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ASUS XG27ACS vs LG 27GR83Q-B: Which 1440p Gaming Monitor Fits Your Setup?

The LG is the connectivity and refresh-rate choice: its 240Hz panel and HDMI 2.1 make the premium easier to justify for high-frame-rate PC gaming or current consoles. The ASUS is the laptop-desk choice: its USB-C DP Alt Mode and ergonomics are useful, and RTINGS reports sharp motion, but it gives up the 240Hz ceiling and HDMI 2.1. Neither monitor is a dark-room HDR specialist.

Published by Pickoryx · Published 2026-09-25

Source checked 2026-09-26 00:00 UTC

Products compared

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The buying question

Is the LG 27GR83Q-B.AUS 240Hz and HDMI 2.1 combination worth its premium over the ASUS XG27ACS 180Hz model with USB-C video?

LG buys a higher refresh ceiling and HDMI 2.1; ASUS buys USB-C laptop connectivity and RTINGS-tested sharp motion at a lower tier. Both are IPS HDR400 displays with weak dark-room contrast.

Quick verdict

Choose ASUS ROG Strix XG27ACS 27-inch 1440p 180Hz USB-C Gaming Monitor if

  • You want video over USB-C from a laptop and a monitor stand with tilt, swivel, pivot and height adjustment.
  • Your games or GPU target 180Hz or below and you prefer the ASUS feature set at the lower current-price context.
  • You play in a bright room and do not need HDMI 2.1 bandwidth.
View ASUS ROG Strix XG27ACS 27-inch 1440p 180Hz USB-C Gaming Monitor on AmazonPaid link
When to skip: You need deep blacks or standout HDR; both tested models have low contrast and no local dimming. You need a definitive Buy Now or Wait call; the available price observations are short.
When the recommendation changes
  • The live ASIN maps to a different regional or panel variant.
  • The current offer gap changes materially at review time.
  • A future bilateral test changes the refresh, motion or HDR trade-offs.

The differences that matter

Refresh Rate And Motion

ASUS ROG Strix XG27ACS 27-inch 1440p 180Hz USB-C Gaming Monitor

ASUS lists a 180Hz maximum refresh rate; RTINGS reports sharp motion across its range and low input lag for this exact XG27ACS model.[1, 5, 4]

LG 27GR83Q-B.AUS 27-inch QHD 240Hz UltraGear Gaming Monitor

LG lists a 240Hz maximum refresh rate; RTINGS reports sharp motion at any refresh rate and low input lag for the exact 27GR83Q-B.[2, 6, 4]

What this changes: LG is the better fit when the system can sustain frame rates near 240Hz and the buyer values the smoother ceiling. RTINGS also reports sharper tested motion for ASUS, so the refresh-rate advantage is not a universal motion-quality verdict.[4]

Best fit: LG 27GR83Q-B.AUS 27-inch QHD 240Hz UltraGear Gaming MonitorView LG 27GR83Q-B.AUS 27-inch QHD 240Hz UltraGear Gaming Monitor on AmazonPaid link

Hdmi 2 1 Console Use

ASUS ROG Strix XG27ACS 27-inch 1440p 180Hz USB-C Gaming Monitor

ASUS documents HDMI 2.0 plus DisplayPort 1.4 and Type-C DP Alt Mode; RTINGS says the XG27ACS lacks HDMI 2.1 bandwidth but works with current consoles.[1, 5, 4]

LG 27GR83Q-B.AUS 27-inch QHD 240Hz UltraGear Gaming Monitor

LG documents two HDMI 2.1 inputs, DisplayPort and VRR; RTINGS says HDMI 2.1 lets the 27GR83Q-B reach its max refresh and support current-gen consoles over HDMI.[2, 6, 4]

What this changes: Choose LG for a console or HDMI-connected PC where HDMI 2.1 bandwidth matters. ASUS remains usable over HDMI, but its HDMI 2.0 ceiling is the relevant limitation.[1, 2, 4]

