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LG UltraGear 25G590B vs LG UltraGear 27GR83Q-B

Product A: LG

UltraGear 25G590B

105 of 172 known
Change LG UltraGear 25G590B

Compare the LG UltraGear 27GR83Q-B with

Product B: LG

UltraGear 27GR83Q-B

86 of 172 known
Change LG UltraGear 27GR83Q-B

Compare the LG UltraGear 25G590B with

76 of 164 fields differ

Download CSVDownload JSON
  • 39 different values
  • 37 known for one only
  • 33 the same
  • 55 missing for both

Biggest differences

Each bar uses the scale of all 179 monitors.

  1. Refresh rateA: 1,100HzB: 240HzUltraGear 25G590B is 4.6 times higher.
  2. Power use (max)Lower is betterA: 28WB: 55WUltraGear 25G590B is 27 W lower.
  3. Power use HDR (EU label)Lower is betterA: 28.5WB: 44.6WUltraGear 25G590B is 16.1 W lower.
  4. Power use SDR (EU label)Lower is betterA: 18.1WB: 25.7WUltraGear 25G590B is 7.6 W lower.
  5. Pixel densityA: 89.9ppiB: 108.8ppiUltraGear 27GR83Q-B is 18.9 ppi higher.

Refresh rate per resolution

The best rate over any port. Bars run from 0 to 1200 Hz.

2560 × 1440Native for B
ANot listed
B240Hz
1920 × 1080Native for A
A1100Hz
BNot listed

Size, drawn to scale

Front and side. Solid lines show the stand at its lowest. Dashed lines show it at its highest.

Weight

0 to 15 kg

Weight with stand
A5.2kg
B6.2kg
Weight without stand
A3.5kg
B4.3kg
Box weight
A7.1kg
B8.6kg

All 172 fields

Every value links to where we found it.

ALG UltraGear 25G590B
BLG UltraGear 27GR83Q-B

General

5 of 8 differ
Series
UltraGear1Maker product pagelg.com/us/monitors/lg-25g590b-b-gaming-monitorRead 14 October 2026Product name UltraGear, 25-inch UltraGear G5.
UltraGear1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026
Model numbers
25G590B-B, 25G590B, 25G590B-B.AUS, 25G590B-B.AEK, 25G590B-B.AEU2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026The Canada page title and URL use 25G590B-B.AUS. The EU sheet uses 25G590B.3Maker product pagelg.com/uk/monitors/gaming/25g590b-bRead 14 October 2026Page data lists model 25G590B-B with SKU 25G590B-B.AEK.EEUK.UK.C.8Maker product pagelg.com/pl/monitory/ultragear-gaming/25g590b-bRead 14 October 2026Page data lists model 25G590B-B with SKU 25G590B-B.AEU.EEPL.PL.C. The EU sheet uses 25G590B.
27GR83Q-B1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026Product page model 27GR83Q-B. The Canadian SKU is 27GR83Q-B.AUS and the UK SKU is 27GR83Q-B.AEK.
GTIN / EAN
8806096933923, 88060969337253Maker product pagelg.com/uk/monitors/gaming/25g590b-bRead 14 October 2026Page data lists EAN 8806096933923 for the UK model 25G590B-B.AEK.8Maker product pagelg.com/pl/monitory/ultragear-gaming/25g590b-bRead 14 October 2026Page data lists EAN 8806096933725 for the Polish model 25G590B-B.AEU.
1951740539049Spec databasebuildcores.com/products/Monitor/44os34ph9/LG-UltraGear-27GR83Q-B-27%22-1440p-240Hz-IPS-MonitorRead 11 October 2026UPC 195174053904 for part number 27GR83Q-B. An eBay listing, a camelcamelcamel Amazon record and a Channel Online catalog list the same code (EAN 0195174053904). The code is not on an LG page.
Announced
May 20269Press articlehothardware.com/news/lg-ultragear-25g590b-preorders-openRead 14 October 2026The article says it debuted a little over three months before 2026-08-25. LG footnotes cite information as of 2026-05-19 (KST) for the world-first claim. May 2026 is used.
Not available
Status
Available3Maker product pagelg.com/uk/monitors/gaming/25g590b-bRead 14 October 2026The LG UK page lists the monitor for sale. Canada and the US also list it with prices. Stock is not stated.
Not available
Predecessor
Not available
Not available
Successor
Not available
Not available
Launch price (US)
$999.999Press articlehothardware.com/news/lg-ultragear-25g590b-preorders-openRead 14 October 2026Price 999.99 USD, pre-order direct from LG in the US, before sales tax. Guru3D and Basic Tutorials give the same figure.11Press articleguru3d.com/story/lg-ultragear-25g590b-1000hz-monitor-opens-for-preorder-atRead 14 October 2026Published 2026-08-27: US pre-orders at 999.99 USD. It lists a 24.5-inch IPS, native 1,000 Hz and an overclocked 1,100 Hz mode.
$499.9911Reviewpcworld.com/article/2067236/lg-ultragear-27gr38q-b-review.htmlRead 11 October 2026Review lists $499.99 MSRP, with $399.99 typical retail. KitGuru reported $499 at launch. US price.12Press articlekitguru.net/peripherals/monitors/joao-silva/lg-unveils-three-new-lg-ultragear-gaming-monitorsRead 11 October 202631 August 2023 launch article: the GR83Q-B goes for $499. US price. The $499.99 MSRP is in the PCWorld review.
Launch price (EU)
€99910Press articlebasic-tutorials.com/news/lg-ultragear-25g590b-first-native-1000-hz-full-hd-gaming-monitor-starts-at-999-eurosRead 14 October 2026Article of 2026-08-26: MSRP 999 euros in Germany, pre-orders since 2026-07-30. The article says 999 euros / 999.99 US dollars (MSRP). Tax treatment is not stated. German consumer prices include VAT.
Not available
Markets
Not available
Not available
Colours
Black3Maker product pagelg.com/uk/monitors/gaming/25g590b-bRead 14 October 2026The UK product title ends with Black.
Not available
Segment
Gaming2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026LG lists it as an UltraGear gaming monitor.
Gaming1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026

