INTRODUCTION

 

 

 

 

 

 

 

    For many PC enthusiasts, the case is far more than just a metal shell that houses hardware. It is the foundation of a build, influencing airflow, cooling efficiency, noise levels, ease of assembly, and ultimately the overall user experience. As modern components continue to push performance boundaries, a well-designed chassis has become just as important as the hardware it houses. When the conversation turns to cooling and acoustic optimisation, few names command as much respect as Noctua. Over the years, the Austrian company has built a reputation for producing some of the industry's most efficient and quiet cooling solutions, earning the trust of enthusiasts, professionals, and system builders alike. Their distinctive brown-and-beige aesthetic has become instantly recognizable, often serving as a badge of quality for those who prioritize thermal performance and low noise operation above flashy RGB lighting. Bringing together Antec's experience in chassis design and Noctua's renowned cooling philosophy, the Flux Pro Noctua Edition aims to deliver a case tailored for users who value airflow, thermal efficiency, and acoustic refinement.

    Founded in 1986, Antec, Inc. is recognized globally as a pioneer in high-performance computer components and accessories. From power supplies to enclosures and now cutting-edge cooling systems, Antec is committed to delivering reliable, innovative, and well-crafted solutions for gamers, creators, and PC builders worldwide.

    Noctua’s award-winning, premium quality quiet cooling components are internationally renowned for their superb acoustics, industry-leading performance-to-noise efficiency and remarkable longevity. Since its foundation in 2005, the Austrian manufacturer’s engineering-first mindset, history of innovations and relentless pursuit of continuous optimization have become just as iconic as its long-term product support and excellence in customer service. Today, PC enthusiasts and industry clients alike swear by the signature blend of cutting-edge performance, outstanding quietness and ultimate reliability that makes Noctua’s products unique.

    Built around the award-winning Antec Flux Pro chassis, the Noctua Edition enhances the already capable airflow-focused design with six premium Noctua G2-series fans, comprising three NF-A14x25 G2 140mm (1500RPM/91.58CFM/24.8dBA) front intakes, two NF-A12x25 G2 120mm (1800RPM/63.15CFM/22.5dBA) PSU shroud fans for direct GPU cooling, and a rear NF-A14x25 G2 exhaust. According to Noctua, this optimized cooling configuration can reduce noise levels by up to 8dBA while maintaining similar thermal performance. Further refinements include anti-vibration fan mounting options, offset fan speeds to minimize resonance, and a pre-installed NA-FH1 eight-channel PWM fan hub for simplified fan control. The chassis itself supports E-ATX and SSI-EEB motherboards, graphics cards up to 455mm long, PSU's up to 300mm long (470mm without the HDD tray), CPU coolers up to 190mm tall, and radiators up to 420mm in the front and 360mm in the roof, making it suitable for both high-end gaming systems and professional workstations. Completing the package are subtle Noctua-inspired brown accents, premium materials, extensive storage support (4x2.5/3.5", 2x2.5"), and a design philosophy that prioritizes exceptional airflow, acoustic performance, and build flexibility.

 

 

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SPECIFICATIONS AND FEATURES

 

 

 

 

 

 

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PACKAGING AND CONTENTS

 

 

 

 

 

 

The Flux Pro Noctua Edition is shipped inside a plain cardboard box the front of which is taken by a product drawing.

 

 

On the right side we find the product specifications in 9 languages.

 

 

At the rear we find an exposed view of the Flux Pro Noctua Edition full tower.

 

 

Typically, the case is wrapped inside a plastic bag and placed between two thick foam spacers, this time however reinforced with pieces of cardboard.

 

 

Contained inside the box (aside the Flux Pro Noctua Edition) are four NF-A14x25 G2 140mm fans, two NF-A12x25 G2 120mm fans, NA-FH1 magnetic fan hub (already mounted), two aluminum grilles, 5 cable ties, piece of walnut wood (material), NP-KC1 key chain, cardboard box with anti-vibration mount sets (NA-AV4) and fan screws, plastic box with motherboard mounting screws, rear PSU mount, installation manual, PSU installation guide and the user manual.

