Enthusiast creates Peltier thermoelectric cooler from scratch — impressive rig uses two 360mm AIOs, homemade DC controllers, and a custom loop
A YouTube enthusiast known as TrashBench built a custom Peltier thermoelectric cooling system for GPUs using two 360mm AIOs, homemade DC controllers, and a custom loop. The setup achieved sub-ambient temperatures on both an RTX 4060 and RTX 3070 during testing, lowering GPU core temperatures by 7–10°C. Despite the technical achievement, the cooling solution proved highly inefficient, consuming 360 watts and undermining its practicality.
- ▪TrashBench constructed a Peltier cooling system using two Arctic 360mm AIOs and two homemade DC controllers.
- ▪The system cooled an RTX 4060 from 38°C to 28°C and an RTX 3070 from 40°C to 33°C under load.
- ▪The Peltier coolers consumed 360 watts of power, making the solution highly inefficient.
- ▪Sub-ambient temperatures were achieved, but the power draw negated the cooling benefits.
- ▪Testing included both pre-cooled and warm-start scenarios, with slightly higher temperatures in the latter.
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PC Components Cooling Liquid Cooling Enthusiast creates Peltier thermoelectric cooler from scratch — impressive rig uses two 360mm AIOs, homemade DC controllers, and a custom loop News By Aaron Klotz published 2 May 2026 It works, but the performance results are underwhelming When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. (Image credit: YouTube - TrashBench) Copy link Facebook X Whatsapp Reddit Pinterest Flipboard Email Share this article 0 Join the conversation Follow us Add us as a preferred source on Google Newsletter Subscribe to our newsletter Peltier liquid cooling has always been exotic and niche, but only CPU coolers have adopted the technology, leading to the question of whether or not GPUs can benefit from this cooling…
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