NZXT’s popular H6 midsize tower case is back with curved glass for 2026 and a new moniker—“RGB+” —replacing the “Flow RGB” of its 2024 model. Let’s get the product’s biggest confusion out of the way: “RGB+” versus “RGB Plus.” That “+” symbol might grab more attention than the written word, but it’s also an operator for search engines and doesn’t resolve properly in URLs. So that means NZXT also calls this the “H6 RGB Plus” and “H6 RGB+ (2026)” in its web documentation and elsewhere. (Us, too, with the "Plus" in our headline here, given the vagaries of search.)
That aside, this familiar favorite comes to us at a much higher MSRP than its 2024 version ($199.99, versus $134.99), smooths out the former’s angular design with some slick new curves, and provides a heap more fans, controlled by an installed hub and proprietary NZXT software. Reverse-blade fans, back-connect motherboard support, and amped-up airflow help justify the higher price, but you’ll want to dig into the nuances to see whether the extra spend is worth the install limitations and trade-offs. On the whole, though, it’s a very competently executed new minitower chassis, however you slice it.
Though the curves at the vertical panel edges are the biggest change to the revised case’s shape, the H6 RGB+ also gains a bunch more vent holes and a whopping four more fans. The right side panel’s profuse perforations are shaped into stripes and the name “NZXT” embossed and ventilated. And the curve between that panel and the adjacent 45-degree-angled fan panel represents the union between two parts that were separate on the 2024 version of the case.
The front connectors remain the same: two USB Type-A (Gen 1) and one USB Type-C (Gen 2x2) ports, and a four-pole headset jack that also works with stereo headphones. The new power button is larger and surrounded by an inward-curved bezel; the curve affords a better view of the illuminated power indicator ring.
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The H6 RGB+ has just one removable fan filter. It covers the bottom air intake. The other intake fans rely solely on the very fine size of their cover panel’s perforations to capture incoming dust. The filter is removable from the side with the case sitting upright, but I had slight difficulty getting its leading edge to align with the three catch tabs on the case’s underside while reinserting it. Flipping the case on its side made it a lot easier.
Also, note in the image below that the middle screw holes in the fan mounts have no screws in them. That’s because the three intake fan-blade units here share a single 120mm-by-360mm frame.
A traditional inset PCIe slot panel lets PC builders drop graphics and other expansion cards straight in without having to finagle around obstacles, though it does reduce the case's interior space from 16.2 to 15.6 inches. NZXT rates card clearance just short of that, at 390mm. Almost any modern card should fit just fine in here.
From this angle, you can also see that the power supply bay is directly behind the top of the motherboard, and that the back of the top panel has a tab you pull up to remove it. Look closer, and you might note that NZXT uses reverse-curve blades on all six of the intake fans (three side, three bottom) to conceal their motor frames on the side that isn’t showing. That’s a subtle touch well worth noting. The only fan here in standard orientation is the rear (exhaust) unit.
A group of access holes punched for an ATX motherboard’s perimeter allows the H6 RGB+ to support concealed motherboard headers for Asus BTF, Gigabyte Stealth, and MSI Project Zero reverse-connector boards. Additional holes above, below, and in front of the motherboard are designed to pass cables to the headers of standard boards.
Designed with a height-adjustment screw at the bottom and a damping pad on top, an L-shaped miniature card brace that protrudes from the front of the motherboard tray limits the maximum motherboard depth to around 10.8 inches when installed.
That might seem significant, since the case isn’t rated as Extended ATX. Given that most retail “EATX” motherboards are only 10.5 to 10. 7 inches deep, that removable card brace could be the only thing to prevent a determined builder from installing one here. Just know that since the forward-facing portion of that brace stands around 4mm proud of the tray, boards with deeply offset back-bracing/stiffening panels, like my 10.5-inch-deep Asrock X870E Taichi, won’t sit all the way down on the front column of standoffs. (Conversely, that motherboard’s backplate-free “Lite” version fits perfectly.) Proceed with caution if you plan to install anything bigger than regular ATX.
Also not on NZXT’s list is the case’s 280mm-format radiator capability, but you can see the extra row of fan mounts at 140mm spacing right along those of the rated 120mm spacing. With the H6 RGB+ having ample room (more than 65mm) between the top of the motherboard and the top radiator mount, most closed-loop coolers of typical 52mm-to-54mm thickness fit easily within the 410mm length of the panel’s interior.
One place you won’t be putting a radiator is behind the front/side fan assembly. There’s simply no space above or below the fans for the end caps of the radiator, which are necessary to hold fittings on one end and to redirect coolant at the other.
Slide tabs on the back panel hold the H6 RGB+’s drive cage between its power supply shelf and its bottom panel. Secured to those tabs via a single knurled screw, the cage can hold a single 3.5-inch drive on its inner portion and two 2.5-inch drives on its outer portion.
Behind the removable drive cage is NZXT’s Control Hub Lite. This module connects NZXT’s proprietary fans to the company’s own CAM software through an internal USB 2.0 motherboard header cable. Drawing current from our power supply’s SATA drive power cable, it also appears to add an ARGB input to enable motherboard ARGB lighting pass-through, though the case does not include an extension cable to reach any of those motherboard headers.