 

 

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THE FLUX PRO NOCTUA EDITION EXTERIOR

 

 

 

 

 

 

Measuring 545mm in height, 530mm in depth and 245mm in width the 12.46Kg heavy Flux Pro Noctua Edition is a full tower model.

 

 

Most of the right side is taken by a tempered side glass panel (clip mechanism).

 

 

The case also has a CPU and GPU temperature display on the lower right and the Noctua name on the other side.

 

 

Most of the fascia is perforated and features walnut wood all around.

 

 

The Antec and Noctua names are engraved on the lower right.

 

 

You can remove the fascia to access the fan/radiator area just by pulling it.

 

 

Antec has placed the I/O at the top and so here we find the power on/off and reset buttons, 3.5mm port, two USB-A 3.0 ports (5Gbit/s), USB-C 3.1 port (10Gbit/s) and the temperature display button.

 

 

The top is also held in place by a clip design so you can remove it by pulling it to reveal the fan/radiator mount.

 

 

Moving at the rear we find an empty 120/140mm fan area, 8 PCI expansion slots and the PSU area (by default the Flux Pro Noctua Edition comes with a closed bracket that powers the PSU internally).

 

 

Almost the entire base of the case is taken by a removable dust filter.

 

 

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THE FLUX PRO NOCTUA EDITION INTERIOR

 

 

 

 

 

 

Interior space is ample as you can see from the above picture with enough room even for E-ATX and SSI-EEB sized motherboards.

 

 

At the front we find enough room for up to three 120/140mm fans and/or a 360/420mm 90mm thick radiator.

 

 

There are two empty areas just over the PSU area where you can either use the bundled grilles or the two 120mm NF-12x25 G2 fans.

 

 

The right grill is easy to remove in order to access the PSU and disk drive area, just pull it upwards.

 

 

Turning the case around we find the 8-way magnetically attached fan hub, two vertical 2.5" drive trays, two 3.5/2.5" drive cages, PSU area and the removable bottom drive cage (1x3.5/2.5" and 1x2.5").

 

 

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BUILDING THE SYSTEM

 

 

 

 

 

 

As always, the purpose of this section is not to build a functional system but rather to showcase what you can expect from the case at hand in terms of interior space.

Needless to say, you will First need to attach all 6 bundled fans either with the anti-vibration mounts (like I did) or the fan screws.

 

 

A full sized ATX motherboard is nothing for the Flux Pro Noctua Edition (even an E-ATX model would leave room for the rubber grommets around it).

 

 

With enough space for 190mm tall CPU air coolers there's no limit to what you can mount here.

 

 

Worth pointing out is that the Flux Pro Noctua Edition can accommodate up to one NL-LC1-42 420mm AIO Liquid Cooler (either top or front).

 

 

For demanding users, the ability to add a 360/420mm long and 90mm thick radiator at the front will surely stand out.

 

 

There's virtually no limit as to what graphics card one may use with the Flux Pro Noctua Edition (455mm max).

 

 

We also need to speak about the PSU area which has plenty of space even for the PRIME TX-1600 Noctua Edition by Seasonic.

 

 

Just remember to replace the default rear PSU mount with the bundled one (unless for some reason you want the modular ports facing backwards).

 

 

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NOISE LEVEL TEST

 

 

 

 

 

 

After giving it much thought we decided on performing noise tests with each PC Case we receive by placing our ExTech HD600 vertically on top of each case to measure the noise levels emanating from the pre-installed fans at both 50% and 100% with the help of a fan controller (if the case doesn't have one, we use our own).

 

 

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CONCLUSION

 

 

 

 

 

 

 

    The Flux Pro Noctua Edition takes an already excellent case and makes it even better. Cooling performance is outstanding, acoustic performance is among the best we've seen from a production chassis, and the overall build quality leaves very little room for criticism. Add in Noctua's latest G2 fans, the integrated fan hub and the distinctive Noctua-inspired aesthetics, and the result is a product that feels purpose-built for enthusiasts who value performance and silence above flashy distractions. The unmistakable Noctua color theme will be especially appealing to long-time fans of the Austrian manufacturer, while the spacious interior and flexible layout further enhance its appeal for high-end gaming and workstation builds. The primary drawback is undoubtedly the price, although it may not be enough to push away potential buyers (Noctua fans primarily).

