple Store configuration; no unverified US electrical plug, warranty or availability equivalence is asserted.
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