Liquid-Cooled Gaming PCs: AIO vs Custom Loops

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Cooling guide • Updated August 2026

Liquid cooling can improve CPU heat management in a powerful gaming PC, but the phrase covers very different products—from a sealed all-in-one CPU cooler to a fully custom water loop.

Quick answer: For most prebuilt buyers, a sealed AIO CPU cooler is the practical liquid-cooled option. It arrives filled and assembled, requires no routine fluid refill, and avoids the maintenance of a custom loop. It does not automatically liquid-cool the graphics card.

AIO vs custom-loop liquid cooling

Cooling type What it cools Maintenance Best fit
Air cooler CPU Clean dust from the heatsink and fans Simple, durable mainstream systems
Closed-loop AIO Usually the CPU Keep radiator and fans clean; the loop is factory sealed High-power CPUs, compact layouts, and buyers who want liquid cooling without custom-loop care
Custom water loop CPU, GPU, or both depending on the build Periodic inspection, cleaning, and fluid service Specialized enthusiast builds where cost and upkeep are understood

What liquid cooling can and cannot do

It can move CPU heat

A radiator gives the system a larger area to release CPU heat. This can be useful during long gaming, streaming, rendering, or simulation sessions.

It cannot fix poor airflow

The radiator still needs cool intake air and working fans. A blocked front panel, heavy dust, or weak exhaust can undermine any cooler.

It does not guarantee silence

AIO systems add a pump and radiator fans. Noise depends on fan curves, pump behavior, case airflow, component load, and room conditions.

Current Gigatech systems with 360mm AIO CPU cooling

Nova 7 compact liquid-cooled gaming PC

Nova 7

Core Ultra 7 265K • RTX 5080 • 360mm AIO

A smaller-footprint option that combines high-end graphics with an AIO-cooled CPU.

View current configuration & price

Important: These models use closed-loop AIO CPU coolers. Their graphics cards use the cooling supplied with the GPU; they are not custom full-system water loops.

Is an AIO worth it for a gaming PC?

An AIO makes the most sense when the processor produces substantial heat, the case is designed around a radiator, the system will run sustained workloads, or the buyer specifically wants the appearance and layout. A well-sized air cooler can still be the better choice for a lower-power CPU because it is simpler and removes the pump as a moving part.

Choose the cooler after choosing the processor and case. Paying for a large radiator does not compensate for choosing too little graphics performance for the games and monitor.

Care and ownership

  • Keep intake filters, radiator fins, and fans free of dust
  • Do not open or refill a sealed AIO
  • Watch for unusual pump noise, rising CPU temperatures, or fan behavior
  • Transport the system in its intended orientation and packaging
  • Use the warranty process rather than disassembling a covered cooler

Frequently asked questions

Do liquid-cooled gaming PCs need refilling?
A sealed all-in-one CPU cooler is factory filled and is not designed for routine refilling. A custom water loop has different maintenance requirements.
Is liquid cooling better than air cooling for gaming?
It depends on the processor, case, sustained workload, noise goals, and budget. A good air cooler can be excellent; an AIO is useful when more radiator area or a different layout is beneficial.
Does a 360mm AIO cool the graphics card?
Not unless the system specifically uses a GPU water block or hybrid graphics card. Gigatech systems listed here use the 360mm AIO for the CPU.
Can an AIO leak?
Any liquid system carries some risk, although modern sealed AIOs are designed as closed units. Proper installation, inspection, transport, and warranty support matter.
Is liquid cooling quieter?
Not automatically. AIO noise comes from both the pump and fans. Actual sound depends on the cooler, fan curves, case airflow, temperature, and workload.

Compare current AIO-cooled systems

Review the exact processor, graphics card, memory, storage, cooler, and live price on each product page.

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Prepared by Gigatech Gaming, assembling and testing gaming PCs in New Jersey since 2016. Exact components, prices, compatibility, and game performance vary by configuration and can change.