In response to the overwhelming demand for a quieter MCP650, Swiftech is proud to introduce the new MCP655 pump, which features several key improvements.

Considerably reduced audible operating noise: the high pitch frequency of the MCP655 is now eliminated thanks to a new chipset controller.

Head and flow characteristics have slightly improved in the midrange

The MCP655 pump is a high reliability, high pressure industrial pump, featuring a 50,000 hour MTBF (5 year lifetime). Such reliability is afforded by the unique design of this pump, which contains only one moving part: the magnetically driven spherical impeller spins on a single ceramic bearing, thus extending the life of this pump beyond existing standards.

The pump is completely plug-and-play, and connects directly to any computer power-supply through standard 4 pin power connectors. It's compact design, quiet and powerful motor make it ideally suited for heavy duty cooling in environments where space is at a premium.

Flow - Pressure - Performance Chart

Note: 3/8" ID Conversion Kit is supplied unassembled.

• 50,000 hours MTBF (Mean Time Between Failure) equivalent to 5 years lifetime
• Superior 12 Volts DC convenience: plugs into the computer power supply
• The MCP655 can be used with full confidence in any MP servers, and high-end workstations
• Superior real world performance versus any aquarium pump we have tested to this date
• The high pressure capability of the MCP655 is particularly well adapted to high-flow systems using 1/2" ID or 3/8" ID Tubing
• Compact Design
• Quiet Operation even at high speeds thanks to the new chipset controller
• 1/2" barb fittings with 3/8" conversion system
• No maintenance when used with de-mineralized water, and anti-fungal additives (Swiftech HydrX additive is recommended)
• Quick installation with adhesive neoprene pad, or permanent installation with thru-bolts.
• Speed control for system fine tuning

Nominal voltage:	12 V DC
Operating voltage range:	6 to 14 VDC
Nominal power (@ 12 V):	24 W
Nominal current (@ 12 V):	2 amps
Motor type:	Brushless, microprocessor controlled
Maximum head:	10 ft (3.1 m)
Maximum discharge:	~ 317 GPH (1200 LPH)
Connection size:	1/2" barbs (3/8" w/ conversion kit)
Maximum pressure:	50 PSI (3.5 BAR)
Temperature range:	32 °F to 140°F (0 °C to 60 °C)
Electrical connector:	4-pin Power Supply Connector
Weight:	1.4 LB (650 gr.)
Impeller Housing material:	Noryl®
3/8" ID Conversion Kit
Included:	4 x 3/4" OD Clamps 1 Foot of 1/2" ID / 3/4" OD Clear Tubing 2 x 1/2" ID to 3/8" ID Line Reducers

09-13-2008
Reviewer: Erich (2)
This pump is everything that everyone says it is. however it is bigger than I thought it would be so be warned. I have a mid tower case and it barely fits but shouldnt be too much of a problem for more creative minds. Also this thing is SUPER quiet.

06-21-2008
Reviewer: Arrowslinger (10)
I run two of these in my system. One after 4 months cuts in and out and luckily, I have my temp settings to shut down far before any damage can be done. I did a simple fail-safe fix, I looped to together on the same system with 1/2 tubing and if the one quits, I still have a secondary backup

04-21-2008
Reviewer: Jay (1)
The pump performs well (except MTTF) and is ideal for my application, cooling performance is excellent -- however I am replacing it for the 2nd time in 4 years due to vibration. The vibration is highly audible seems to start after about 2 years of continuos operation. I am using 11 liters of distilled water with coolant additive in a dual WC XEON 2.8 GHz CPU system with 2 WC HDD coolers (10K rpm WD 74 GB) --running at about 5 degrees over ambiant.

02-15-2008
Reviewer: M4K4V3li (14)
This pump is powerfull I have two of them in a big loop and they both work flawlessly so far. You can feel the pressure in the tubes and its adjustable and surprisingly quiet. Recommend