I've heard others say that unless it has FALD, anything claiming HDR is basically lying. And I can't speak to how accurate that is, but this monitor has HDR600 which requires 10bit color depth and local dimming.
I think it looks better with it enabled than without, seems like darker darks / richer color, but I'm not an HDR or monitor enthusiast, so check better sources before making a purchase.
There are so few thing on windows actually utilize HDR properly. The few I come up with are some games from UBI (Tom Clancy's series) and forza horizon 5. You get far better experience when play them with HDR. The others are either nonadjustable too dim, too bright or have a totally incorrect light curve.
I think it looks better with it enabled than without, seems like darker darks / richer color, but I'm not an HDR or monitor enthusiast, so check better sources before making a purchase.