MCR220-QP-Stack

• The MCR220-QP features threaded hubs, compatible with 1/4" NPSM, BSPP, and G1/4 fitting (1/4" thread to 1/4", 3/8 or 1/2" barbs)
• The MCR220-QP Res features an integrated reservoir sufficient for years of operations without coolant refills, and threaded hubs compatible with 1/4" NPSM, BSPP, and G1/4 fitting (1/4" thread to 1/4", 3/8 or 1/2" barbs)
• MCR220-QP Stackable: using the "classic" body, the upper plenums feature two inlet and outlet ports opposite to each other, thus allowing to stack radiators together. This the perfect upgrade for existing owners of MRC220-QP radiators in search of Extreme performance. Key to the feasibility of this series, we also developped the ultra-short 1/2" barbs that are necessary to link the radiators together. Four of these fittings are included with the MCR220-QP-STACK.
  

The new 1-4"BSPP to 1/2" Barb Short fitting enables the linking of two radiators with a 120mm fan in between.
Dual and single 120mm versions are also available here (120) and here (320).

Features and Benefits

High Performance	Low noise
Dual 120mm fan form factor doubles the surface area available for convection of the heat into the air compared to single 120mm fan designs. The Quiet Power design yields superior performance compared to competing products in the same class	Optimized for 120mm fans with low to medium air output
Flat brass tubes and copper louvered fins, with brass plenum chambers and frame construction, for optimum thermal conductivity	Fin density optimized to reduce air noise.
Flat frame surface provides optimum seal to the fans	Built-in plenum chamber

• 1/4" NPSM threaded hubs (BSPP and G1/4 compatible) for maximum compatibility with various tubing installations
• Patent-pending Self purging plenum chambers design: when installed upright or on its side, air cannot accumulate in the plenum chambers
• Integrated Reservoir for years of service with coolant refills in the MCR220-QP Res version
• Threaded fan and case mounting holes for quick and repeated installations
• Slim design to facilitate installation, and reduce bulk
• No oxidation over time (compared to aluminum radiators)
• Beautiful and durable gloss acrylic paint finish
• Competitive pricing with same class radiators (single row, 2 pass)
• MCR220-QP-STACK version allows 2 or more radiators to be stacked to reach extreme performance levels
• ROHS compliant
  

Installation guidelines

The MCR220-QP and MCR220-Res can be installed using Swiftech's MCB120 "Radbox".

Radiator possible orientations:

MCR220-QP-STACK

• Vertical (inlet/outlet at top) : yes
• Vertical (upside-down): possible, but not recommended due to accumulation of air over time; we recommend using the MCR220-Res instead
• On the side: yes
• Horizontal (either face): yes
  

Performance Graphs

Effective April 2007, all MCR220-QP Radiators receive 1/4" NPSM hubs instead of 3/8" NPT hubs. In addition, a performance improvement is also implemented as described in the curves below. Please click HERE to access the performance curves of the MCR220-QP shipped prior to april 2007.

For reference, the MCR220-QP dual 120mm radiator shows ~50% less pressure drop than the MCR120-QP single fan version.


In the above curves, we show that the heat dissipation performance of the new generation MCR220-QP (identified by the 1/4" NPSM hubs) is approximately 10% better.

Example on how to read the above curve:
In a Swiftech® system flowing ~1.0 GPM we observe that with the fans used (*) running at 7v, a 210 Watts load -corresponding to an overclocked/overvolted quad-core Intel® processor can be dissipated with a mere 10 °C temperature rise of the coolant over ambient air.

Click picture to zoom in - Lower is better

The above curves are very similar to waterblock C/W data and can be interpreted in the same fashion. They will allow users to estimate the temperature rise of the water in the circuit, based on the coolant flow rate.

Manufacturer specifications for the fans used in the above tests

Single Fan specifications

Mfgr	Model	Current A	Speed RPM	Static mmH20	Volume CFM	Noise db(A)
RS	RDM1225S @ 12v	.23	2000	2.7	81.3	~36

Dual Fan, calculated specifications

Mfgr	Model	Current A for 1 fan	Speed RPM for 1 fan	Static mmH20 for 1 fan	Volume CFM Total for 2 fans	Noise db(A) Total for 2 fans
RS	RDM1225S @ 12v	.23	2000	2.7	162.6	~39
RS	WFB1212M @ 7v	~.13	~1160	~1.6	~94.8	~29
RS	WFB1212M @ 5v	~.09	~840	~1.1	~67.7	~24

• Fan noise estimate based on the following estimations: "If the speed of a fan is reduced by 20%, the decibel level will reduce by ~5 dB.", and "addition of a second equal source increases the sound level by ~3dBA".  

Specifications
  MCR220-QP

Width	5.0"	128mm
Height	11.2"	284mm
Thickness	1.3"	34mm
Weight	1 lb 12 oz	793 g

• 2-pass, single row construction
• Brass body and tubes, louvered copper fins
• Optimized fin-density for maximum heat dissipation at low noise
• Patent-pending self-purging brass plenum chamber
• M3.5 threaded fan and case-mounting holes
• Slim form factor 11.2 x 5 x 1.3" (284 x 128 x 34mm)
• 1/4" NPSM threaded hubs
• High-durability acrylic paint finish
• ROHS compliant