Best Fans for the Lian Li O11 Dynamic EVO (2026): 5 Picks

The Lian Li O11 Dynamic EVO ships with no fans. Not a token rear exhaust, not one intake. You buy the case, open the box, and the entire airflow plan is yours to build.

That is less of a problem than it sounds. The EVO hands you three slide-out brackets, each taking three 120mm fans or two 140mm, and all three are interchangeable. Top, side, bottom. Which fan belongs in which bracket comes down to whether a radiator is sitting in it. So these five picks are assigned to brackets rather than ranked flat.

Our top pick: Lian Li UNI FAN SL-Infinity 120

Once you populate more than one bracket, wiring binds before airflow does, and the SL-Infinity is the only fan here that solves it. Three fans, one cable run, one controller.

Lian Li UNI Fan SL-Infinity-120-Triple Pack-Black-UF-SLIN120-3B

$61.92$89.99

Buy the Lian Li UNI FAN SL-Infinity 120 on Amazon

Quick picks

Specs at a glance

Airflow and static pressure

The two orderings nearly invert below the top slot, and that is the point. The fan that wins the open bottom bracket is not the one you want behind a radiator.

The EVO's mount matrix

Every fan decision in this chassis starts with the bracket count. Top, side, and bottom each take three 120mm fans or two 140mm. The rear takes a single 120mm. There is no front intake at all, because the front is glass.

Radiators change the arithmetic. Top and bottom each accept a 360mm or 280mm radiator up to 87.5mm thick, and the side bracket accepts the same. Whichever bracket takes the radiator is the one that needs static pressure. The other two are pushing air through a filter and nothing else. If the mounting position is still open, our guide to cases that mount a 360mm radiator cleanly covers the trade-offs.

Air cooling caps at 167mm of clearance, and that ceiling is the fork in the road. Go air and all three brackets stay free for case fans; the tower coolers that clear 167mm are the shortlist to start from. Go liquid and one bracket is spoken for before you have bought a single fan.

One caveat catches people. The top and bottom brackets are missing screw points for three 140mm fans, and Lian Li's guidance is that the position holds UNI FAN frames without them. If you want 140mm up top or underneath and you are not buying UNI FANs, plan on two rather than three.

How we picked

Three constraints drove every pick, in this order. First, static pressure wherever something is in the way. A 360mm radiator plus a dust filter is a genuine restriction, and a fan rated at 1.53 mmH2O stalls against it in a way a 2.66 mmH2O fan does not. Second, raw airflow wherever nothing is. The bottom bracket has a filter and a straight shot at the GPU, and the spread across these five is wide: 56.3 CFM at one end, 100.9 CFM at the other. Third, cable count, which the wider 120mm and 140mm shortlist treats as a nice-to-have and this case treats as structural.

Six fans is twelve leads when each carries a PWM and an ARGB cable. Nine is eighteen. Behind glass on three sides that is not cosmetic, it is the difference between a build you want to look at and one you keep the panel on.

Two things ruled candidates out. Fixed-RPM fans with no per-fan PWM cannot be balanced against each other, and a chassis that holds nine of them is the worst place to find that out. Sleeve bearings went the same way.

One honest note on budget. The case price is not the build price. A three-glass-panel chassis with zero fans is a display cabinet until you populate it, and a full EVO fan order is a meaningful fraction of what the chassis cost. Cases that ship fan-ready exist, and the Corsair 4000D Airflow is one of them. This is not, and that is a deliberate trade rather than an oversight.

The intake and exhaust layout that works

Bottom and side intake, top and rear exhaust. That is the loop.

The bottom bracket feeds the GPU directly, which in almost every EVO build is the component throwing off the most heat. The side bracket feeds the board chamber. The top exhausts, because heat rises and the top is the only unobstructed exit. A mesh-front chassis like the Fractal Design North can lean on front intake instead; the EVO cannot, so the bottom bracket is doing work that other cases split across two positions.

Where the radiator goes is the one real decision. Top mounting turns your exhaust into radiator exhaust, which works, but the same fans then vent CPU heat and case heat through one path. Side mounting keeps the top clean at the cost of a bracket you probably wanted for intake.

