Noctua’s second-generation NF-A12x25 G2 hit retail this year at $34.90, bringing a redesigned blade profile and hub pattern to what was already the reference 120mm fan for airflow-per-decibel. That refresh, plus a wave of ARGB 3-packs from Corsair, Lian Li, and Thermalright undercutting $15 per fan, makes 2026 a good year to actually rethink case airflow instead of running whatever came stock in the case. These five fans cover the range from bulk-buy budget builds to positive-pressure setups built around a single premium intake trio.
| Spec | Noctua NF-A12x25 G2 PWM 9.4/10 | Arctic P12 PWM PST (5-Pack) 8.9/10 | Corsair RS120 ARGB (Triple Pack, Black) 8.8/10 | Thermalright TL-C12W-S V3 X3 (White, 3-Pack) 8.5/10 | Lian Li Uni Fan SL-Infinity 120mm (Triple Pack w/ Controller, Black) Unavailable 8.3/10 |
|---|---|---|---|---|---|
| Size | 120mm x 25mm | 120mm x 25mm | 120mm x 25mm | 120mm x 25mm | 120mm x 25mm |
| Max RPM | 1800 RPM (1500 RPM with included LNA) | — | — | 1500 RPM | — |
| Max Airflow | 107.3 m³/h (63.1 CFM) | 56.3 CFM | 72.8 CFM | 66.17 CFM | 61.3 CFM |
| Static Pressure | 3.14 mm H2O | — | 2.8 mm H2O | 1.53 mm H2O | 2.66 mm H2O |
| Noise | 22.5 dB(A) | 0.3 Sone | 10-36 dB(A) | 25.6 dB(A) max | 29 dB(A) |
| Bearing / Warranty | SSO2, 6-year | — | — | — | — |
| Rating | 9.4/10 | 8.9/10 | 8.8/10 | 8.5/10 | 8.3/10 |
Prices change daily — tap Check Price for the current Amazon price.
Prices change daily — tap Check Price for the current Amazon price.
Quick Picks
- Best overall: Noctua NF-A12x25 G2 PWM — the redesigned G2 blade profile pushes more airflow than the original A12x25 at the same 22.5 dB(A) noise floor
- Best value: Arctic P12 PWM PST (5-Pack) — five fans for $27.49, enough to fill front, top, and rear on one PWM header
- Best budget RGB: Thermalright TL-C12W-S V3 X3 — three ARGB fans for $13.90, less than $5 each
Buying Guide: What Positive Airflow Actually Needs
Positive vs. negative pressure
A positive-pressure case pulls in more air through filtered intakes than it exhausts, so the extra volume pushes back out through case gaps and seams instead of pulling in unfiltered dust through them. In practice, that means intake fans should run slightly higher combined CFM than exhaust — a common setup is 3 fans pulling air in the front and 1-2 pushing it out the rear and top. Every fan in this roundup works for either role; the distinction that matters is which ones you mount as intake behind a dust filter.
CFM vs. static pressure
CFM (cubic feet per minute) measures raw airflow volume — what you want for open mesh-front intakes with minimal restriction. Static pressure measures how well a fan pushes air through a restriction, like a dense dust filter or a radiator. The Corsair RS120 ARGB leads this roundup on rated CFM (72.8), while the Noctua NF-A12x25 G2 has the highest static pressure (3.14 mm H2O) despite lower peak airflow — a better match for filtered front intakes or thin radiators.
Daisy-chain cabling matters more than the spec sheet
Every 3-pack and 5-pack in this roundup (Arctic P12 PST, Corsair RS120 ARGB, Thermalright TL-C12W-S V3 X3, Lian Li SL-Infinity) ships with a daisy-chain or PST cable that lets the whole set run off a single motherboard PWM header. Buying individual fans like the Noctua NF-A12x25 G2 means either enough motherboard fan headers for each one or a separate PWM fan hub — a detail that’s easy to miss when comparing per-fan prices.
RGB adds cost per fan, not always performance
The Arctic P12 PST skips RGB entirely and delivers the lowest per-fan cost here. The Thermalright TL-C12W-S V3 X3 proves ARGB doesn’t have to cost more — at $4.63 per fan it’s still the cheapest pick in this list, RGB included. The Lian Li Uni Fan SL-Infinity sits at the other end: its infinity mirror effect is the most distinct look here, but it roughly triples the per-fan cost of the Thermalright pack for a spec sheet that doesn’t outperform it on airflow.
Detailed Reviews
1. Noctua NF-A12x25 G2 PWM — Best Overall
The Noctua NF-A12x25 G2 PWM replaces a fan that had been the airflow benchmark for years, and the redesign shows up in the numbers: 107.3 m³/h of rated airflow at 22.5 dB(A), an improvement over the original A12x25 at the same noise level according to Noctua’s published specs. The fan uses Noctua’s Sterrox liquid-crystal polymer blades with an optimized hub pattern the company credits for the airflow gain.
A 6-year warranty backs it up — double what most competitors in this roundup offer — and the included Low-Noise Adaptor caps speed at 1500 RPM for cases where absolute silence matters more than peak airflow. The tradeoff is cost: at $34.90 for a single fan, building a standard 3-fan intake wall runs well past $100, several times what the Arctic or Thermalright packs cost for the same fan count. It’s sold individually with no daisy-chain cable, so a multi-fan Noctua setup needs either spare motherboard headers or a separate PWM hub.
2. Arctic P12 PWM PST (5-Pack) — Best Value
The Arctic P12 PWM PST 5-Pack solves the “I need to fill a case with fans” problem at the lowest cost per fan in this roundup — $27.49 for five works out to about $5.50 each. Arctic’s PWM Sharing Technology cable daisy-chains all five off a single motherboard header, which matters when a budget build doesn’t have five spare fan headers to spare.
