Up for review is the Octant LC360 ARGB BK AIO liquid cooler from XASTRA, a rising PC brand based in Shenzhen, China, founded by PC DIY and gaming enthusiasts. Living up to its name, the Octant LC360 ARGB catches the eye with a customizable 4-inch 480p display and a sleek single-frame triple 120 mm fan setup.
Disclosure: XASTRA provided the Octant LC360 ARGB BK AIO for this review, and as always, the opinions and benchmark results shared are entirely our own.
Technical Specifications
The Octant LC360 ARGB BK AIO is a liquid cooler with a 360 mm size radiator. It also sports a single-frame triple 120 mm FDB fan that could spin up to 2000 RPM. As for the pump, it features a ceramic bearing, with a speed of up to 3000 RPM.
| Cooler | |
|---|---|
| Compatibility | Intel LGA 1700, 1851; AMD AM4, AM5 |
| TDP | N/A |
| Type | Liquid cooler |
| Material | Aluminum, copper |
| Fan | |
| Size | 3x 120 mm |
| Speed | 2000 RPM (±10%) |
| Noise | ≤ 34.5 dBA |
| Airflow | 71 CFM |
| Dimensions | |
| Length | 394 mm |
| Width | 120 mm |
| Height | 27 mm |
| Weight | 1036 g |
Packaging and Accessories
The Octant LC360 ARGB BK arrives in a molded pulp packaging.
Scope of delivery are as follows:
- XASTRA Octant LC360 ARGB BK liquid cooler
- Intel mounting kit
- AMD mounting kit
- Cable combs
- Documentation
The thermal interface material and screwdriver aren’t included, so make sure you have them on hand before installation.
Design, Build and Connectivity
The Octant LC360 ARGB BK is a stylish AIO liquid cooler with a distinct gamer-focused design while still avoiding being too flashy. It features a 394 mm radiator, plus about 14–20 mm of extra length at each end. On that note, make sure your case has enough clearance to fit the actual dimensions.
According to XASTRA, the LC360’s pump features a ceramic bearing capable of reaching 3000 RPM. Heat transfer material is an oxygen-free copper cold plate. Nothing flashy here, just a straightforward design without the usual mirror-finish designs associated with high-end coolers.
The Octant LC360 features a single-frame 360 mm fan array design, making installation and maintenance effortless while also improving cable management. The fans spin at around 2000 RPM max and includes rubber dampeners to minimize vibrations. This fan array also supports ARGB lighting.
Connectivity options include two 4-pin PWM cables, a USB 2.0 cable for the magnetic display, and 3-pin ARGB cables. These flat cables are long enough to be routed easily on most motherboards and cases.
Installation and Clearance
Installing the Octant LC360 ARGB BK is a breeze, especially for AMD systems, thanks to its use of the stock AM4/AM5 backplate. Simply screw in the stand-offs, lock the bracket onto the pump, and tighten everything for a secure fit.
The Octant LC360 has a clean, simple look that’s perfect for a gaming PC, with just enough flair to draw all the attention to the LCD screen.
Software
XASTRA offers its own software for the LC360 called Display. It’s a straightforward, no-nonsense tool with separate tiles for each setting you need to customize the display. I like that it comes with plenty of themes, color options, layouts, and even replacement fonts to use.
The XASTRA Display also provides system telemetry features and of course, lets you adjust the screen’s orientation.
Temperature
To see how the Octant LC360 ARGB BK handles real thermal loads, we ran it against an AMD Ryzen 9 7900X across three power profiles (65 W, 105 W, and 170 W) using OCCT, testing at 25%, 50%, 75%, and 100% fan speeds. The pump was kept running at full speed (around 3000 RPM) throughout the tests to isolate the fan speed as the main variable.
Results were consistent across the board. At 65 W, temps stayed in the high-40s to low-50s°C range regardless of fan speed, showing the radiator has more than enough headroom for lighter loads. At 105 W, temps hovered in the low-to-mid 60s °C, with only marginal gains from ramping fans past 50%. The real stress test came at 170 W, where fan speed made a bigger difference, temps dropped from 72.16 °C at 25% down to 67.42 °C at 100%, a solid 4-5°C swing that shows the fans earning their keep under heavier loads.
Noise
We measured noise output at the same four fan speeds using a sound level meter, tracking both dBA and RPM to get a clear picture of how the fan curve translates to real-world audibility.
| Sound Level Meter | Noise | ||
|---|---|---|
| PWM (%) | Noise (dBA) | Speed (RPM) |
| 25 | 33 | 755 |
| 50 | 35.2 | 1320 |
| 75 | 42.7 | 1757 |
| 100 | 47.1 | 2083 |
At 25% PWM (755 RPM), the Octant LC360 ARGB BK is essentially inaudible over normal case noise at 33 dBA. Bumping up to 50% PWM (1320 RPM) only adds about 2.2 dBA, landing at 35.2 dBA, which is still comfortably quiet for most environments. This 25-50% range is the sweet spot, delivering solid cooling performance (see Temperature section) without any noticeable noise penalty.
Past that point, things escalate quickly. At 75% PWM (1757 RPM), noise jumps to 42.7 dBA, a noticeable increase that’s hard to ignore. Push it to 100% (2083 RPM) and it hits 47.1 dBA, loud enough to be distracting during normal use.
For most gamers, running the fans in that 25-50% range hits the ideal balance of quiet operation and solid cooling, only cranking things up to 75% or higher during actual stress-testing or heavy sustained workloads.
Final Thoughts
The XASTRA Octant LC360 ARGB BK delivers where it counts. It kept the Ryzen 9 7900X in check across all three power profiles, as the single-frame triple-fan array stayed impressively quiet in the 25-50% PWM range, which is where most users will likely run it day to day. The ceramic bearing pump pushes enough flow at full speed to handle sustained loads without the temps creeping up.
Build quality looks and feels great without trying too hard. XASTRA put the attention where it’s most visible, which is the 4-inch display up front. The Display software backing it up is so simple to navigate, it doesn’t bury basic customization behind unnecessary menus. Installation is about as painless as AIOs get, especially on AM4/AM5 boards where the stock backplate does most of the work.
The trade-offs are minor but worth knowing going in. Fan noise ramps up quickly past the 75% mark, so this isn’t a cooler you want screaming under a stress test unless you don’t mind the noise. XASTRA also leaves out thermal paste and a screwdriver, so prepare for those items separately if you don’t already have them on hand.
Overall, the Octant LC360 ARGB BK is a great pick for gamers who want strong 360 mm cooling with a display that actually adds some personality to the build, without paying a premium for a flashier aesthetic they may not need.
XASTRA Octant LC360 ARGB BK AIO $89
Product Name: Octant LC360 ARGB BK
Product Description: The XASTRA Octant LC360 ARGB BK is a 360mm AIO liquid cooler built for gamers who want performance and personality in one package.
Brand: XASTRA
Summary
The XASTRA Octant LC360 ARGB BK is a 360 mm AIO liquid cooler with a customizable 4-inch display, triple FDB fans, and a ceramic bearing pump rated up to 3000 RPM. It delivered strong thermal performance on a Ryzen 9 7900X across multiple power profiles while staying quiet at low to mid fan speeds, making it a well-rounded choice for gaming builds.
Pros
- Strong cooling performance across all tested power profiles
- Quiet operation at 25-50% fan speed
- Customizable 4-inch 480p display with excellent software support
- Easy installation, especially for AM4/AM5 systems
- Clean single-frame fan array simplifies cable management
Cons
- Noise climbs sharply at higher fan speeds
- Availability could be better