Display

6 of 12 differ
Screen size
24.5in(62.2 cm)2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026All Spec: Size 24.5 inch (62.1 cm). LG marketing calls it 25-inch and the EU sheet rounds to 25 inches. 24.5 matches the pixel pitch.
27in(68.6 cm)1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026
Viewable screen diagonal
Not available
Not available
Native resolution
1920 × 1080px2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Resolution 1920 x 1080.
2560 × 1440px1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026
Aspect ratio
16:92Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026
16:91Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026
Pixel density
89.9ppi
108.8ppi
Pixel pitch
0.282mm2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 20260.282 (H) x 0.281 (V) (1 pixel). The horizontal pitch is stored.
0.2331mm3Maker product pagelg.com/be_fr/moniteurs/moniteurs-gaming-ultragear/27gr83q-bRead 11 October 2026Pixel Pitch 0.2331 x 0.2331 mm.10Retailer pagenewegg.com/lg-27gr83q-b-27-qhd-240-hz-ultragear-ips-black/p/N82E16824026379Read 11 October 2026Listing: 0.2331 mm.
Active display area
Not available
Not available
Curved
No2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026No curvature is listed. The UK table shows Curvature as not applicable.
No10Retailer pagenewegg.com/lg-27gr83q-b-27-qhd-240-hz-ultragear-ips-black/p/N82E16824026379Read 11 October 2026Curved Surface Screen: Flat Panel.
Curvature radius
Not available
Not available
Screen surface
Not available
Matte1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026Surface Treatment is Anti-Glare.
Anti-reflection coating
Anti-Glare2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Surface Treatment: Anti-Glare. The ATW (Advanced True Wide) polarizer is a separate feature.
Not available
Touchscreen
Not available
Not available

