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There are no differences between POM (Acetal, commercial brand name Delrin) and acrylic glass (Plexi) top in regards to cooling performance. Acrylic is translucent and thus allows the visual inspection of the internals of the water block and also allows colored coolants to be seen in the cooling channels.
Plexi
Also, acrylic glass can be damaged beyond repair when alcohol or acetone is applied to the surface while POM (Acetal) offers higher chemical wear resistance.
POM Acetal is softer than acrylic and its impact strength is higher than that of the Plexi. Plexi (acrylic glass) is more brittle and is more prone to cracking when mistreated than Acetal.
Browse our high performance Quantum, Lignum and Classic product lines, Kits and Accessories.
Not the DIY person? Check out our fully water-cooled prebuilt PCs.
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