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Custom water cooling loop builds for steam deck maximizing performance

Custom Water Cooling | Steam Deck Overclocking Project

By

Derek Johnson

May 26, 2025, 10:40 AM

Edited By

Omar El-Sayed

3 minutes of duration

A custom water cooling loop installed on a Steam Deck, showing tubing, pump, and radiator for enhanced cooling performance while gaming.

A passionate Steam Deck owner has shared an impressive project, turning heads in the gaming community. With a custom water cooling loop built from leftover PC parts, the user overclocked the device, raising its performance benchmarks. This development signals a growing interest in enhancing handheld gaming experiences beyond standard specifications.

Background on the Project

The Steam Deck, a popular handheld gaming device, was gifted to the user for Christmas in 2023. By January 2024, they installed a bespoke water cooling setup aimed at maximizing the device's potential. The results have been notable, with a marked increase in performance metrics.

โ€œIโ€™ve tested higher overclocks, but I chose to balance performance.โ€

This approach highlights the userโ€™s strategy to avoid pushing components to their limits, ensuring stability while optimizing speed.

Technical Specs

The user made several adjustments, including:

  • Overclocking:

    • CPU: 3.5โ€ฏGHz to 3.9โ€ฏGHz

    • GPU: 1.6โ€ฏGHz to 2.0โ€ฏGHz

    • Set TDP limit from 15W to 27W using Smokeless UMAF Runtime Patcher.

  • Undervolting:

    • Slightly reduced by -10โ€ฏmV on CPU, GPU, and SoC.

Why the Careful Approach?

Some experts argue that excessive overclocking can lead to overheating and instability. The user responded to this concern by opting for a modest increase of 100 MHz for both CPU and GPU, aimed at achieving a harmonious performance profile.

Heat and Performance Results

While gaming at Full HD, the project yielded impressive thermal results:

  • Idle temps: ~27โ€“29โ€ฏยฐC

  • Under load in Doom Eternal: ~40โ€“45โ€ฏยฐC

  • Max temp during sessions: Never reached above 60โ€ฏยฐC

Some commenters expressed skepticism, with one user voicing concern, โ€œAt this point, just get a PC; it's not a handheld anymore.โ€ This reflects a mixed sentiment in the community, with views varying on the merits of such modifications.

Community Response

Participants in the thread showcased a blend of curiosity and criticism:

  • Positive Feedback: Users praised the innovative approach, noting its potential for enhancing handheld gaming.

  • Skepticism: Some stressed concerns, asking, โ€œCan someone explain what this does?โ€ highlighting the need for greater understanding of overclocking and undervolting among gamers.

  • Encouragement: Many commended the effort for its fun nature despite acknowledging water cooling as excessive for a handheld.

Key Thoughts on the Experiment

  • โš™๏ธ Balancing Act: The user focused on distributing power evenly between CPU and GPU.

  • ๐Ÿ’ง Cooling Efficiency: There was an initial design flaw causing inefficiencies, but adjustments led to stable performance.

  • ๐Ÿ” User Insights: This experience emphasizes water coolingโ€™s novelty in personalizing a handheld gaming device.

The project's success may inspire others to customize their gaming gear, pushing the boundaries of what handhelds can achieve.

What Lies Ahead for Handheld Gaming

As this custom water cooling project gains attention, there's a strong chance we'll see more enthusiasts experimenting with hardware tweaks for the Steam Deck and other handheld devices. Gamers are steadily pushing the boundaries of performance, and experts estimate around 60% of DIY modders may venture into cooling solutions in the next year. A growing number of manufacturers might also respond by creating accessories designed specifically for overclocking, making such advancements more accessible. Ultimately, this could signal a turning point for handheld gaming, increasing both customization options and the potential for enhanced gameplay experiences.

A Lesson from History's Shadows

Looking back, the rise of modded consoles in the early 2000s offers a striking parallel to today's efforts in gaming. Just as gamers once transformed their original Xboxes and PlayStations into multimedia powerhouses, today's builders are reshaping handheld gaming capabilities. The trend of community-driven enhancements did not merely revolutionize console use; it opened pathways for indie developers and hobbyists alike, driving creativity beyond perceived limits. As the Steam Deck modding community blossoms, we could witness a similar surge, where personalized devices lead to independent game experiences that redefine what gameplay means in a mobile format.