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

04-13-2009
Reviewer: Nemisis09 (4)
I can not believe the flow out of this puppy. My loop consists of 1 dual 120 mm rad and 1 90 mm rad, the VGA block for my 4870 x2 and my cpu block. I have a bay res to see level and an internal res for easy fill. The liquid returns to the internal res so hard the liquid looks like it is bubbling. Definitely recommended this unit.

07-29-2008
Reviewer: milkmandan (8)
If your tubing system is 3/8" ID this pump will work because of the conversion kit, but they only converted the top tube to 3/8" ID. The tube coming out of the side is still 1/2" ID. You will need to purchase a reducer (1/2" ID to 3/8" ID) to make it fit in a full 3/8" ID tubing system.

05-25-2008
Reviewer: eRazorzEDGE (8)
this pump rivals any other pc water pump. great flow, great pressure and only about as noisy as a 120mm fan, if that.

05-17-2008
Reviewer: overclocker 101 (2)
nice pump! Not the best but real close. If you use a dremel and skinny sander top you can sand the outport on the inside of the pump and get slightly better flowrates and head preassure.

05-09-2008
Reviewer: jplace003 (3)
This pump has awsome flow, I had just this 1 pump on my loop that was 2 8800GTX''s and a CPU, 2 radiators and res.And the flow was awsome. I thought I would need 2 pumps but I didnt.