Panel

7 of 31 differ
Panel type
IPS2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Panel Type IPS.
IPS1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026
Panel type (as published)
IPS2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026
IPS1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026
Backlight
Not available
Edge-lit LED11Reviewpcworld.com/article/2067236/lg-ultragear-27gr38q-b-review.htmlRead 11 October 2026Spec list: Panel type IPS LED edgelit.
Local dimming
No3Maker product pagelg.com/uk/monitors/gaming/25g590b-bRead 14 October 2026The UK table lists Mini-LED Technology and Nano IPS as not applicable. PurePC confirms no local dimming.7Measurementpurepc.pl/test-lg-ultragear-25g590b-b-monitor-1000-hz-recenzja-opiniaRead 14 October 2026PurePC says the monitor has no local dimming and only a basic backlight control.
Not available
Dimming zones
Not available
Not available
Panel maker
Not available
Not available
Panel part number
Not available
Not available
Panel generation
Not available
Not available
Subpixel layout
Not available
Not available
Colour depth
8bits2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 20264Owner's manualgscs-b2c.lge.com/downloadFileRead 14 October 2026Product Specification p 21: 8-bit color is supported.
10bits4Owner's manualgscs-b2c.lge.com/downloadFileRead 11 October 2026Product Specification: HDMI supports 8-bit/10-bit color and DP supports 10-bit color. The 8-bit plus FRC method is in the review source.
Colour depth method
Not available
FRC14Reviewdisplayninja.com/lg-27gr83q-reviewRead 11 October 2026Review states 8-bit + FRC for 1.07 billion colours.
Displayable colours
16.7 million2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Color Depth (Number of Colors) 16.7M, written as 16.7 million.
1.07 billion2Maker product pagelg.com/uk/monitors/gaming/27gr83q-bRead 11 October 2026Color Depth (Number of Colors) 1.07B.
sRGB coverage
99%2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Color Gamut (Typ.) sRGB 99% (CIE1931). The minimum is also sRGB 99% (CIE1931).
Not available
DCI-P3 coverage
90%2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Color Gamut (Min.) lists DCI 90% (CIE1976). It is a minimum figure. PurePC measured 84.4% DCI-P3 coverage in User mode, below LG's claim.
95%1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026Color Gamut (Typ.) DCI-P3 95% (CIE1976). The UK page adds a minimum of 90%.
Adobe RGB coverage
Not available
Not available
Rec. 2020 coverage
Not available
Not available
NTSC coverage
Not available
Not available
Factory calibrated
Yes2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Color Calibrated in Factory YES.
Yes2Maker product pagelg.com/uk/monitors/gaming/27gr83q-bRead 11 October 2026Color Calibrated in Factory YES.
Claimed Delta E
Not available
Not available
Paper calibration report in box
Not available
Not available
Hardware calibration support
Yes2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026HW Calibration: HW Calibration Ready. LG Calibration Studio (True Color Pro) is listed. The manual says to install it to run calibration for the Calibration 1 and 2 picture modes.4Owner's manualgscs-b2c.lge.com/downloadFileRead 14 October 2026Picture Adjust: Calibration 1 and Calibration 2 adjust to the calibrated screen after LG Calibration Studio is run.
Yes2Maker product pagelg.com/uk/monitors/gaming/27gr83q-bRead 11 October 2026HW Calibration Ready. The manual has Calibration 1 and Calibration 2 game modes that need LG Calibration Studio.
Static contrast ratio
1,000:12Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Contrast Ratio (Typ.) 1000:1. The minimum is 700:1.
1,000:11Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026Contrast Ratio (Typ.) 1000:1. The Belgian page adds a minimum of 700:1.
Brightness (typical, SDR)
400nits2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Brightness (Typ.) 400 cd/m2.
400nits3Maker product pagelg.com/be_fr/moniteurs/moniteurs-gaming-ultragear/27gr83q-bRead 11 October 2026Luminosite (Typ.) 400 cd/m2. The Spanish, Greek, Bulgarian and Israeli LG pages also say 400. The Canadian and Brazilian LG pages say 500, so the maker pages disagree.10Retailer pagenewegg.com/lg-27gr83q-b-27-qhd-240-hz-ultragear-ips-black/p/N82E16824026379Read 11 October 2026Listing copies LG US data: Brightness (Typ.) 400 cd/m2.
Brightness (maker minimum)
320nits2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Brightness (Min.) 320 cd/m2.
320nits3Maker product pagelg.com/be_fr/moniteurs/moniteurs-gaming-ultragear/27gr83q-bRead 11 October 2026Luminosite (Min.) 320 cd/m2. The Spanish and Israeli LG pages say the same.10Retailer pagenewegg.com/lg-27gr83q-b-27-qhd-240-hz-ultragear-ips-black/p/N82E16824026379Read 11 October 2026Listing: (Min.) 320 cd/m2.
Peak brightness (HDR)
Not available
Not available
HDR peak test window
Not available
Not available
Full-screen brightness
Not available
Not available
HDR formats
HDR102Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026HDR 10 YES. HDR Effect is a picture mode.
HDR101Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026Features list HDR 10 Yes. HDR Effect is a picture mode and is not stored as a format.
HDR certification
DisplayHDR 4002Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026VESA DisplayHDR 400.
DisplayHDR 4001Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026VESA DisplayHDR 400.
Viewing angle (horizontal)
178°2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Viewing Angle (CR>=10) 178 degrees (R/L).
178°1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026
Viewing angle (vertical)
178°2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Viewing Angle (CR>=10) 178 degrees (U/D).
178°1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026