Rated airflow of 56.3 CFM is the lowest peak number in this list, and the 0.3 Sone noise rating keeps it that way even with five or six fans running simultaneously across intake and exhaust. There’s no RGB option at all here — this is a fan for builders who want airflow and quiet operation without paying for lighting they may not use, and it pairs naturally with a case that already has RGB elsewhere.
3. Corsair RS120 ARGB (Triple Pack, Black) — Best RGB Value
The Corsair RS120 ARGB Triple Pack posts the highest rated airflow in this roundup at 72.8 CFM, and at $34.99 for three fans with 8 addressable LEDs each, it undercuts buying three lighting-equipped fans individually from most competitors. The daisy-chain cable wires all three to the motherboard through one PWM header and one ARGB header, matching the convenience of the Arctic and Thermalright packs.
Noise climbs to 36 dB(A) at the top of its 420-2100 RPM range, audibly louder than the Noctua or Arctic picks at their respective ceilings — worth knowing if the fans will run near full speed under sustained load rather than idling at a curve-controlled low RPM. Getting past basic motherboard RGB sync presets into full per-LED control effectively means installing Corsair’s iCUE software, an extra step some builders would rather skip.
4. Thermalright TL-C12W-S V3 X3 (White, 3-Pack) — Best Budget
At $13.90 for three ARGB fans, the Thermalright TL-C12W-S V3 X3 undercuts every other pick in this roundup on price, including the non-RGB Arctic P12 PST on a per-fan basis. Rated airflow of 66.17 CFM actually beats the pricier Arctic pack and the Lian Li Uni Fan SL-Infinity at max RPM, and the ARGB header syncs directly with ASUS Aura Sync, MSI Mystic Light, ASRock Polychrome Sync, and Gigabyte RGB Fusion without a proprietary controller.
The catch shows up in build quality and longevity data: Thermalright’s S-FDB bearing doesn’t have the multi-decade reliability track record Noctua’s SSO2 or Arctic’s fluid dynamic bearings carry, and the included cables and frame plastic feel thinner than the Corsair or Lian Li packs. For a budget build or a secondary case where a fan failure in 3-4 years is an acceptable risk at this price, it’s the easiest recommendation in this list.
5. Lian Li Uni Fan SL-Infinity 120mm (Triple Pack w/ Controller, Black) — Best Aesthetic
Lian Li Uni Fan SL-Infinity 120mm (Triple Pack w/ Controller, Black)
The Lian Li Uni Fan SL-Infinity is the aesthetic pick in this roundup — its dual-layer infinity mirror design produces a look no other fan here replicates, especially visible through a windowed side panel. The included controller supports daisy-chaining up to 16 fans across 4 groups, so the 3-pack can expand into a full-case lighting setup without buying a separate hub.
At roughly $30 per fan, it’s the most expensive pick in this list, and its 61.3 CFM airflow doesn’t lead the spec sheet — the Corsair RS120 ARGB and Thermalright TL-C12W-S V3 X3 both move more air for less money. This is a fan for builds where the infinity mirror effect is the point, not the fan to pick if raw airflow-per-dollar is the priority.
FAQ
How many intake fans does a positive-pressure build need?
A common baseline is 3 intake fans (typically front-mounted behind a dust filter) against 1-2 exhaust fans (rear and top), which gives the case slightly more air coming in than going out. The Arctic P12 PST 5-Pack covers a full 3-intake, 2-exhaust setup from a single purchase.
Do all these fans work as both intake and exhaust?
Yes — none of these are one-directional radiator-only fans. Static pressure matters more for intake positions behind dust filters, where the Noctua NF-A12x25 G2’s 3.14 mm H2O rating has an edge, while high-CFM fans like the Corsair RS120 ARGB work well in open exhaust positions with less restriction.
Can I mix fan brands in one build?
Yes, mechanically any 120mm PWM fan works on any motherboard header. The complication is RGB software — Corsair’s iCUE, Lian Li’s controller, and motherboard-native Aura Sync/Mystic Light/Polychrome Sync don’t always share one lighting profile across brands, so mixing the Corsair RS120 ARGB with the Thermalright TL-C12W-S V3 X3 may mean running two separate RGB control apps.
Is the Noctua NF-A12x25 G2 worth the price over the Arctic P12 PST?
For a case with strong airflow needs and long-term reliability as the priority — like a positive-pressure build meant to run for 5+ years — the Noctua’s higher static pressure and 6-year warranty justify the premium. For a budget or secondary build, the Arctic P12 PST 5-Pack delivers most of the practical airflow at a fraction of the cost.
What’s a good motherboard-agnostic way to add more fans than I have headers for?
A PWM fan hub or splitter, sold separately from any fan in this roundup, lets several fans share one motherboard header when a case needs more fans than the board has headers. The daisy-chain cables included with the Arctic, Corsair, Thermalright, and Lian Li packs already solve this within each pack — a hub only becomes necessary when combining fans from different packs or brands.
The Bottom Line
The Noctua NF-A12x25 G2 PWM is the best overall 120mm fan available right now — redesigned blades, a 6-year warranty, and airflow that beats its predecessor at the same noise level, at a price that makes sense for a 1-3 fan premium intake setup. Builders filling an entire case on a budget should go with the Arctic P12 PWM PST 5-Pack at $5.50 per fan, and anyone who wants RGB without paying a premium for it should look at the Thermalright TL-C12W-S V3 X3 at $4.63 per fan. For a build centered on a windowed side panel, the Lian Li Uni Fan SL-Infinity justifies its higher price with a look nothing else here matches. For general airflow setup and fan placement strategy, see our PC case airflow guide, and for cases already optimized for this kind of setup, check our best cases for airflow roundup.