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.

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

10-21-2011
Reviewer: twitchster (3)
I bought this for my first water cooling build and couldn''t be happier. This thing is completely inaudible. I have it mounted in a dual bay reservoir and the only way I can tell that it''s working is buy looking at the water moving at the top of the reservoir and my temps are still good. I literally can''t hear the pump running.

06-09-2011
Reviewer: chrisjczar (5)
Moves lots of water but this thing is LOUD! I''ve got 2x 120mm rads, CPU block and GPU block. Not only is it loud but goes slowly up and down in volume...

06-07-2011
Reviewer: shadow02 (4)
This is the pump I chose for my first custom water setup and it is amazing. Not too loud for such a large pump, but I had to shave down the barbs to get my hose over it. On the birght side, if your sump pump ever goes out, you have a backup!

04-22-2011
Reviewer: svthomas (16)
Pushes water hard! My res looks like it is bubbling it is coming back so hard! Love this pump! Not too loud either, especially considering its performance. My 7/16 tubing fit over the barbs perfectly.

04-22-2011
Reviewer: svthomas (16)
Pushes water hard! My res looks like it is bubbling it is coming back so hard! Love this pump! Not too loud either, especially considering its performance. My 7/16 tubing fit over the barbs perfectly.