Refresh rate and motion

14 of 22 differ
Refresh rate per resolution and port
ALG UltraGear 25G590B
Refresh rate per resolution and port. The top rate is in bold.
ResolutionHDMI 2.1DisplayPort 2.1
1920 × 1080Native1000Hz8-bit1100Hz8-bit, DSC
Source4Owner's manualgscs-b2c.lge.com/downloadFileRead 14 October 2026Product Specification p 21: Max Resolution 1920 x 1080 @ 1000 Hz (HDMI) and 1920 x 1080 @ 1100 Hz (DisplayPort) (Overclock). Support Mode tables pp 22-23: the 999.950 Hz timing is Recommended for HDMI Input Compatibility Version 2.1(PC) and for DisplayPort versions 1.4 (DSC) and 2.1 (DSC). The 1100 Hz timing is the Overclock recommended timing and needs DSC support on the graphics card. DP 1100 Hz is the overclock mode. PurePC could not hold more than 240 Hz over HDMI on its RTX 5080 test setup. The maker's table is kept.
BLG UltraGear 27GR83Q-B
Refresh rate per resolution and port. The top rate is in bold.
ResolutionHDMI 2.1DisplayPort 1.4
2560 × 1440Native240Hz240HzDSC
Source4Owner's manualgscs-b2c.lge.com/downloadFileRead 11 October 2026Product Specification: Max Resolution 2560 x 1440 @ 240 Hz (HDMI/DisplayPort). Factory Support Mode lists 240 Hz as recommended timing at input compatibility version 2.1 (PC) on HDMI and 1.4 (DSC) on DisplayPort. Bit depth and chroma at 240 Hz are not stated.
Max refresh rate
1,100Hz
240Hz
Max refresh rate at native resolution
1,100Hz
240Hz
Max refresh rate over DisplayPort
1,100Hz
240Hz
Max refresh rate over HDMI
1,000Hz
240Hz
Max refresh rate over USB-C
Not available
Not available
Max refresh rate at 10-bit
Not available
Not available
Native refresh rate
1,000Hz1Maker product pagelg.com/us/monitors/lg-25g590b-b-gaming-monitorRead 14 October 2026Key feature: NATIVE 1000Hz Refresh Rate (Up to 1100Hz Overclock). The maximum needs Windows 11, an NVIDIA RTX 50 series or AMD RX 9070, 9060 or 7900 series GPU and a DisplayPort 2.1 connection. LG verified 1000 Hz in internal tests.
240Hz1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026
Overclocked refresh rate
1,100Hz1Maker product pagelg.com/us/monitors/lg-25g590b-b-gaming-monitorRead 14 October 2026Up to 1100Hz Overclock. Footnote: 1100 Hz overclock is evaluated based on internal testing.
Not available
Dual mode
No1Maker product pagelg.com/us/monitors/lg-25g590b-b-gaming-monitorRead 14 October 2026The LG FAQ on the Canada page says it delivers native 1000 Hz in FHD at all times, unlike dual-mode displays.
Not available
Minimum fixed refresh rate
Not available
Not available
Adaptive sync technologies
Adaptive-Sync, HDMI VRR, FreeSync Premium, G-SYNC Compatible1Maker product pagelg.com/us/monitors/lg-25g590b-b-gaming-monitorRead 14 October 2026Key feature: NVIDIA G-SYNC Compatible / AMD FreeSync Premium. The 1100 Hz overclock does not support FreeSync Premium and G-SYNC is certified only at 1000 Hz.4Owner's manualgscs-b2c.lge.com/downloadFileRead 14 October 2026Game Adjust: Adaptive-Sync/VRR, supported interface DisplayPort (Adaptive-Sync), HDMI (VRR). FreeSync Premium and G-SYNC Compatible come from the spec tables.
FreeSync Premium, G-SYNC Compatible, Adaptive-Sync, HDMI VRR1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026Features list AMD FreeSync Premium, G-SYNC Compatible and VRR. The manual names DisplayPort Adaptive-Sync and HDMI Variable Refresh Rate as the supported interfaces.4Owner's manualgscs-b2c.lge.com/downloadFileRead 11 October 2026Supported Interface: DisplayPort (Adaptive-Sync), HDMI (Variable Refresh Rate). A graphic card with NVIDIA G-SYNC or AMD FreeSync is needed.
VRR range per port
Not available
Not available
Low framerate compensation
Not available
Yes8Certification listamd.com/en/resources/support-articles/faqs/DH3-013.htmlRead 11 October 2026AMD lists support for low framerate compensation (LFC) under the FreeSync Premium tier, which LG lists for this monitor.
Response time (maker GtG claim)
1ms2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Response Time: Less than 1ms GtG, stored as 1 with the less-than qualifier. The UK page says 1ms. LG's FAQ text on the same page says 0.5 ms GtG. LG does not state the overdrive setting.
1ms1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 20261ms (GtG at Faster).
Response time (maker MPRT claim)
Not available
Not available
Overdrive settings
Faster, Fast, Normal, Off4Owner's manualgscs-b2c.lge.com/downloadFileRead 14 October 2026Game Adjust, Response Time: Faster, Fast, Normal, Off.
Faster, Fast, Normal, Off4Owner's manualgscs-b2c.lge.com/downloadFileRead 11 October 2026Game Adjust, Response Time: Faster, Fast, Normal, Off.
Motion blur reduction
Yes1Maker product pagelg.com/us/monitors/lg-25g590b-b-gaming-monitorRead 14 October 2026MBR Pro (Motion Blur Reduction Pro) uses the backlight between frames.
Not available
Blur-reduction technology
MBR Pro1Maker product pagelg.com/us/monitors/lg-25g590b-b-gaming-monitorRead 14 October 2026MBR Pro (Motion Blur Reduction Pro).
Not available
Blur reduction works with VRR
No1Maker product pagelg.com/us/monitors/lg-25g590b-b-gaming-monitorRead 14 October 2026Footnote: AMD FreeSync Premium and NVIDIA G-SYNC Compatible are disabled when MBR Pro is enabled.
Not available
Flicker-free (claimed)
Not available
Yes1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026Features list Flicker Safe Yes. This is a maker claim.
Black frame insertion
Not available
Not available

