Introduction

LYNK+ is a brand-new entrant to the PC cooling space, and wants to chart a middle-path between DIY liquid cooling solutions and preinstalled all-in-one (AIO), closed-loop options. We have with us their pioneering GeForce RTX 5090 Modular AIO cooling kit, and can't wait to show you how to put one together and benefit from significantly lower temperatures on NVIDIA's feisty flagship GPU.

About a decade ago, replacing stock cooling with custom for high-end graphics cards almost always led you to classic liquid cooling loops, needing you to buy its various components and put them together. Then came AIO liquid cooling, making its way from closed-loop CPU coolers (CLCs), to closed-loop VGA coolers, only these weren't as readily available as aftermarket kits. Rather, graphics card manufacturers would come up with premium custom-design cards based on their flagship GPUs that packed factory-fitted AIO cooling solutions. AMD was the first to use an AIO CLC for a reference-design graphics card with its Radeon R9 Fury X, but this was a decade ago. Over the years we've also seen various AIO coolers integrated with custom GPUs, the like STRIX LC, Suprim Liquid and Astral Liquid series.



Fast-forward to 2025, and a pattern is emerging where NVIDIA's halo-segment GPUs tend to be extreme in terms of power and thermal requirements, and the price difference between the cheapest, air-cooled RTX 5090 and the most expensive custom-design RTX 5090 with liquid cooling solutions being as wide as $1000—a whopping 50% premium! This creates ample room for aftermarket cooling solutions like the LYNK+ Modular AIO. Make no mistake, the solution isn't cheap, it will still set you back by $380 for the kit that includes the block unit and the radiator, but it's still a compelling alternative to forking out that $1000 premium.

So what is it? LYNK+ is a custom-design board-specific all-in-one liquid cooling solution that comes with modularity. The tubes that connect the block with the radiator are easily detachable without coolant spillages. This modularity allows you to expand the loop with additional first-party components from LYNK+ in the future, such as CPU blocks or secondary radiators. The kit we have is for an Inno3D-branded RTX 5090 iChill X3 card, which is Inno3D's lowest-priced RTX 5090 product. Our sample includes a 360 mm radiator, three Arctic fans were included as well.

Your biggest draw to this product is how the card looks once everything is put together, and the innovative quick-disconnect fittings that the company patented. Besides a tightly integrated slim form factor, LYNK+ is promising significant drops in temperatures rivaling DIY liquid cooling loops, allowing you to overclock your RTX 5090 further, thanks to lower temperatures.

The cooler comes with a gorgeous ARGB illumination set that connects to your motherboard or LED controller. The cooler takes a PWM signal from your motherboard for the fans and pump, instead of relying on the card's own fan control, fan-stop is supported. The pump will always run at a minimum RPM, even if the fan signal is in fan-stop mode, or missing for any other reason.

At the moment, LYNK+ is offering the block—specific to your RTX 5090 model—at $180, and the 360 mm radiator + pump unit at $200, bringing the kit's cost up to $380. You may also purchase a RTX 5090 from the various retailers, and the LYNK+ kit will arrive preinstalled, with warranty on all components. In the near future, the company plans to launch smaller 240 mm radiators and CPU water blocks. You should be able to combine this set with that CPU block and 240 mm radiator to have one continuous liquid cooling loop for both the CPU and GPU, with two radiators.