Skip to main content

Comparison

AH700ST vs ZK431ST-B

BenQ AH700STBenQAH700ST
$2,299
Buy at Amazon · $2,299, AH700STCompare 5 retailers
vs
Optoma ZK431ST-BOptomaZK431ST-B
$1,799
Buy at Indoor Golf Outlet · $1,799, ZK431ST-BCompare 2 retailers

When you buy through links on Northcourse, we may earn a commission at no additional cost to you. Read the full affiliate disclosure

A side-by-side look at how the BenQ AH700ST 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 AH700ST and ZK431ST-B

Buy AH700ST

Show all 5 retailers

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

When you buy through links on Northcourse, we may earn a commission at no additional cost to you. Read the full affiliate disclosure

Full specificationsEvery spec for both, line by line

Specifications

The numbers, lined up.

Image

  • Resolution
    AH700ST1080p Full HD
    ZK431ST-B4K UHD (3840×2160); Optoma calls it True 4K UHD and names no chip
  • Lumens
    AH700ST4,000 ANSI
    ZK431ST-B4,100 (ISO 21118)
  • HDR
    AH700STHDR10, HLG
    ZK431ST-B—
  • Color
    AH700ST95% Rec. 709, Golf Mode
    ZK431ST-B—
  • Picture Mode
    AH700ST—
    ZK431ST-BGolf Sim colour mode (preset)
  • Screen Size
    AH700ST—
    ZK431ST-B36–300 in (Optoma's spec table says 30–300, its feature list 36–300; the narrower range is used)

Hardware

  • Light Source
    AH700STLaser, IP5X sealed (20,000 hours)
    ZK431ST-BDuraCore laser (30,000 hours, eco)
  • Throw Ratio
    AH700ST0.69–0.83 (1.2× motorized zoom)
    ZK431ST-B0.496:1 (short throw, fixed)
  • Lens
    AH700ST—
    ZK431ST-BFixed 0.496:1 short-throw lens (no zoom, no lens shift)
  • Keystone
    AH700ST—
    ZK431ST-B±15° with Smart Fit auto-alignment

Performance

  • Input Lag
    AH700ST33.4 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

Software

  • Auto Screen Fit
    AH700STYes (front camera)
    ZK431ST-B—

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 AH700ST 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 AH700ST

  • Cost-Effective Buyer

    Golf-dedicated features at $2,299 — best dollar-per-feature for builders who don't have the GPU to push 4K.

  • Recreational Player

    Set-and-forget polish (Auto Screen Fit, motorized zoom, Golf Mode) without needing a GPU that can drive 4K.

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.

  • Space-Constrained

    0.496:1 puts a 100-inch image up from about 3.6 feet, so it mounts close and stays out of the swing path. That is the tightest throw in the catalog, shared in 4K with the GT3900UHD, UHZ35ST and BenQ LK830ST.

Both fit

  • Family Setup

Build your simulator in two minutes

Five questions. One tailored build with retailer links.

We ask about your budget, your room, and how you’ll use it. We return a complete build — launch monitor, mat, enclosure, projector, software, PC — with the reasoning behind every pick and the alternatives we considered.

Build your simulator