Run intake slightly stronger than exhaust. Positive pressure keeps dust out of the unfiltered seams, and this chassis has plenty.

Best Overall: Lian Li UNI FAN SL-Infinity 120

Lian Li UNI Fan SL-Infinity-120-Triple Pack-Black-UF-SLIN120-3B

$61.92$89.99

Buy the Lian Li UNI FAN SL-Infinity 120 on Amazon

Specs

What it does well

The frames interlock. Contact pads on the side of each frame pass power and signal to the next fan, so a bracket of three leaves the assembly as one cable run instead of six leads. Populate all three brackets and you have three runs where a conventional build has eighteen wires to hide.

The bundled controller drives up to sixteen fans across four groups, which covers a nine-fan EVO with room to spare. Speed tops out at 2100 RPM, so there is headroom if one lands on the radiator bracket, even though the fan is not pressure-optimised by design.

Screwless mounting matters more than it sounds. The EVO's top and bottom brackets lack screw points for three 140mm fans, and Lian Li's answer is that UNI FAN frames hold without them. If a three-fan 140mm top or bottom is in the plan, this is the line that supports it.

What you give up

Airflow. At 61.3 CFM this is the lowest peak in the group, and the Phanteks M25-120 Gen2 moves 84.26 CFM in the same 25mm frame. Put SL-Infinity fans on the bottom bracket and you trade roughly a quarter of your intake volume for a tidy cable run. Defensible in a showcase build. Not free.

You are also buying into a closed system: Lian Li's controller, Lian Li's software, Lian Li's frames. A third-party fan cannot join the middle of a chain. And ARGB is not optional, because no unlit SL-Infinity exists, so a sleeper build has to look elsewhere.

Who it's for

The builder doing the full showcase EVO with six fans or more, who wants the back chamber to stay sane without bolting on a third-party hub.

Best Value: ARCTIC P12 PWM PST (5-Pack)

ARCTIC P12 PWM PST (5 Pack) - PC Fans, 120mm Case Fan, PWM Sharing Technology (PST), Pressure-optimised, Quiet Motor, Computer, 200–1800 RPM (0 RPM <5%) - Black

$39.99

Buy the ARCTIC P12 PWM PST (5-Pack) on Amazon

Specs

What it does well

2.20 mmH2O is enough to push through a 360mm radiator and a dust filter without the airflow collapsing. That puts five fans on the radiator bracket for less than one premium fan costs, which is the entire argument.

PST is the other half. Each fan carries a pass-through socket, so five chain onto one motherboard header and share a PWM signal. Less elegant than the Lian Li frames, but it solves the header-count problem, which is what most builders hit first.

Below five percent PWM they stop completely. An idle EVO with five of these makes no noise at all, and the fluid dynamic bearing means they will still be turning years from now.

What you give up

No lighting. In a chassis with three glass panels where the fans are most of what you see, that is a real cost. These belong on the brackets you cannot see, or in a build that has gone deliberately dark.

Cable runs are conventional, so five daisy-chained leads still thread through the back chamber. And 1800 RPM is the ceiling: behind a thick radiator with a dense fin stack, both Phanteks fans here have more left to give.

Who it's for

The builder filling the two brackets nobody sees, or anyone who wants the airflow and no light show. Also the right answer when the cooling budget already went to the AIO.

Best Premium: Phanteks T30-120 (3-Pack)

Phanteks T30-120 PWM Fan 120mm High-Performance Silent PC Case Fan 3-Pack

$99.99

Buy the Phanteks T30-120 (3-Pack) on Amazon

Specs

What it does well

7.37 mmH2O. Nothing else here is within a factor of two. On a bracket carrying a thick 360mm radiator that is the difference between air moving through the fins and air finding a way around them, and it shows up as a CPU temperature delta rather than a spec-sheet line.

The 30mm frame is why. A deeper housing carries a blade roughly a quarter larger than a 25mm fan can, and both the pressure and the 100.9 CFM peak come from that. Same trick as a thicker radiator, applied to the fan.

Three hardware PWM profiles sit on a physical switch. Advanced runs it as a 100 CFM part, Performance sits at 67 CFM, Hybrid caps around 40 CFM for a quiet desktop. You buy three fans and choose one at install time.

