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Updated September 2026: Every price, spec and stock status below re-verified against Arzopa’s, InnoView’s, HP’s, ViewSonic’s and ASUS’s current product pages, plus PCWorld’s current portable monitor rankings.
Prices are approximate, current as of publication, and change frequently — confirm the latest price with the retailer before buying.
Every spec and price below comes from each maker’s own current product page, PCWorld’s published testing, or another named review.
If you just want the most screen for the least money, buy the InnoView 15.6-inch Portable Monitor at $59.99. It delivers more pixels per dollar than any other screen in this group, full stop. Pay more only for a specific reason: the Arzopa Z1FC’s 144Hz panel if you notice motion smoothness, the HP Series 5 Pro 514pn’s sharper 2560×1600 panel if you stare at dense text all day, the ViewSonic VX1655-4K-OLED if color accuracy is your job, or the ASUS ZenScreen MB27ACF if you want a full 27-inch screen that still moves between rooms. Five current portable monitors, $59.99 to $499.99, priced out by the pixel.
A portable monitor is a slab usually under two pounds that borrows power and video from one USB-C cable and turns a single laptop into two screens. Dorm room, coffee shop, the far end of a kitchen table — it works anywhere there’s an outlet or a decent laptop battery. If the laptop itself is still an open question, our guide to picking a student’s main machine covers that first.
What a Dollar Buys in Pixels, Screen by Screen
Every price and resolution below is what each maker’s own current listing shows, cross-checked against PCWorld’s published measurements for the models PCWorld has reviewed outright. Two numbers do the real work here: megapixels per $100 spent, which tells you how much raw screen you’re buying, and price per diagonal inch, which tells you what an inch of that screen actually costs.
| Monitor | Price | Size | Resolution | Refresh | MP per $100 | $ per inch |
|---|---|---|---|---|---|---|
| InnoView 15.6″ | $59.99 | 15.6″ | 1920×1080 | 60Hz | 3.46 | $3.85 |
| Arzopa Z1FC | $96.99 | 16.1″ | 1920×1080 | 144Hz | 2.14 | $6.02 |
| ViewSonic VX1655-4K-OLED | $499.99 | 15.6″ | 3840×2160 | 60Hz | 1.66 | $32.05 |
| HP Series 5 Pro 514pn | $339 | 14.3″ | 2560×1600 | 75Hz | 1.21 | $23.71 |
| ASUS ZenScreen MB27ACF | $449 | 27″ | 2560×1440 | 100Hz | 0.82 | $16.63 |
InnoView wins by a wide margin. 1920×1080 for $59.99 is 2.07 megapixels, and 2.07 divided by 59.99 times 100 comes out to 3.46 megapixels per $100 — nearly three times the Arzopa’s rate, on the exact same panel size and resolution. The Arzopa costs $37 more for identical pixels because you’re paying for 144Hz, not more screen.
The surprise sits farther down the table. The ViewSonic OLED beats the HP on pixels per dollar — 1.66 versus 1.21 — despite costing $161 more, because its 3840×2160 panel packs more than twice the HP’s 4.1 megapixels into only 1.5 times the price. If pixel count were the only question, the $500 screen out-values the $339 one. It isn’t the only question, though: the HP’s 16:10 shape is built for documents and the ViewSonic’s OLED contrast is built for color work, and neither purchase is really about raw pixel count.
The ASUS is the odd one out on this table on purpose. At $16.63 an inch it isn’t cheap per pixel — 0.82 megapixels per $100 is the lowest number here — but nothing else in this group is 27 inches. You’re not buying pixel density from the ASUS. You’re buying a desk-sized screen that folds into a bag.
Arzopa’s Real Size and ASUS’s Real Refresh Rate, Checked Against Each Maker’s Page
Two numbers in this category get repeated by habit more than by checking. Arzopa’s own global site lists the Z1FC’s screen at 16.1 inches diagonal — not the 15.6 inches that’s the default assumption for nearly every other screen in this class, InnoView and ViewSonic included. That extra half-inch is the reason the Z1FC’s price-per-inch above lands at $6.02 rather than a tighter number. And ASUS’s own product page puts the ZenScreen MB27ACF’s refresh rate at 100Hz, not the 60Hz a 27-inch QHD panel this size would typically ship with — confirmed independently by PCWorld’s review and by the spec sheet on the current retail listing.
| What gets assumed | What the maker’s current page shows | Confirmed by |
|---|---|---|
| Arzopa Z1FC screen size: 15.6″ (the class default) | 16.1″ diagonal | Arzopa’s own listing; PCWorld’s review |
| ASUS ZenScreen MB27ACF refresh: 60Hz (typical for this size and resolution) | 100Hz | ASUS’s own listing; PCWorld’s review |
| PCWorld’s rankings for this category | Same five monitors still hold the budget, under-$100, mid-range, 4K and 27-inch slots | PCWorld’s current portable monitor rankings |
None of the five turned up in a federal recall database as of this writing, and none has been discontinued — all five ship today from the maker or a major retailer, at the prices in the table above.
The InnoView Is the Screen Most People Should Actually Buy
PCWorld’s under-$100 pick earns the raw-value crown in the table above, and it does it without cutting the corner that usually explains a $60 price: the HDMI port is full-size, not the mini or micro connector some slimmer models use. That means a game console or an older laptop plugs in with a cable you probably already own.