Measured

5 of 12 differ
Input lag at maximum refresh rate
1.2ms7Measurementpurepc.pl/test-lg-ultragear-25g590b-b-monitor-1000-hz-recenzja-opiniaRead 14 October 2026PurePC, published 2026-08-27: 1.2 ms input lag at 1000 Hz, 1920 x 1080, default mode, measured with an OSRTT Pro CS.
Not available
Input lag at 60 Hz
Not available
Not available
Average response time (measured)
3.05ms7Measurementpurepc.pl/test-lg-ultragear-25g590b-b-monitor-1000-hz-recenzja-opiniaRead 14 October 2026PurePC: average grey-to-grey transition about 3.05 ms at 1000 Hz with Overdrive set to Fast, measured with an OSRTT Pro CS. The best single transition was 1.5 ms. LG's 1 ms claim does not state the overdrive setting or the averaging, so the claim and this mean are different measures.
Not available
Overshoot (measured)
Not available
Not available
Contrast ratio (measured)
1,217:17Measurementpurepc.pl/test-lg-ultragear-25g590b-b-monitor-1000-hz-recenzja-opiniaRead 14 October 2026PurePC: contrast ratio 1217:1 in User mode with a black level of 0.3448 cd/m2, measured with a Calibrite Display Plus HL and Calibrite Profiler.
Not available
SDR brightness (measured)
409.6nits7Measurementpurepc.pl/test-lg-ultragear-25g590b-b-monitor-1000-hz-recenzja-opiniaRead 14 October 2026PurePC: 409.6 cd/m2 average luminance in User mode at 100 percent backlight, measured with a Calibrite Display Plus HL. Maker typical is 400 nits.
477nits11Reviewpcworld.com/article/2067236/lg-ultragear-27gr38q-b-review.htmlRead 11 October 2026Review of 25 September 2023 states a maximum brightness of 477 nits in SDR. Window size, picture mode and brightness setting are not stated.
HDR brightness in a real scene (measured)
Not available
Not available
PWM flicker frequency (measured)
Not available
Not available
VRR range (measured)
Not available
Not available
Colour accuracy (measured Delta E)
1.497Measurementpurepc.pl/test-lg-ultragear-25g590b-b-monitor-1000-hz-recenzja-opiniaRead 14 October 2026PurePC: average Delta E 1.49 in User mode before profiling, against sRGB, measured with a Calibrite Display Plus HL. Delta E against DCI-P3 was 1.80 before profiling. After profiling it was 0.74 for sRGB.
Not available
Gray uniformity (measured)
Not available
Not available
Reflections (measured)
Not available
Not available

Connectivity

9 of 19 differ
Video inputs
ALG UltraGear 25G590B
TypeVersionCountMax bandwidth (Gbps)DSC
DisplayPort2.1 UHBR20180Yes
HDMI2.1248Not available
Source1Maker product pagelg.com/us/monitors/lg-25g590b-b-gaming-monitorRead 14 October 2026Key feature: DP 2.1 (UHBR 20) x1, HDMI 2.1 x2. The 80 Gbps figure is the raw UHBR20 link rate. The 48 Gbps HDMI figure is the full HDMI 2.1 rate. PurePC calls the HDMI ports full-bandwidth. LG does not publish either number for this model.2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026DisplayPort YES (1ea), DP Version 2.1. HDMI YES (2ea).
BLG UltraGear 27GR83Q-B
TypeVersionCountDSC
DisplayPort1.41Yes
HDMI2.12Not available
Source1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026Connectivity table lists DisplayPort 1ea and HDMI 2ea. The accessory table names HDMI ver 2.1. The UK page names DP version 1.4 (DSC).2Maker product pagelg.com/uk/monitors/gaming/27gr83q-bRead 11 October 2026DP Version 1.4 (DSC).4Owner's manualgscs-b2c.lge.com/downloadFileRead 11 October 2026DisplayPort 240 Hz timing is listed as input compatibility version 1.4 (DSC).
HDMI ports
2
2
DisplayPort ports
1
1
Highest HDMI version
2.1
2.1
Highest DisplayPort version
2.1 UHBR20
1.4
HDMI features
VRR3Maker product pagelg.com/uk/monitors/gaming/25g590b-bRead 14 October 2026The UK table does not list HDMI features. VRR over HDMI comes from the manual.4Owner's manualgscs-b2c.lge.com/downloadFileRead 14 October 2026Game Adjust: HDMI (VRR). ALLM and others are not stated in the manual.
VRR4Owner's manualgscs-b2c.lge.com/downloadFileRead 11 October 2026Game Adjust: supported interface HDMI Variable Refresh Rate. ALLM and CEC are not stated.
USB-C video (DP Alt Mode)
No3Maker product pagelg.com/uk/monitors/gaming/25g590b-bRead 14 October 2026Connectivity table: USB-C, USB-C max resolution and USB-C power delivery are all not applicable. LG Canada's launch release mentions 90 W power delivery, which conflicts with every spec table and the manual, so it is not used.
No10Retailer pagenewegg.com/lg-27gr83q-b-27-qhd-240-hz-ultragear-ips-black/p/N82E16824026379Read 11 October 2026Video Ports list only 1 x DisplayPort 1.4 and 2 x HDMI 2.1. There is no USB-C port.
USB-C power delivered
Not available
Not available
Thunderbolt
Not available
Not available
USB upstream ports
ALG UltraGear 25G590B
ConnectorCount
USB-C1
Source2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026USB Upstream Port YES (via USB-C). The USB version is not stated. The port serves software updates and the headset microphone, not video or power.
BLG UltraGear 27GR83Q-B
ConnectorUSB versionCount
USB-B3.01
Source1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026USB Upstream Port 1ea, ver 3.0.
USB downstream hub ports
ALG UltraGear 25G590B
Not available
BLG UltraGear 27GR83Q-B
ConnectorUSB versionCount
USB-A3.02
Source1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026USB Downstream Port 2ea, ver 3.0.
KVM switch
No3Maker product pagelg.com/uk/monitors/gaming/25g590b-bRead 14 October 2026Built-in KVM not applicable.
Not available
Daisy chain (MST)
No3Maker product pagelg.com/uk/monitors/gaming/25g590b-bRead 14 October 2026Daisy Chain not applicable.
Not available
Ethernet
No3Maker product pagelg.com/uk/monitors/gaming/25g590b-bRead 14 October 2026LAN (RJ-45) not applicable.
Not available
3.5 mm headphone output
Yes2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Headphone out 4-pole (Sound+Mic).
Yes1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026Headphone out 4-pole (Sound+Mic).
3.5 mm microphone input
Yes2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026The shared 4-pole headphone jack carries microphone contacts. The manual says the microphone works only with the monitor USB port connected to a PC.
Yes1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026The same 4-pole headset jack. The manual says the USB A-to-B cable must be connected for a headset microphone.
Optical out
Not available
Not available
Picture in picture
No3Maker product pagelg.com/uk/monitors/gaming/25g590b-bRead 14 October 2026PIP not applicable.
Not available
Picture by picture
No3Maker product pagelg.com/uk/monitors/gaming/25g590b-bRead 14 October 2026PBP not applicable.
Not available

