Introduction

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Typical Flow Diagram for Single Block Loop

All-in-one liquid coolers seem to be all the rage with several companies introducing expandable systems for integration of a system chipset or graphics cooling block to the loop. We will be exploring the performance of two of our previously reviewed coolers to see just how well those liquid coolers can handle the addition of an additional in-line graphics card block. Both the Koolance EXT-440CU Liquid Cooling System and the Cooler Master Glacer 240L Liquid CPU Cooler were used with the ASUS Poseidon GTX 780 graphics card placed in-line for testing.

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Typical Flow Diagram for Multi-Block Loop

Several key factors come into play in a liquid cooling loop that the addition of a second block effects including:

  • heat dissipation capacity of the radiator
  • flow rate of the system
  • resistance of the system components

Basically, additional liquid cooling blocks add more heat and longer tube runs to the system. This increases the amount of heat that the system must dissipate and introduces increased flow resistance to the system because of the increase of the loop size as well as the internal makeup of the added cooling blocks. The increase resistance and loop size directly effects the system flow rate and how hard the pump must work to keep the coolant flowing through the system.

For the purpose of this testing, we did not measure the liquid flow of the system directly. Rather, we measured the temperature of both components (the CPU and GPU) which directly correlates to the flow and heat dissipation capacity of the system. The ASUS Poseidon block adds little resistance to the system, besides the added length of the liquid channel, because of its simple U-loop channel internal to the block.

For additional information about the components used for this article, please see our review of the Koolance EXT-440CU Cooling System here, the Cooler Master Glacer 240L Liquid CPU Cooler here, and the ASUS Poseidon GTX 780 graphics card here.

Continue reading our analysis of Cooling capacity in a Multi-block Liquid Cooling loop!

Manufacturer: Koolance

Introduction and Technical Specifications

Introduction

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Koolance EXT-440CU Liquid Cooling System
Courtesy of Koolance

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Koolance CPU-380I CPU Water Block with Intel CPU mounting plate
Courtesy of Koolance

Koolance has effectively transformed itself from a minor player in the cooling community to a powerhouse at the forefront of high performance liquid cooling products. Koolance recently released the EXT-440CU Liquid Cooling System, an apparatus integrating the cooling system's reservoir, pump, and radiator into an aluminum assembly. In addition to the EXT-440CU unit, Koolance provided us with their CPU-380I CPU water block for testing as a complete kit. We tested the Koolance kit in conjunction with other all-in-one and air coolers to see how well the Koolance kit stacks up. The EXT-440CU Liquid Cooling System retails at an MSRP of $274.99 with the CPU-380I water block available for a $74.99 MSRP. While not the cheapest solution, the adage "You get what you pay for" fits the bill for this Koolance kit.

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Koolance EXT-440CU Liquid Cooling System, side view
Courtesy of Koolance

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Koolance EXT-440CU Liquid Cooling System, rear view
Courtesy of Koolance

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Koolance CPU-380A CPU Water Block with AMD CPU mounting plate
Courtesy of Koolance

Continue reading our review of the Koolance EXT-440CU Liquid Cooling System!