The savings come from somewhere else — a standard 60Hz panel and plainer color than anything else here. Buy it if the price of entry decides this purchase. Skip it if you’ll actually notice motion smoothness — the Arzopa’s 144Hz costs $37 more and feels like a different class of screen.
The Arzopa Costs $37 More for One Real Upgrade: Smoothness
Same resolution as the InnoView, same 1080p panel underneath, but Arzopa’s Z1FC runs at 144Hz — which makes scrolling feel liquid and casual gaming legitimately pleasant on a screen that still costs less than a textbook. At 1.7 pounds with dual USB-C plus mini-HDMI, it connects to laptops, consoles and phones alike, though the mini-HDMI means an extra adapter cable for anything that only outputs full-size HDMI.
Its limits are ordinary ones: 1080p across 16.1 inches is fine-not-crisp for small text, and the kickstand cover adds a little bulk to a slim backpack sleeve. Buy it if you want one dependable second screen that handles everything from spreadsheets to games. Skip it if your day is dense documents — the HP’s sharper panel is the better tool for that.
The ViewSonic Is the Only Screen Here Buying Image Quality, Not Pixels
For photo and video work, the ViewSonic VX1655-4K-OLED is the one screen in this group whose image quality is the actual product: a 15.6-inch OLED panel at 3840×2160, with the deep blacks and saturated color the technology is known for, connected over dual 60W USB-C or mini-HDMI 2.0. At $499.99 it costs more than an InnoView plus an Arzopa plus dinner.
If you’re ranking by value alone, the ViewSonic is the loser here — worst dollars-per-inch in the group at $32.05, and the only screen where the money is going almost entirely toward image quality rather than raw pixels or screen size. Buy it if you edit photo or video for money. Skip it if you don’t — OLED’s advantages are wasted on email and spreadsheets.
The HP Is the Document Screen, and the Priciest Pixel in the Group
HP’s mid-range pick takes a different route to value. Its 14.3-inch panel runs 2560×1600 — a 16:10 aspect ratio with meaningfully more vertical room for pages, code and spreadsheets — at a smooth 75Hz, in a 1.4-pound package. Text at this density is genuinely crisp in a way neither 1080p panel above can match.
The tradeoff is real: it’s USB-C only, with no HDMI port at all, so older HDMI-out laptops and any game console need not apply. At $339, it also posts the lowest megapixels-per-$100 of any screen in the group except the ASUS. That’s the sharpness tax. Buy it if documents are your day job and your laptop speaks USB-C. Skip it if you ever plan to plug in a console — there’s no port for it.
The ASUS Is a Desk Monitor That Happens to Fold Into a Bag
ASUS’s entry stretches the category: a full 27-inch 1440p display with a carry handle and a 70-watt USB-C power-delivery port that charges a laptop while it drives the screen, plus a 100Hz refresh rate that’s genuinely fast for a screen this size. It’s “portable” the way a briefcase is portable — house to house, room to room — not backpack portable, and at roughly 6.5 pounds it’s heavier than the other four monitors here combined.
Buy it if you want one screen covering two or three workspots in the same life. Skip it if “portable” means it travels in a bag — at 27 inches and 6.5 pounds, it doesn’t. If a screen like this ends up permanently parked on one desk anyway, our guide to picking a home-office monitor resolution will tell you whether 1440p is the right call for your desk distance.
The Screen to Buy for Each Kind of Desk
Most people should buy the InnoView and stop reading here — it wins on value by a wide margin, and it’s the same panel and resolution as the Arzopa for $37 less. Pay the $37 if 144Hz actually matters to how you use a screen: gaming, fast scrolling, video.
Pay for the HP only if your job is dense documents and your laptop has USB-C — it has no HDMI port at all. Pay for the ViewSonic only if color accuracy on the road is worth $500 to you; it’s the worst dollar-per-inch in this group otherwise. And buy the ASUS only if “portable” means between rooms, not in a backpack — at 6.5 pounds, it’s heavier than the InnoView, Arzopa, HP and ViewSonic put together.
Rounding out a remote-work setup? Our webcam comparison covers the camera half of the desk, and more screen-and-setup guides live in Tech & Electronics.
Questions Worth Settling Before You Buy One
Does a portable monitor need its own power adapter?
Usually not. Most draw power and video through one USB-C cable from the laptop, which costs some battery life — expect noticeably faster drain. Brighter panels, 4K models and the 27-inch ASUS work best with their own USB-C power brick attached instead.
Can I plug a portable monitor into a game console or phone?
If it has the right port, yes. Consoles need HDMI in some form — the InnoView’s full-size port is the friendliest, the Arzopa’s mini-HDMI works with an inexpensive adapter cable — while recent phones and tablets that output video over USB-C can drive most of these screens directly. The USB-C-only HP is the one to check carefully; it has no HDMI input at all.
Is 1080p sharp enough at 15 or 16 inches?
For side-by-side documents, browsing and video at arm’s length, yes — the pixel density matches a typical budget laptop screen. Where 1080p shows its limits is small text during long editing sessions, which is the case the HP’s 2560×1600 panel is built for.
Refresh rate or resolution — which matters more for a second screen?
Match the spec to the hours you’ll actually spend. If your screen time is scrolling, notes and games, the Arzopa’s 144Hz does more for comfort than extra pixels would. If it’s reading and writing dense text, resolution wins and refresh barely registers. Paying for both is how a $60 purchase becomes a $500 one.
