EK Water Blocks EK-Quantum Surface S240 White
EK Water Blocks

EK Water Blocks EK-Quantum Surface S240 White

SKU HC-409513MPN 3831109838976

  • 240 mm
  • 30 mm thick
  • Copper

Highlights

  • 30mm thick 240mm copper radiator for space-constrained builds
  • 20 FPI non-louvered fins balance heat transfer and airflow resistance
  • Low coolant and airflow restriction supports single-pump multi-radiator loops
  • EK-Matrix7 compatible for clean tubing runs with Reflection² distro plates
  • Semi-matte white stainless steel sides, black matte fins
  • Includes black M4 screws for standard 25mm fans

Key specs

Size
240 mm
Thickness
30 mm
Material
Copper
Color
White
Fin Density (FPI)
20 FPI
Pressure tested (up to)
1 Bar
All specifications
$70.99
  • ≈ 0.001141 BTC
  • ≈ 0.04132 ETH
  • ≈ 71.05 USDT

In stock Ships by Tue, Nov 17 when paid today.

  • Delivery to the United States: $39.90 DHL Express Worldwide · arrives Wed, Nov 18 – Mon, Nov 23 if paid today
  • Rate locked at checkout Up to 60 min to send BTC, 30 min for ETH and USDT
  • New, sealed and genuine Full manufacturer warranty
  • 30-day returns Unused items in original packaging
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Overview

A 30mm thick 240mm copper radiator built for tight cases and custom loops. It delivers strong thermal performance at low fan speeds with minimal flow restriction.

Design and Construction

The radiator measures 285mm long, 130mm wide, and 30mm high, weighing 0.73kg. Thick extruded aluminum end caps with a silver finish join stainless steel side plates coated in semi-matte white paint. Fins carry a black matte coating with high thermal conductivity. The white shade matches popular white PC cases.

Thermal Performance

Sixteen 2mm copper tubes span the full length for optimal coolant flow. The new core performs up to 20 percent better than the previous CoolStream SE thanks to enhanced fin structure. Non-louvered copper fins at 20 FPI provide strong heat transfer at low and medium fan speeds. Push-pull configurations are not recommended for proportional gains.

Loop Integration

Two G1/4-inch ports and a multipass layout keep flow restriction low, allowing multiple radiators on a single D5 or DDC pump. Low airflow restriction helps case ventilation and lets other radiators breathe. The unit is pressure tested to 1 bar.

Mounting and Compatibility

Supports two 120mm fans via M4 threads. Black M4 Philips round-head screws are included for standard 25mm fans; longer M4 screws can be sourced if needed without damaging the core. EK-Matrix7 standardization aligns port positions with Reflection² distro plates for easy swaps between S, P, and X series radiators.

EK-Quantum Surface S240 White specifications

General
BrandEK Water Blocks
Manufacturer part no.3831109838976
EAN3831109838976
Radiator Specifications
Fin Density (FPI)20 FPI
Pressure tested (up to)1 Bar
Type
Radiator typeMultipass
Fan Support
Fan Compatibility2x 120 mm
Fan / radiator mountingM4 thread
Water Cooling
Water cooling connectors2x G1/4"
Lighting
Lighting / RGBNo
Color
Primary ColorWhite
Secondary ColorBlack
Main radiator color (cage)White
Main radiator color (fins)Black
Materials
MaterialsAluminum, Brass, Copper, Stainless steel, Steel
Heat Sink MaterialCopper
Dimensions
Length / Depth285 mm
Width130 mm
Height30 mm
Weight0.73 kg
Radiator Size240 mm

Specifications come from the manufacturer and can change without notice. Check the box contents and compatibility before ordering; our team answers questions within one business day.

Shipping & returns

Delivery to the United States: $39.90DHL Express Worldwide · arrives Wed, Nov 18 – Mon, Nov 23 if paid today

Ships from our warehouse in Germany: in stock, it leaves within 1–2 business days, tracked to the door.
ToBusiness daysThis item
GermanyDHL Paket1–2$5.90
Other EU countriesDHL Parcel International2–8$11.90–$15.90
UK, Switzerland and NorwayDHL Parcel International3–7$24.90
United States and CanadaDHL Express Worldwide2–5$39.90
Asia and the Middle EastDHL Express Worldwide2–5$49.90
Australia and New ZealandDHL Express Worldwide3–6$59.90
  • Discreet packaging Plain, unbranded box — no crypto or brand references outside
  • Returns 30 days for unused items in original packaging; faulty items are on us
Rates and delivery times by country

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