Smart features

None of 4 known
Smart platform
Not available
Not available
Wi-Fi
Not available
Not available
Bluetooth
Not available
Not available
Remote control
Not available
Not available

Audio and camera

2 of 5 differ
Speakers
No3Maker product pagelg.com/uk/monitors/gaming/25g590b-bRead 14 October 2026Sound: Speaker not applicable.
No10Retailer pagenewegg.com/lg-27gr83q-b-27-qhd-240-hz-ultragear-ips-black/p/N82E16824026379Read 11 October 2026Built-in Speakers: No. PCWorld also lists no speakers.
Number of speakers
Not available
Not available
Speaker power per channel
Not available
Not available
Webcam
No3Maker product pagelg.com/uk/monitors/gaming/25g590b-bRead 14 October 2026Camera not applicable.
Not available
Microphone
No3Maker product pagelg.com/uk/monitors/gaming/25g590b-bRead 14 October 2026Mic not applicable.
Not available

Ergonomics and controls

10 of 15 differ
Stand height adjustment
135mm4Owner's manualgscs-b2c.lge.com/downloadFileRead 14 October 2026Adjusting the Stand Height p 10: Max. 135.0 mm.
110mm4Owner's manualgscs-b2c.lge.com/downloadFileRead 11 October 2026Adjusting the Stand Height: Max. 110.0 mm.
Tilt
Forward5°Backward35°4Owner's manualgscs-b2c.lge.com/downloadFileRead 14 October 2026Adjusting the Angle p 11: forward or backward from -5 to 35 degrees. Stored as 5 forward and 35 backward.
Forward5°Backward15°4Owner's manualgscs-b2c.lge.com/downloadFileRead 11 October 2026Adjusting the Angle: -5 to 15 degrees.
Swivel
Not available
Not available
Pivot
Counterclockwise90°Clockwise90°4Owner's manualgscs-b2c.lge.com/downloadFileRead 14 October 2026Adjusting the Angle p 11: 90 degrees to the left or to the right.
Clockwise90°4Owner's manualgscs-b2c.lge.com/downloadFileRead 11 October 2026Pivot Feature: rotates 90 degrees clockwise. No counterclockwise value is stated. The stand has no swivel.
Removable stand
Yes2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026The manual says to remove the stand before installing on a wall mount, by performing the stand attachment in reverse.4Owner's manualgscs-b2c.lge.com/downloadFileRead 14 October 2026Installing on the Wall p 7: remove the stand before installing on a wall mount.
Not available
VESA mount
100 x 1002Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Wall Mountable 100 x 100 mm.
100 x 1001Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026Wall Mountable 100 x 100 mm.
VESA adapter needed
Not available
No4Owner's manualgscs-b2c.lge.com/downloadFileRead 11 October 2026Wall mount plate attaches directly to the four screws on the back. Wall Mount 100 x 100 mm, M4 x L10 screws, optional plate LSW 149.
Security lock slot
Yes4Owner's manualgscs-b2c.lge.com/downloadFileRead 14 October 2026Using the Kensington Lock p 6.
Yes4Owner's manualgscs-b2c.lge.com/downloadFileRead 11 October 2026Using the Kensington Lock section.
On-screen menu controls
Joystick4Owner's manualgscs-b2c.lge.com/downloadFileRead 14 October 2026How to Use the Joystick Button p 10.
Joystick, Software4Owner's manualgscs-b2c.lge.com/downloadFileRead 11 October 2026Joystick button controls the menu. OnScreen Control software is supported.
Desktop software
LG Switch, LG Calibration Studio, Dual Controller2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026SW Application list: LG Calibration Studio (True Color Pro), Dual Controller. The UK table also lists LG Switch. The manual lists Monitor Driver, LG Switch, LG Calibration Studio and Dual Controller.4Owner's manualgscs-b2c.lge.com/downloadFileRead 14 October 2026Supported Drivers and Software p 11: Monitor Driver, LG Switch, LG Calibration Studio, Dual Controller.
LG OnScreen Control (LG Screen Manager), LG Calibration Studio1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026OnScreen Control (LG Screen Manager) is listed. LG Calibration Studio is named in the manual.
User firmware updates
Yes1Maker product pagelg.com/us/monitors/lg-25g590b-b-gaming-monitorRead 14 October 2026Footnote: a USB Type-C (upstream) connection to a PC is required for monitor software updates.4Owner's manualgscs-b2c.lge.com/downloadFileRead 14 October 2026The USB-C port is for software updates and the headset microphone (Connecting Peripherals p 14).
Not available
Ambient light sensor
Not available
Not available
Presence sensor
Not available
Not available
RGB lighting
Yes2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026RGB LED Lighting: UltraGear Lighting. The manual lists static colours and a Cycling mode for the lighting on the back.4Owner's manualgscs-b2c.lge.com/downloadFileRead 14 October 2026General menu: UltraGear Lighting for the back of the monitor, with Static 1 to 4, Cycling and Off.
Not available
Gaming menu features
Black Stabilizer, Crosshair, FPS Counter, Dynamic Action Sync2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Features list: Black Stabilizer, Crosshair, FPS Counter, Dynamic Action Sync.4Owner's manualgscs-b2c.lge.com/downloadFileRead 14 October 2026Game Adjust: Black Stabilizer, Crosshair, FPS Counter. Dynamic Action Sync is on the product page.
Black Stabilizer, Dynamic Action Sync, Crosshair, FPS Counter1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026Names as listed in the feature table.