    The Flux Pro Noctua Edition Full Tower was released back in March and currently retails for USD399.95 inside the USA (Amazon.com) and for 416.70Euros inside the EU (Amazon.de), a price tag set significantly higher compared to the plain Flux Pro model. Honestly the Flux Pro Noctua Edition by Antec is among the best full towers to ever reach the lab. Yes, it’s not quite perfect and I do feel that Noctua could had brought something really unique to the market but for now this is it and since it checks most of the boxes the Golden Award is in order.

PROS

- Very Good Build Quality
- CPU & GPU Temperature Display
- Airflow Levels (Mesh Design, 4x140mm / 2x120mm Noctua Fans)
- Can Accommodate 6 Drives (3x2.5/3.5”, 3x2.5”)
- Room For 240/280/360/420mm Radiators
- Interior Space For 190mm Tall CPU Coolers, 300mm Long PSUs, and 455mm Long Graphics Cards
- Rear PSU Cover (PSU Orientation)
- Long Bottom Dust Filters

CONS

- Price (For Some)

 

 

INTRODUCTION

 

 

 

 

 

 

 

 

    Anyone who’s spent time building PCs knows the case sets the tone long before the system ever powers on. It dictates how cables route, how air moves, how easy it is to swap parts, and ultimately how satisfying the whole build process feels. Some cases make you fight them; others quietly get out of the way and let the hardware shine. Over the years, expectations have shifted toward smarter interiors, better thermals, and designs that don’t feel overcomplicated for the sake of it. That’s the environment where Formula V Line introduces the Crystal U9 PA, a new chassis meant to offer a straightforward, modern foundation for a fresh build.

    Formula V Line is a Taiwanese company founded by a group of professionals in 2012. Our main product lines include various computer cases, power supplies and air-cooling systems for computers. Our research and development team can bring your best ideas to life. Formula V Line's mission is to create reliable products with the best price-quality ratio. For more information, visit http://formulav-line.com/

    The Crystal U9 PA continues the series’ dual‑chamber approach, separating the main hardware compartment from the PSU and storage area to keep airflow unobstructed and cable clutter out of sight. It comes with four 120mm Performance ARGB PWM fans pre‑installed and uses curved tempered‑glass panels on the front and side for a clear view of the build. Formula V Line has equipped the U9 PA with removable top and bottom dust filters for easy maintenance. Hardware support is broad, GPUs up to 420mm long, CPU coolers up to 182mm tall, single 360mm on top, and up to E‑ATX size motherboards all fit within the main chamber. Storage is handled by a single 2.5” drive bay, single 3.5” drive mount and as for the PSU chamber, it accommodates standard ATX units. The case is available in black or white, matching the PA variant’s included ARGB fans.

 

 

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SPECIFICATIONS AND FEATURES

 

 

 

 

 

 

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PACKAGING AND CONTENTS

 

 

 

 

 

 

Formula V Line uses a plain cardboard box to ship the Crystal U9 PA the front of which has their logo, product drawing and the main product features.

 

 

The specifications table is printed at the rear of the box.

 

 

Typically, the case is wrapped inside a plastic bag and placed between two foam spacers.

 

 

Along with the Crystal U9 PA inside the box you'll also find 5 cable ties, 3 rubber anti-vibration rings, what seems to be a cable holder, two bags of standoffs and screws and the user manual.

 

 

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THE CRYSTAL U9 PA EXTERIOR

 

 

 

 

 

 

The Crystal U9 PA stands between midi and full towers measuring 484mm in height, 480mm in length and 235mm in width.

 

 

Both the right tempered glass panel and the left steel panel feature clip mechanisms instead of screws.

 

 

Formula V Line has placed their logo on the lower left corner of the right side.

