F5F Stay Refreshed Power Users Overclocking 100ml coolant or 900ml one?

100ml coolant or 900ml one?

100ml coolant or 900ml one?

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Mattro29
Member
52
09-10-2025, 04:18 AM
#1
I want to construct a beast EKwb PC with around 2200Dolurz, aiming to keep costs low. I have a 125ml pump and reservoir combo, a slim quad 180ml radiator (perfect for Thermaltake P5), and roughly 1-2 meters of tubing—I only need to cool the CPU. The main goal is to fill tubes and the reservoir because it looks good, but EK advises using only 100ml coolant, which might not be sufficient. Should I choose 100ml, 900ml, or use distilled water?
Thanks in advance.
UPDATE: I need 9.5/12.7mm tubing.
M
Mattro29
09-10-2025, 04:18 AM #1

I want to construct a beast EKwb PC with around 2200Dolurz, aiming to keep costs low. I have a 125ml pump and reservoir combo, a slim quad 180ml radiator (perfect for Thermaltake P5), and roughly 1-2 meters of tubing—I only need to cool the CPU. The main goal is to fill tubes and the reservoir because it looks good, but EK advises using only 100ml coolant, which might not be sufficient. Should I choose 100ml, 900ml, or use distilled water?
Thanks in advance.
UPDATE: I need 9.5/12.7mm tubing.

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nobody21286
Junior Member
45
09-10-2025, 08:09 AM
#2
first, distilled water is perfectly fine if thats what you want to use. theres no real performance improvement to a premix coolant, they just come with the corrosion inhibitor and biocide already added usually. i dont know where this recommendation you talk of is, but you'll need enough fluid to fill everything.
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nobody21286
09-10-2025, 08:09 AM #2

first, distilled water is perfectly fine if thats what you want to use. theres no real performance improvement to a premix coolant, they just come with the corrosion inhibitor and biocide already added usually. i dont know where this recommendation you talk of is, but you'll need enough fluid to fill everything.

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gamerpgf
Member
175
09-16-2025, 05:18 PM
#3
first, distilled water is perfectly fine if thats what you want to use. theres no real performance improvement to a premix coolant, they just come with the corrosion inhibitor and biocide already added usually. i dont know where this recommendation you talk of is, but you'll need enough fluid to fill everything.
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gamerpgf
09-16-2025, 05:18 PM #3

first, distilled water is perfectly fine if thats what you want to use. theres no real performance improvement to a premix coolant, they just come with the corrosion inhibitor and biocide already added usually. i dont know where this recommendation you talk of is, but you'll need enough fluid to fill everything.

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Bidsie
Member
168
09-20-2025, 04:08 PM
#4
The EKWB configurator automatically includes it in the cart.
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Bidsie
09-20-2025, 04:08 PM #4

The EKWB configurator automatically includes it in the cart.