I want to make sure everyone is aware of an issue that has cropped up recently where some MCP600 pumps are dying after a few weeks of use. I have seen a quote directly from Bill Adams at Swiftech on this issue:
“The problem affecting 2-3% of the pumps has been identified as a failure of the thrust bearing (a Ryton washer) between the impeller and the front shaft support hub (the pump motors are fine)
- the hub is being redesigned to utilize a ceramic bearing face
In the meantime, failed pumps are being replaced with a new pump head assembly having a slightly reduced diameter impeller
- this reduces the deadhead pressure capability ~0.5m, the actual effect on the CPU temp will not be noticeable in most systems.
when the revised pump heads are available they will be provided to all who wish them w/o charge of course.”
from
here
So at this moment performance of the MCP600 may be slightly less than the pump that I have been testing. If so, though, you will be able to eventually get a new pump head from Swiftech at no charge that will return your pump to its rated performance.
I still am recommending this pump (and in fact I am running the MCP600 in my main PC), but I recommend that you ask retailers whether the pump is the original version, the temporary fix version, or the redesigned ceramic bearing face version. You want one of the latter two.
I can't fault Swiftech for the way they've handled this issue though. Bill actually even did a tolerable job of customer service (someone check the thermostat in Hades, please).