OLED care

None of 3 known
OLED care
Not available
Not available
Burn-in covered by warranty
Not available
Not available
Burn-in warranty length
Not available
Not available

Dimensions and weight

6 of 7 differ
Dimensions with stand
Width571.8Depth207.3mm(22.5 × 8.2 in)2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Dimension with Stand (W x H x D) 571.8 x 511.2 x 207.3 mm. The stand position behind the 511.2 mm height is not stated, so only width and depth are stored.
Width613.5Height (lowest)467.7Height (highest)577.7Depth253.7mm(24.2 × 18.4 to 22.7 × 10 in)1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026613.5 x 577.7 x 253.7 (UP) and 613.5 x 467.7 x 253.7 (DOWN).
Dimensions without stand
Width571.8Height333.4Depth43.4mm(22.5 × 13.1 × 1.7 in)2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Dimension without Stand (W x H x D) 571.8 x 333.4 x 43.4 mm.
Width613.5Height371.6Depth51.3mm(24.2 × 14.6 × 2 in)1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026613.5 x 371.6 x 51.3.
Stand footprint
Not available
Not available
Weight with stand
5.2kg(11.5 lb)2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Weight with Stand 5.2 kg.
6.2kg(13.7 lb)1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026Weight with Stand 6.2 kg.
Weight without stand
3.5kg(7.7 lb)2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Weight without Stand 3.5 kg.
4.3kg(9.5 lb)1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026Weight without Stand 4.3 kg.
Box dimensions
Width721Height159Depth481mm(28.4 × 6.3 × 18.9 in)2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Dimension in Shipping (W x H x D) 721 x 159 x 481 mm.
Width691Height184Depth498mm(27.2 × 7.2 × 19.6 in)1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026Dimension in Shipping (W x H x D) 691 x 184 x 498.
Box weight
7.1kg(15.7 lb)2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Weight in Shipping 7.1 kg.
8.6kg(19 lb)1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026Weight in Shipping 8.6 kg.

