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Comparison

AH500ST vs ZK431ST-B

BenQ AH500STBenQAH500ST
$1,999
Buy at Amazon · $1,999, AH500STCompare 5 retailers
vs
Optoma ZK431ST-BOptomaZK431ST-B
$1,799
Buy at Indoor Golf Outlet · $1,799, ZK431ST-BCompare 2 retailers

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A side-by-side look at how the BenQ AH500ST and Optoma ZK431ST-B compare on specs, accuracy, room requirements, and price. No hype — just the parts of the decision a buyer actually weighs.

Also worth a look

More comparisons with the AH500ST and ZK431ST-B

Buy AH500ST

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Prices confirmed Nov 10, 2026 · we check every retailer daily

Buy ZK431ST-B

Show all 2 retailers

Prices confirmed Nov 10, 2026 · we check every retailer daily

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Full specificationsEvery spec for both, line by line

Specifications

The numbers, lined up.

Image

  • Resolution
    AH500ST1080p Full HD
    ZK431ST-B4K UHD (3840×2160); Optoma calls it True 4K UHD and names no chip
  • Lumens
    AH500ST4,000 ANSI
    ZK431ST-B4,100 (ISO 21118)
  • HDR
    AH500STHDR10, HLG
    ZK431ST-B—
  • Color
    AH500ST83% Rec. 709; Golf picture mode
    ZK431ST-B—
  • Picture Mode
    AH500ST—
    ZK431ST-BGolf Sim colour mode (preset)
  • Screen Size
    AH500ST—
    ZK431ST-B36–300 in (Optoma's spec table says 30–300, its feature list 36–300; the narrower range is used)

Hardware

  • Light Source
    AH500STLaser, IP5X sealed (20,000 hours normal, 38,000 eco)
    ZK431ST-BDuraCore laser (30,000 hours, eco)
  • Throw Ratio
    AH500ST0.499 (fixed, very short)
    ZK431ST-B0.496:1 (short throw, fixed)
  • Lens
    AH500ST—
    ZK431ST-BFixed 0.496:1 short-throw lens (no zoom, no lens shift)
  • Keystone
    AH500ST—
    ZK431ST-B±15° with Smart Fit auto-alignment

Performance

  • Input Lag
    AH500ST33.4 ms (1080p/60Hz); 16.7 ms (1080p/120Hz)
    ZK431ST-B16.8 ms at 4K/60Hz and 8.6 ms at 1080p/120Hz with Enhanced Gaming on (Optoma's page says 16.7 ms at 4K/60; the manual's 16.8 is used); 33.5 ms at 4K/60 with it off. Keystone and four-corner correction are disabled in low-latency mode

Room planner

See each one in your sim room.

The planner draws each unit to scale with your room and your swing: where it mounts, the throw it needs, and whether your shadow crosses the light. Put in your room once, then switch units in the planner to compare.

See the AH500ST in your sim room →See the ZK431ST-B in your sim room →
Persona fitWho each one is better for

Who each one is better for

Honest persona fit, side by side.

Better for AH500ST

  • Cost-Effective Buyer

    Golf-dedicated laser features (Golf Mode, IP5X seal, 4,000 lumens) at $1,999 — strong dollar-per-feature when the room geometry needs the tight throw anyway.

Better for ZK431ST-B

  • Performance Seeker

    4K with published low lag and a dedicated Golf Sim colour preset, so there is a sensible starting point without a calibration session. 4,100 lumens holds up in a room that is not fully blacked out.

  • Family Setup

    Bright enough for a room with ambient light and fast enough to game on, which is what a shared room actually gets used for between rounds.

Both fit

  • Space-Constrained

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