ViewSonic ViewBoard ID1655 15.6" 2025

A portable touchscreen that's great at being portable and terrible at being a screen. If you need touch on the go, it works. If you need a good monitor, run.

The performance numbers here are a bit of a gut punch. A 14ms response time puts this thing in the 2nd percentile of all portable monitors we've tested. That's not just bad for gaming, it's bad for anything with motion. Scrolling through documents feels smeary, and dragging windows around has a visible trail. The 60Hz refresh rate is fine for office work, but combined with that response time, even basic productivity feels sluggish. The touchscreen itself is responsive enough, which is the one saving grace. The 10-point touch works well with the included stylus, and Windows recognizes it instantly over USB-C. But the panel underneath that touch layer is doing the heavy lifting, and it's struggling.

The ID1655's top competitors in our database are all gaming monitors like the ASUS ROG Strix XG27UCDMG and the LG UltraGear 27GX790A-B, which feels a bit like comparing a folding chair to a La-Z-Boy. Those are 27-inch OLED panels with 240Hz refresh rates and color accuracy that would make this ViewSonic weep. But they're also not portable and they don't have touchscreens. The real comparison is against other portable monitors, and there the ID1655's 96th percentile compactness is genuinely impressive. The problem is that compactness is the only category where it doesn't rank near the bottom. The display quality sits in the 7th percentile, color in the 1st, and performance in the 2nd. You're trading every measurable quality metric for the ability to fit it in a laptop bag.

At around $270 USD, this is a tough sell. You're paying a premium for the touchscreen and the ViewSonic ViewBoard branding, but you're getting a panel that would feel dated in a budget laptop from a decade ago. If you absolutely need a portable touchscreen for teaching or presentations, the ID1655 is one of the few options out there. But if you can live without touch, there are portable monitors with IPS panels and better brightness for less money. The value proposition only works if touch is non-negotiable.

The ViewSonic ID1655 is a portable touchscreen monitor that nails the 'portable' part and fumbles almost everything else. It's a 15.6 inch 1080p panel that's absurdly compact, ranking in the 96th percentile for portability in our database. But that compactness comes at a cost, and the cost is basically every other spec that matters. This is a TN panel with 250 nits of brightness, 6-bit color, and a 14ms response time. Those numbers are rough even by 2015 standards. If you need a touchscreen you can toss in a bag for presentations or light teaching work, it does that job. If you want a monitor that looks good while doing it, keep scrolling.

If you're looking for a portable monitor for photo editing, video work, or anything where color accuracy matters, this isn't it. The 6-bit TN panel with 250 nits of brightness is a non-starter for creative work. Go grab an IPS portable monitor instead. And if you're a gamer, don't even think about it. The 14ms response time and 60Hz refresh rate put this in the bottom 2% of monitors we've tested. Get a proper gaming panel or just use your laptop screen.

The ViewSonic ID1655 is a one-trick pony, and that trick is being a portable touchscreen. If you're a teacher who needs to mark up documents on the go, or a presenter who wants to draw on slides from a tablet-sized display, this works. The USB-C single-cable setup is genuinely convenient, and the included stylus is a nice touch. But for anyone else, this is a hard pass. The TN panel, the dim screen, the sluggish response time, the washed-out colors. It's a list of compromises that's hard to justify at this price. Buy it for touch and portability. Buy literally anything else for image quality.