The MCR220 -QP heat exchangers have been engineered to meet today's PC industry highest thermal loads, quality standards, and low noise requirements at competitive prices.

A single 120mm version of the MCR220-QP is also available here.

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.
Convenience, Reliability, Quality, Competitive Prices
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. 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).

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.

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

DIMENSIONS

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)
• The MCR120-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). 
• High-durability acrylic paint finish
• ROHS compliant