Best fit: LG 27GR83Q-B.AUS 27-inch QHD 240Hz UltraGear Gaming MonitorView LG 27GR83Q-B.AUS 27-inch QHD 240Hz UltraGear Gaming Monitor on AmazonPaid link

Usb C And Ergonomics

ASUS ROG Strix XG27ACS 27-inch 1440p 180Hz USB-C Gaming Monitor

ASUS provides Type-C video through DP Alt Mode and a USB hub; its official page documents tilt, swivel, pivot and height adjustment.[1, 5]

LG 27GR83Q-B.AUS 27-inch QHD 240Hz UltraGear Gaming Monitor

LG documents HDMI 2.1, DisplayPort and USB connectivity plus a height, pivot and tilt stand. Its exact regional support page confirms the 27GR83Q-B.AUS identity; it does not document USB-C video input.[2, 3]

What this changes: ASUS is the more direct one-cable laptop choice because its Type-C port carries video. LG offers the more conventional gaming-monitor connection set and comparable stand adjustments; do not assume its USB ports replace a USB-C dock.[1, 2]

Best fit: ASUS ROG Strix XG27ACS 27-inch 1440p 180Hz USB-C Gaming MonitorView ASUS ROG Strix XG27ACS 27-inch 1440p 180Hz USB-C Gaming Monitor on AmazonPaid link

Hdr Dark Room Picture

ASUS ROG Strix XG27ACS 27-inch 1440p 180Hz USB-C Gaming Monitor

ASUS advertises DisplayHDR 400 and DCI-P3 97%; RTINGS finds low contrast, no local dimming and limited HDR with gray-looking blacks.[1, 5, 4]

LG 27GR83Q-B.AUS 27-inch QHD 240Hz UltraGear Gaming Monitor

LG advertises DisplayHDR 400 and DCI-P3 95% typical; RTINGS also finds low contrast, no local dimming and limited HDR with gray-looking blacks.[2, 6, 4]

What this changes: Neither monitor is a strong dark-room HDR upgrade. Treat HDR400 as a compatibility/format feature here and choose by room lighting, refresh and connectivity instead of expecting deep blacks.[4, 5, 6]

No clear winner

Best for your routine

Dark-room HDR movie and gaming picture

No clear winner

RTINGS reports low contrast, no local dimming and limited HDR for both; neither has a tested picture-quality advantage that resolves this use case.

Value and trade-offs

One or both observed offers have eligibility conditions, so no unrestricted price difference is shown.

The LG premium is justified only when 240Hz and HDMI 2.1 change the buyer’s connection or gaming target. ASUS value is stronger when USB-C video and a lower current offer matter; this interpretation uses the dated catalog context in the research ledger, not a public price promise.

Price observations are short and must be refreshed at review time; there is not enough history for a definite Buy Now or Wait recommendation.

Limitations

  • This is a source-based comparison; Pickoryx did not perform hands-on testing.
  • RTINGS measurements and category placement apply to its tested units and methodology; they do not guarantee every panel batch or game.
  • The live catalog ASINs were matched to XG27ACS and 27GR83Q-B.AUS, but retailer packages and regional accessories can change.
  • Current price and availability are dated context and not a 30-, 90- or 365-day low.
  • No long-term reliability, warranty-service or defect-rate winner is claimed.

Questions shoppers ask

Is the LG 27GR83Q-B.AUS faster than the ASUS XG27ACS?

It has the higher maximum refresh rate, 240Hz versus 180Hz. RTINGS also reports sharp motion and low input lag on both, and its bilateral roundup says the ASUS can have sharper tested motion, so refresh ceiling and motion handling should be treated as separate decisions.

Which monitor is better for PS5 or Xbox Series X|S?

LG is the better fit when HDMI 2.1 bandwidth matters: LG documents HDMI 2.1 and RTINGS says it supports current-gen consoles over HDMI. ASUS works with consoles but lacks HDMI 2.1 bandwidth.

Does ASUS USB-C charge a laptop?

