MCR220-QP MCR220-QP Res

Designed in the USA
One or more Patents Pending
ROHS compliant

Introduction The MCR220-QP (Quiet Power™) series radiators are extreme-duty liquid-to-air heat exchangers designed to be used with two 120mm fans and specifically engineered for high-end liquid cooled Personal Computers. The Quiet Power™ technology is the result of months of research and development focused on optimizing thermal performance and audible noise characteristics with low to medium airflow types of fans. 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. Two form factor versions are available: 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). Dual and single 120mm versions are also available here (120), here (120-RES) 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. 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. 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). ROHS compliant

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. Click picture to zoom in For reference, the MCR220-QP dual 120mm radiator shows ~50% less pressure drop than the MCR120-QP single fan version. Click picture to zoom in - Higher is better 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 DIMENSIONS - CLICK TO ZOOM IN 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 MCR220-QP Res DIMENSIONS - CLICK TO ZOOM IN 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) Integrated reservoir & fill-cap 1/4" NPSM threaded hubs High-durability acrylic paint finish ROHS compliant