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



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
• 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 24 VDC
Nominal power (@ 12 V):	24 W
Nominal current (@ 12 V):	2 amps
Motor type:	Brushless, microprocessor controlled
Maximum head:	13 ft (4 m)
Maximum discharge:	~ 317 GPH (1200 LPH)
Connection size:	1/2" barbs
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®

09-13-2021
Reviewer: JM (1)
I''ve been runnning this pump almost nonstop for 6 years now...

01-08-2018
Reviewer: mcallisterbr (1)
I got this pump back on well here my order date Order Date: 06-03-14 and it still running strong it been moved from system to system and is still running strong as the day I got it flow is really good with this pump I plan on buying more for the other 3 desktop and plan on putting one on my XBox360 to replace what I have on it now and you can''t hear it run unless you put your ear to the pump.... This is a really good pump to buy buy buy!!!!!!!!!!

12-27-2013
Reviewer: Lieo (2)
despite its power, it runs really quiet. you can never hear it running even in an open case. you''ll hear the fans but not this pump. i have 2 240mm rads + 1 gpu block + cpu block and a dozen angled fittings and this can handle them at a running speed #3

12-05-2013
Reviewer: Great Pump. (2)
I have owned this pump now for almost a year and have liked it a lot. No serious complaints except for the fact that the fittings are not compression fittings. I had to use the plastic zips and zip ties together to eliminate waterleak at the fittings. Overall great.

10-01-2012
Reviewer: Archangel BT2] (1)
About to build another rig (6th one) so looking for more water cooling gear. Bought this pump TWO years ago, still running strong, and silent on max settings. Keeps my i7 920 running at 4.9 Ghz in addition to the motherboard water block on my X583XSLI board. No complaints. Would buy it again. and again....