GT2100HDR vs GT2400HDR

The GT2400HDR is Optoma's successor to the GT2100HDR — same DLP form factor, same 4,200-lumen laser short-throw role in a sim build, same persona fit. The honest difference is a slightly refined 0.496:1 lens (vs 0.50:1) and current-model retailer availability. The GT2100HDR is being phased out — B&H discontinued it in May 2026 — and its closeout pricing has behaved the way closeouts do late in the cycle: the early $1,099 discount evaporated as stock thinned, and remaining inventory at major retailers now sells at $1,299, the same as the GT2400HDR.

At price parity the decision resolves itself. The GT2400HDR is the current model with the longer support window ahead of it; the GT2100HDR is the same hardware with its support clock already running down. Paying the same for the older unit only makes sense if a specific listing undercuts the GT2400HDR meaningfully — and our daily price tracking shows those windows do still open on residual stock. If you catch one, it's a real saving on a projector you'd otherwise buy anyway. If you don't, stop hunting.

Both projectors are budget-tier picks. Neither is the right choice if image quality is what you came for — 1080p, DLP. They're the right choice when you need bright enough for a garage at around $1,300, want laser longevity (set-and-forget), and don't have the budget for 4K UHD short-throw.