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.

Users are reminded that disassembling their pump for any reason, including for the purpose of upgrading the housing, automatically voids the pump warranty. (Excludes Swiftech Pump Accessories)

• 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

08-07-2012
Reviewer: Mouse51180 (18)
Have had one with no problem for about 2+ years now and just bought a second one to run dual pumps. So far, both are still running like champs!

07-13-2012
Reviewer: Little Heavy weight (4)
Still going strong after 3 years of 24/7 usage.

06-20-2012
Reviewer: Anonymous
This thing moves a ton of water. If the motor on my boat ever goes out I could probably hold this in the water and drive my boat. 580x2, CPU, 2 triple rads, this thing doesn''t even open its eyes or get out of bed. Amazing.

06-02-2012
Reviewer: stealthy (1)
In the last 4 years, I''ve had two of these pumps (MCP655-B). They push some serious flow throughout my entire LC loop and are very reliable doing so. The first one seized after about 2 years of 24/7 operation, and the second one seized last week after approximately the same life span. To top it off, I was able to take the remains of the old one and rebuild the new one, which is now back in my PC and functional again. You can''t go wrong with this pump. I rarely write reviews, and I am so pleased with this pump I felt the need to log in and write one.

04-04-2012
Reviewer: N/A (1)
Got this one march 2009. Slightly noisy (you can hear how pump changing RPM''s when you adjusting the speed)and really reliable. Itv''e been Three years, two PC cases and one cleaning maintenance,(it sucked a little Teflon tape by my mistake) this Pump are really piece of HARDware. My next build is this one only.