The source set establishes Type-C DP Alt Mode for video and a USB hub. It does not establish a laptop charging-power level, so treat ASUS as a one-cable video and peripheral convenience rather than assume full laptop charging.

Which one has better HDR in a dark room?

Neither is a strong dark-room HDR choice in the tested evidence. RTINGS reports low contrast, no local dimming and limited HDR for both models.

Methodology and sources

Compared refresh and tested motion, HDMI 2.1 console bandwidth, USB-C and stand ergonomics, and HDR/dark-room limitations, then translated the differences into use-case-specific choices.

Structured drafting used the assigned candidate, live product identity and dated price context as inputs; model claims were checked against opened official and independent sources.

View 6 sources
  1. 1.ROG Strix XG27ACS USB Type-C Gaming MonitorASUS ROG USA · Official support · Source checked 2026-09-26 00:00 UTC
    Evidence used on this page
    • Product overview: 27-inch 2560x1440, 180Hz, Fast IPS, USB Type-C DP video/hub; Versatile Connectivity; Compact Design, Ergonomic Comfort: Exact ASUS model page identifies XG27ACS and documents 27-inch 2560x1440 Fast IPS, 180Hz, HDR/DisplayHDR 400, Type-C DP Alt Mode, HDMI 2.0, DP 1.4, and tilt/swivel/pivot/height adjustment.
  2. 2.LG 27 Inch UltraGear QHD 1440P 1ms 240Hz Gaming MonitorLG USA · Official support · Source checked 2026-09-26 00:00 UTC
    Evidence used on this page
    • Product overview and features: 27GR83Q-B, QHD IPS, 240Hz, HDR400, HDMI 2.1, DisplayPort, USB, height/pivot/tilt stand: Exact LG base-model page documents 27-inch QHD 2560x1440 IPS, 1ms GTG, 240Hz, DCI-P3 95% typical with DisplayHDR 400, HDMI 2.1, DP, USB and height/pivot/tilt stand.
  3. 3.27GR83Q-B.AUS Product Support PageLG USA · Official support · Source checked 2026-09-26 00:00 UTC
    Evidence used on this page
    • Support heading and product label: 27GR83Q-B.AUS: LG support page confirms the exact regional suffix 27GR83Q-B.AUS used by the live catalog item and links the owner documentation for that model.
  4. 4.The 6 Best G-SYNC Monitors of 2026RTINGS.com · Independent testing · Source checked 2026-09-26 00:00 UTC
    Evidence used on this page
    • Best Lower Mid-Range G-SYNC Monitor (LG 27GR83Q-B) and Best Budget G-SYNC Monitor (ASUS ROG Strix XG27ACS), lines 213-324: RTINGS places both exact models in adjacent buyer tiers and states the bilateral trade-offs: LG 240Hz and HDMI 2.1; ASUS 180Hz without HDMI 2.1; ASUS sharper motion in its testing; both similar bright-room behavior and low-contrast HDR limitations. This is qualitative tested-product evidence and a demand signal, not search volume.
  5. 5.ASUS ROG Strix XG27ACS ReviewRTINGS.com · Independent testing · Source checked 2026-09-26 00:00 UTC
    Evidence used on this page
    • Differences Between Sizes and Variants; PC/Console/Office/HDR sections; Test Bench 2.1.2: Exact-model RTINGS review identifies the XG27ACS 180Hz variant, describes sharp motion and low input lag, confirms no HDMI 2.1 bandwidth, Type-C DP Alt Mode, ergonomic stand, low contrast and limited HDR.
  6. 6.LG 27GR83Q-B ReviewRTINGS.com · Independent testing · Source checked 2026-09-26 00:00 UTC
    Evidence used on this page
    • Differences Between Sizes and Variants; PC/Console/HDR sections: Exact-model RTINGS review says it tested the only 27-inch 27GR83Q-B, identifies 240Hz/1440p IPS, HDMI 2.1 and VRR, responsive motion, and low-contrast/limited HDR behavior.

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