The PS5 can output 4K at 120fps, but you need HDMI 2.1 bandwidth to actually see it — most budget 4K monitors cap at 60Hz over HDMI. Here are the monitors under $400 that deliver true 4K@120 for PS5, plus a couple of portable alternatives if you're willing to trade refresh rate for mobility.
The PS5 outputs 4K at 120fps, but here's the catch most people miss: you need a monitor with HDMI 2.1 bandwidth to actually display that signal. Most cheap 4K screens cap at 60Hz over HDMI, even if they advertise a higher refresh rate over DisplayPort — and the PS5 only has an HDMI output. Under $400, the field narrows to a handful of 28-inch IPS panels that pair 4K resolution with 120Hz+ refresh and proper HDMI 2.1 support.
This guide covers the monitors that actually deliver 4K@120 for PS5 in this price band, plus a couple of portable options for travelers who are willing to accept a 60Hz cap.
HDMI 2.1 is non-negotiable. The PS5's 4K@120 mode requires 48 Gbps of bandwidth, which only HDMI 2.1 provides. A monitor with HDMI 2.0 will cap your PS5 at 4K@60, no matter what its DisplayPort refresh rate says.1
VRR (Variable Refresh Rate) smooths frame pacing in games that don't hold a locked 120fps. Both FreeSync and G-Sync compatibility help here — the PS5 supports VRR natively.1
IPS panels give the color accuracy and viewing-angle balance that PS5 games benefit from, especially in story-driven titles with rich HDR lighting.
The M28U is the monitor most people should buy for a PS5 under $400. It's a 28-inch 4K IPS panel running at 144Hz with HDMI 2.1 and VRR support.1 The 144Hz refresh is more than the PS5 needs (120fps max), but the headroom means the monitor won't be a bottleneck, and it's equally good if you ever plug in a PC.
What makes it the top pick is the price-to-feature ratio: you get the full 4K@120 PS5 experience — HDMI 2.1, VRR, IPS color — at a budget price point that most competitors in this size class can't match. It's widely cited as the value benchmark for PS5 4K@120 gaming.1
Verdict: Buy this first. If it's in stock and under $400, you're done.
The VG28UQL1A matches the M28U on the specs that matter: 28-inch 4K, 144Hz, HDMI 2.1, and both G-Sync and FreeSync compatibility.2 Where it differs is build quality and sync flexibility — the TUF line is designed for competitive play, with a more rugged chassis and broader VRR support across devices.
It typically sits at a slightly higher mid-tier price than the M28U, which is why it's the runner-up rather than the top pick. But if you find it at a similar price, or if you value the durable build and dual G-Sync/FreeSync support, it's a perfectly valid alternative.2
Verdict: Great monitor, slightly pricier. Pick it if the M28U is unavailable or you want the tougher build.
This is a 15.6-inch 4K UHD QLED panel with 600 nits of brightness and 100% AdobeRGB coverage — impressive specs for a portable screen.3 It connects via USB-C and Mini HDMI, making it a genuinely useful travel companion for PS5 gaming on the go.
The caveat is significant, though: it lacks HDMI 2.1 and 120Hz refresh, so your PS5 will cap at 4K@60 on this display.3 That's fine for story games in resolution mode, but you won't get the 120fps high-frame-rate mode that games like Call of Duty or Rocket League support.
Verdict: Best as a travel or secondary screen. Don't buy it as your primary PS5 monitor if 120fps matters to you.
The InnoView is another affordable 4K UHD portable option with HDR support and 100% sRGB coverage, plus dual USB-C ports for connectivity.4 Like the UPERFECT, it lacks 120Hz refresh, so the PS5 caps at 60Hz here as well.4
It's a step down from the UPERFECT on brightness and color gamut, but it's also more affordable. If you just want a compact 4K screen for casual PS5 play in a hotel room or dorm, it does the job.
Verdict: The cheapest way to get 4K on the go with your PS5 — just don't expect 120fps.
Both monitors are 28-inch 4K IPS panels at 144Hz with HDMI 2.1 — the core PS5 4K@120 requirements are identical.1 The differences come down to:
If price is your primary concern, get the M28U. If you want a tougher build or broader sync compatibility, the VG28UQL1A justifies its premium.
Portable monitors like the UPERFECT and InnoView are impressive pieces of hardware, but they're a different category. They trade the 120Hz refresh and HDMI 2.1 bandwidth that PS5 4K@120 requires for portability and compact size.3 They're excellent as secondary or travel screens, but they shouldn't be your main PS5 display if high-frame-rate gaming is a priority.
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