What you give up

The depth. The EVO allows 87.5mm of radiator budget on the top and bottom brackets, and a 30mm fan plus a 27mm radiator plus mounting hardware eats into that faster than you expect. On the side bracket, depth competes with tall memory and the board tray. Buyers have flagged that some AIO and tall-RAM combinations force the side bracket outward to clear it.

At 3000 RPM it reaches 39.7 dBA, loud in a quiet room, which is why the three profiles exist. There is no lighting, and the cost per fan is the highest here by a wide margin.

Who it's for

The builder running a thick 360mm radiator and a high-TDP chip who wants the temperature delta and does not mind that the fan is invisible behind the rad.

Best Budget: Thermalright TL-C12C-S X3

Thermalright TL-C12C-S X3 CPU Fan 120mm ARGB Case Cooler Fan, 4pin PWM Silent Computer Fan wth S-FDB Bearing Included, up to 1550RPM Cooling Fan（3 Quantities）

$12.98

Buy the Thermalright TL-C12C-S X3 on Amazon

Specs

What it does well

66.17 CFM at only 1550 RPM is a strong ratio. The fan is not straining to move that air, which is why it tops out at 25.6 dBA and never becomes the loudest thing in the case. On an open bottom bracket with nothing but a filter in front of it, that is close to ideal.

The bearing is sealed fluid dynamic rather than the sleeve bearing usual at this price. Across six or nine units the difference compounds, because one buzzing fan in a nine-fan build is a buzzing build.

ARGB runs on a standard 3-pin 5V header, so motherboard software drives it. No proprietary hub, no second lighting app arguing with the first.

What you give up

1.53 mmH2O is the weakest static pressure here and it is not close. Put these on a radiator bracket and the fin stack wins. They are open-bracket fans and should be used as such. The plastic diffuser rings also look like the cheaper option next to Lian Li's finish behind glass, because they are.

Reports suggest several near-identical TL-C12C-S X3 listings exist, separated only by colour and a revision suffix. If you are ordering two or three packs, confirm each one is the same listing.

Who it's for

The builder populating the open brackets on a budget who still wants lighting, and who already decided the money goes to the AIO.

Editor's Pick: Phanteks M25-120 Gen2 (3-Pack)

Phanteks M25-120 Gen2 Triple Pack 120mm PWM High Performance Cooling Fan, Daisy-Chain Unified Fan Frame, Black.

$24.98

Buy the Phanteks M25-120 Gen2 (3-Pack) on Amazon

Specs

What it does well

84.26 CFM in a 25mm frame is the number nothing else here matches without going thicker. The bottom bracket sits over an open floor with a filter and a clear line to the GPU, and peak airflow is what that position rewards. Against the SL-Infinity in the same slot, this is 23 more CFM.

Static pressure holds up too, at 2.67 mmH2O, which edges every other 25mm fan in this group. Cybenetics rates it Platinum for airflow and Silver for static pressure, so it is not an airflow fan that falls apart the moment something sits in front of it.

The frames interlock and run on a single Linq6 cable, capturing most of the wiring benefit of the Lian Li ecosystem for less money.

What you give up

35.13 dBA at maximum is audible, and the floor is 500 RPM rather than a full stop, so the case is never truly silent. On a machine that idles most of the day, that matters.

The black PWM three-pack carries no lighting, and the ARGB version is a separate, dearer listing. Phanteks frames also do not interlock with Lian Li's, so mixing the two ecosystems mid-bracket leaves you running two hubs.

Who it's for

The builder who wants the bottom intake feeding the GPU as hard as it can, and who is fine with the fans staying invisible in the darkest part of the case.

Bottom line

If you are building the full showcase EVO with six fans or more, buy the Lian Li UNI FAN SL-Infinity 120 and take the airflow trade for a clean back chamber. If a thick 360mm radiator is in the plan, put Phanteks T30-120s on that bracket and something cheaper everywhere else. If the bottom intake is the priority and lighting is not, the Phanteks M25-120 Gen2 moves the most air per 25mm of depth. On a tight budget, ARCTIC P12 PWM PST five-packs cover two brackets for what one premium set costs. Whatever you choose, order the fans with the case, because this one arrives with none.

FAQ