Power

8 of 13 differ
Power supply
External adapter2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Power Type: External Power (Adapter).
External adapter1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026Power Type External Power (Adapter).
Adapter rating
Not available
65W1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026DC Output 65W (19V / 3.42A).
Input voltage
100-240 V AC, 50/60 Hz2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026AC Input 100~240V (50/60Hz). DC Output 19V / 3.42A.
100-240 V AC, 50/60 Hz1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026AC Input 100~240V (50/60Hz).
Power use (typical)
Not available
50W1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026Power Consumption (Typ.) 50W. The manual states the same 50 W typical.4Owner's manualgscs-b2c.lge.com/downloadFileRead 11 October 2026On mode 50 W (Typical), measured with the LGE test standard: full white pattern at maximum resolution.
Power use (max)
28W2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Power Consumption (Max.) 28W. The EU sheet lists 28.5 W on-mode power in HDR, which is slightly above this figure.
55W10Retailer pagenewegg.com/lg-27gr83q-b-27-qhd-240-hz-ultragear-ips-black/p/N82E16824026379Read 11 October 2026Power Consumption (Max.): 55W in the listing, which copies LG US data. No LG page or manual states a maximum.
Power use SDR (EU label)
18.1W5EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2756856_EN.pdfRead 14 October 2026On mode power demand SDR 18.1 W, class E.
25.7W5Maker spec sheet (PDF)lg.com/uk/lgecs.downloadFile.ldwfRead 11 October 2026EU Product Information Sheet row 4, on mode SDR 25.7 W, class F. The sheet lists model identifier 27GR83Q and refresh rate 60 Hz.6EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_1559054_EN.pdfRead 11 October 2026EPREL on mode power demand SDR 25.7 W, class F, at the default 60 Hz.
Power use HDR (EU label)
28.5W5EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2756856_EN.pdfRead 14 October 2026On mode power demand HDR 28.5 W, class G.
44.6W5Maker spec sheet (PDF)lg.com/uk/lgecs.downloadFile.ldwfRead 11 October 2026Row 6, on mode HDR 44.6 W, class G.6EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_1559054_EN.pdfRead 11 October 2026EPREL on mode power demand HDR 44.6 W, class G.
Standby power
0.5W2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Less than 0.5W in sleep mode. The exact 0.5 W comes from the EU sheet.5EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2756856_EN.pdfRead 14 October 2026Standby 0.5 W.
0.5W4Owner's manualgscs-b2c.lge.com/downloadFileRead 11 October 2026Sleep Mode (Standby Mode) <= 0.5 W with Deep Sleep Mode on.6EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_1559054_EN.pdfRead 11 October 2026EPREL standby mode power demand 0.5 W.
Off-mode power
0.3W2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Less than 0.3W DC off. The exact 0.3 W comes from the EU sheet.5EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2756856_EN.pdfRead 14 October 2026Off mode 0.3 W.
0.3W4Owner's manualgscs-b2c.lge.com/downloadFileRead 11 October 2026Off Mode <= 0.3 W.6EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_1559054_EN.pdfRead 11 October 2026EPREL off mode power demand 0.3 W.
EU energy class SDR
E5EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2756856_EN.pdfRead 14 October 2026Item 3 class E.
F5Maker spec sheet (PDF)lg.com/uk/lgecs.downloadFile.ldwfRead 11 October 2026Row 3.6EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_1559054_EN.pdfRead 11 October 2026EPREL SDR class F.
EU energy class HDR
G5EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2756856_EN.pdfRead 14 October 2026Item 5 class G.
G5Maker spec sheet (PDF)lg.com/uk/lgecs.downloadFile.ldwfRead 11 October 2026Row 5.6EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_1559054_EN.pdfRead 11 October 2026EPREL HDR class G.
Energy per 1000 h SDR
18kWh6EU energy label (EPREL)eprel.ec.europa.eu/labels/electronicdisplays/Label_2756856.pdfRead 14 October 2026The EU label prints 18 kWh/1000h under class E. Read from the rendered label.
26kWh7EU energy label (EPREL)eprel.ec.europa.eu/labels/electronicdisplays/Label_1559054.pdfRead 11 October 2026EPREL energy label for 27GR83Q reads 26 kWh/1000h. LG's own label PDF shows the same.
Energy per 1000 h HDR
29kWh6EU energy label (EPREL)eprel.ec.europa.eu/labels/electronicdisplays/Label_2756856.pdfRead 14 October 2026The EU label prints 29 kWh/1000h in the HDR box under class G.
45kWh7EU energy label (EPREL)eprel.ec.europa.eu/labels/electronicdisplays/Label_1559054.pdfRead 11 October 2026The same label reads 45 kWh/1000h for HDR.

Certifications

2 of 9 differ
VESA ClearMR
Not available
Not available
VESA AdaptiveSync Display
Not available
Not available
TÜV certifications
Not available
Not available
Low blue light
Software2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Reader Mode is a selectable picture mode.
Not available
ENERGY STAR
Not available
Not available
TCO Certified
Not available
Not available
EPEAT
Not available
Not available
Colour certifications
Not available
Not available
Other certifications
CE, KC (for Rep. of Korea), UL (cUL)2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026STANDARD section: CE, KC (for Rep. of Korea), UL (cUL).
Not available

In the box

2 of 2 differ
In the box
DisplayPort cable (version 2.1), AC/DC adapter, Power cord2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Canada Accessory list: Adapter YES, Display Port YES (ver 2.1), Power Cord depends on country. The UK table also lists an HDMI cable (black, 1.8 m) and PurePC found an HDMI cable in its Polish box. Canada does not list one, so only the common items are stored.
HDMI cable (ver 2.1), AC/DC adapter, DisplayPort cable, Power cord (depends on country), USB A-to-B cable1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026Accessory table: HDMI (ver 2.1), Adapter, Display Port, Power Cord (depends on country), USB A to B.
Cables included
ALG UltraGear 25G590B
Type
DisplayPort cable (version 2.1)
Source2Maker product pagelg.com/ca_en/monitors/gaming/25g590b-b-ausRead 14 October 2026Display Port cable (ver 2.1) is listed in Canada, the UK and found by PurePC. Count is not stated.
BLG UltraGear 27GR83Q-B
Type
HDMI
DisplayPort
USB A-to-B
Source1Maker product pagelg.com/ca_en/monitors/gaming/27gr83q-bRead 11 October 2026Same accessory table. Cable counts and lengths are not stated.

Warranty

0 of 2 differ
Manufacturer warranty (source market)
1year5EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_2756856_EN.pdfRead 14 October 2026Item 23: minimum duration of the general guarantee offered by the supplier is 1 year. This is the EU sheet figure. Retailers in some countries state 2 years, and other regions differ.
1year5Maker spec sheet (PDF)lg.com/uk/lgecs.downloadFile.ldwfRead 11 October 2026Minimum duration of the general guarantee offered by the supplier is 1 year in this EU sheet. Other markets can differ.6EU energy label (EPREL)eprel.ec.europa.eu/fiches/electronicdisplays/Fiche_1559054_EN.pdfRead 11 October 2026EPREL minimum duration of the general guarantee offered by the supplier is 1 year.
Dead pixel policy
Not available
Not available

Both are also in the API. Back to all monitors.