The H6 RGB+ includes a giant folded instruction sheet and a bunch of hardware:
10 zip ties
Four combo-head power supply screws
A 6.5mm standoff packed with a Phillips-drive standoff socket
14 #6-32 screws for motherboard and 3.5-inch drive mounting
Eight M3 screws for 2.5-inch drive mounting
A big bag of 40 plastic-threading screws for mounting fans
You also get four fan brackets with screws. The fan brackets adapt the single-frame opening of the side set of fans to hold three separate 120mm fans, should you want to swap 'em out.
The H6 RGB+ connects to our motherboard through a combined F_PANEL button and indicator LED group, HD Audio for the front-panel headset jack, a USB 3.2 Gen 1-compatible cable for its two Type-A ports, and a Gen 2x2 cable for its Type-C port. The Control Hub Lite hub I mentioned earlier connects to one of our board’s USB 2.0 headers, and the same controller’s power cable connects directly to our power supply.
As for the test build I did? Everything fit as though it were designed specifically for our test hardware. I’ve no worries whether it might fit yours, too, beyond the casual observation that a card brace that sits 10.9 inches from the PCIe slot panel won’t be useful for bracing a card that’s less than 10.9 inches long.
The H6 RGB+ Control Hub Lite defaults to white mode, but I configured it to display multiple colors for the “finished product” photo here...
NZXT’s CAM software offers far more settings than we’d need for a basic test, including individual fan-speed and fan-color settings. Fortunately for us, the software asked if we wanted to apply our setting to all fans when we manually configured its slope to full speed on one. That’s what I need to do for the tests we run, so that was easy.
I pitted the H6 RGB+ against our five most recent cases of similar dual-chamber design to see if it could outperform these, using the following hardware. (It’s our standard component test set for ATX cases.)
A two-way battle for first place between NZXT’s H6 RGB+ and its sibling H9 Flow RGB seems like the best kind of fight for NZXT to have in CPU temperatures.
Things get even better with voltage-regulator cooling, where the H6 RGB+ takes one of the biggest leads I’ve seen to date in a comparison set like this. While the case does fall back to mid-pack in our GPU-temperature reading, its voltage-regulator reading is large enough to make it an overall winner.
And now for the reason the H6 RGB+ cooled so well: Its powerful fans move a lot of air. And, thus, are noisy at the full-speed setting for which we’ve configured all compared cases.
Final Thoughts
(Credit: Thomas Soderstrom)
NZXT H6 RGB+
- 5.0 - Exemplary: Near perfection, ground-breaking
- 4.5 - Outstanding: Best in class, acts as a benchmark for measuring competitors
- 4.0 - Excellent: A performance, feature, or value leader in its class, with few shortfalls
- 3.5 - Good: Does what the product should do, and does so better than many competitors
- 3.0 - Average: Does what the product should do, and sits in the middle of the pack
- 2.5 - Fair: We have some reservations, buy with caution
- 2.0 - Subpar: We do not recommend, buy with extreme caution
- 1.5 - Poor: Do not buy this product
- 1.0 - Dismal: Don't even think about buying this product
Read Our Editorial Mission Statement and Testing Methodologies.
The H6 RGB+ is as classic a case of trade-offs as you’ll find in an ATX chassis. Let’s say you need maximum airflow, care enough about aesthetics for subtle details like reverse-blade fans to give you a thrill, and would appreciate not having to run wires or configure an army of fans. Great. But you’ll need to be willing to tolerate the peak-airflow whoosh a big battery of fans can generate.
To an extent, that’s a little unfair to NZXT: Testing this case with its generous seven-fan loadout when other cases might have just four or three installed puts it behind the 8-ball, in terms of acoustics, from the get-go. But think of it as a max-airflow, minimum-fuss solution, if that is exactly what you are after. It’s hard to argue with its thermal numbers, and our test build, done with our stock testing parts, went flawlessly, resulting in a clean-looking, cool-running, high-visibility rig that a first-timer could pull off.
About Our Expert
Years back, when a small website called out for product-review editors. I leapt at the opportunity: I’d just wrapped up a four-year stint as a systems supplier. That experience provided the credentials I’d need for the transition from industry supplier to industry observer. For one thing, I’d been the first source for an exposé on capacitor plague (“Got Juice?”) at EDN.
By that time, I’d already self-published some guidelines on hardcore PC stuff: pin-modifying processors to defeat compatibility checks and overclock non-overclockable systems. I saw a chance to get paid for my knowledge, and have since written more than a thousand pieces (many of them for the seminal tech site Tom's Hardware) before finding my latest opportunity: with PCMag.
System building. I've been known to take pictures of “wrong way” installations to help builders understand the difference.
PC overclocking, with an emphasis on user ease and component longevity
Motherboards, their infinite nuances and complexities
PC memory, its many variations, and how to configure and understand it
PC cases and PC cooling. The concepts may seem simple, but I help uncover the hidden problems.
Having a test system or two with modern hardware at hand means rarely needing to upgrade my office PC. My old reliable Intel-based workhorse desktop stands at the 6th Generation Core level with a 512GB SSD, 32GB of RAM, and gobs of external storage.
My trusty 3rd Gen Asus Zenbook Pro only comes out for remote conferences (not many of those in the past few years, alas), and even my Samsung Galaxy smartphone is a lower-end model that I bought to replace an old LG unit. Though my day-to-day work consumes the majority of my interest in tech, I've outfitted my home, in recent years, with a whole host of smart TVs.
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