The Optoma UHD51ALV vs Optoma HD142X comparison shows that these projectors have some important differences and common features. Based on our rating, UHD51ALV has a total rating of 9.6 out of 10 versus 7.3 for HD142X.
Advantages Optoma UHD51ALV over Optoma HD142X
Bring the cinematic 4K UHD experience home with the UHD51ALV
Bigger projection screen size: 34-302 inch vs 30-300 inch
UHD51ALV is HDR-compatible
More USB ports: 3 vs 1
Stereo sound vs mono from integrated speakers
Advantages Optoma HD142X over Optoma UHD51ALV
Lower power consumption, 260 W vs 317 W
Longer lamp life (normal mode): 5000 vs 4000 hours