 

 

The I/O is located on the right lower end and it includes two USB-A ports, USB-C port, 3.5mm headphones/microphone port and the on/off button.

 

 

As mentioned in the features list the front is made of curved tempered glass.

 

 

Just like the side panels the top is also kept in place with clips so you just have to pull it upwards to reveal the fan/radiator mounting area.

 

 

Roughly 1/3rd of the left side panel is perforated.

 

 

Moving at the rear we find an 120mm exhaust fan, 7 PCI expansion slots and the PSU area.

 

 

The Crystal U9 PA sits on 4 feet and features a removable dust-filter right under the PSU area.

 

 

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THE CRYSTAL U9 PA INTERIOR

 

 

 

 

 

 

The interior of the Crystal U9 PA is quite spacious and should hold any hardware component.

 

 

With three 120mm ARGB fans pushing air towards the left of the case airflow levels should be substantial.

 

 

The dual chamber cover features room for two more 120mm fans.

 

 

A total of 11 holes are located on the motherboard tray (plus the CPU cutout) and 3 on the dual chamber cover.

 

 

Taking a look on the other side, we find a single aluminum 2.5" drive tray, three cable holders, 3.5" drive mount (at the base of the case, next to the PSU area) and the PSU area.

 

 

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BUILDING THE SYSTEM

 

 

 

 

 

 

As always, the purpose of this section is not to build a functional system but rather to showcase what you can expect from the case at hand in terms of interior space.

Even if you were to mount an 3.5” drive at the front end of the case you’d still have enough room for most (if not all) PSU models in the market today.

 

 

With enough room for even E-ATX sized motherboards space inside the Crystal U9 PA is plenty.

 

 

You can install CPU air coolers up to 182mm in height so again, this should be enough for any model out there.

 

 

Even though you should be able to mount a radiator on the left fan mounting area (which would limit your GPU length) officially you can only mount a single radiator on top (240/360mm).

 

 

With room for up to 420mm long graphics cards you should be able to fit anything inside the Crystal U9 PA.

 

 

The graphics card support bracket wasn’t implemented properly but it does help.

 

 

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NOISE LEVEL TEST

 

 

 

 

 

 

After giving it much thought we decided on performing noise tests with each PC Case we receive by placing our ExTech HD600 vertically on top of each case to measure the noise levels emanating from the pre-installed fans at both 50% and 100% with the help of a fan controller (if the case doesn't have one, we use our own).

 

 

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CONCLUSION

 

 

 

 

 

 

 

    A case like the Crystal U9 PA ultimately wins you over by how it feels once everything is inside it. The clean glass surfaces give it a sharp, modern look without drifting into anything gaudy, and the dual‑chamber layout keeps the interior looking spacious even when the build is fully populated. With the fans tucked behind the curved front panel and the hardware sitting in a wide, open main chamber, noise levels stay pleasantly low during everyday use. Airflow moves smoothly through the case without the harsh turbulence you get from tighter layouts, and the dust filters do their job quietly in the background. Cable management is another strong point, the hidden chamber, generous routing space and several holders make it easy to keep everything tidy without forcing cables into awkward paths. It’s the kind of chassis that looks tidy from every angle, stays cool without sounding like a wind tunnel, and gives high‑end components room to breathe. For builders who want a clean aesthetic, calm acoustics, and a layout that naturally encourages neat wiring, the U9 PA lands in a very comfortable sweet spot.

    Although I was unable to find the Crystal U9 PA anywhere online (USA/EU) Formula V Line has set an MSRP of around USD80/80Euros and well, if that’s how much it ends up costing it will represent great value for money. Looks, spacious interior, low noise levels and a very attractive price tag, everything checks out for our Golden Award.

PROS

- Overall Build Quality
- Curved Tempered Glass Fascia
- 4 Pre Installed 120mm ARGB Fans (Up To 9)
- 240/360mm Radiator Mount
- Interior Space For 182mm Tall CPU Coolers, 200mm Long PSUs, and 420mm Long Graphics Cards
- Top / Bottom Dust Filters
- Available In Black & White Colors

CONS

- Room For Only 2 Drives
- Current Availability