A fourth Amici 5GT joins the chain without issue, and it is tempting to treat that success as proof the chain stretches further still. It does not, and the reasoning behind that limit is worth understanding before a fifth fan gets added on the strength of the fourth working.
Quick Answer
The Amici 5GT's ARGB leads are described as linkable across three to four fans, and that is the stated range for this specific model. A working fourth fan confirms the chain performs as described up to its stated limit; it does not demonstrate that a fifth would also work, since five sits outside anything the product description covers.
Why a working fourth does not prove a fifth will work
Four is inside the stated three-to-four range, so a fourth fan linking successfully is simply the chain behaving exactly as specified. It is not evidence of headroom beyond that figure, because nothing about the description implies the range was written conservatively. Reading a working fourth as proof of extra capacity is a reasonable-sounding assumption that the product's own stated limit does not support.
What actually governs a longer chain
Two separate things would need to hold for a fifth fan to work reliably: the product itself would need to support a longer chain than described, which it does not according to the listing, and the motherboard's addressable header would need enough rated current for the extra load, which is a board-specific figure entirely separate from the fan's own stated range.
The symptom of pushing past a stated limit
Where a chain is extended beyond what is supported, either by the product or by the header's current rating, the more commonly reported outcome is inconsistent or unstable lighting along the chain rather than an outright failure. That makes an overextended chain hard to diagnose confidently just from watching it, since it may work most of the time and glitch occasionally rather than failing cleanly.
The better way to wire a five-fan build
Rather than testing whether a fifth fan tolerates being added to an existing four-fan chain, splitting the build across two separate addressable headers is the approach the product description actually supports. Most current motherboards provide more than one addressable header specifically to accommodate builds larger than a single chain's stated range.
Where to confirm anything beyond the stated range
If a longer chain is genuinely needed and the stated three-to-four figure is a real constraint on a project, checking directly with AsiaHorse is the way to find out whether a longer run is supported under different conditions, rather than inferring it from one working fourth fan. Extending beyond a stated specification is the manufacturer's information to provide, not something to establish by trial.
The speed side has no equivalent limit
None of this affects the PWM cabling. Each Amici 5GT keeps its own 4-pin cable regardless of chain length, so fan header planning for a five-fan build is governed entirely by how many headers or splitters are available, unrelated to whatever limit applies to the ARGB chain. The current Amici 5GT range sits under Evetech's case fans section, while case accessories covers splitters for boards with fewer headers than fan positions.
Frequently Asked Questions
What does the product description actually state for chain length?
That ARGB leads are linkable across three to four fans, which is the specific range given for this model.
Does a working fourth fan mean a fifth will also work?
Not necessarily. Four sits inside the stated range, so it confirms the specification rather than proving the chain extends beyond it.
What two things would need to be true for a fifth fan to work?
The product would need to support a longer chain than described, and the addressable header would need enough current capacity for the extra load. Neither is confirmed by the stated specification.
What usually happens if a chain is pushed past its limit?
Inconsistent or unstable lighting along the chain is the commonly reported symptom, rather than a clean failure.
How should a five-fan build be wired instead?
Split across two separate addressable headers, which is within what the product supports and what most current motherboards are built to accommodate.
Where can I confirm whether a longer chain is possible under different conditions?
Directly with AsiaHorse, since extending beyond the stated range is information the manufacturer would need to provide.
Does the PWM cabling have the same chain limit as the ARGB leads?
No, each fan's PWM cable is independent of chain length entirely, so fan header planning follows a separate logic based on header and splitter availability.
Planning a five-fan lighting layout?
Check Evetech's case fans and case accessories ranges before deciding how to split the chain.