Can I offer a 3rd and slightly less expensive option ? Cause those two are not even close. All CLCs suffer from the same weaknesses as every other CLC made to date:
- Low volume pump
- Thermally inefficient Aluminum radiators
- Use of mixed metals creates a galvanic corrosion cell, results of which shown here
https://martinsliquidlab.wordpress.com/2012/01/24/corrosion-explored/
- As corrosion inhibitors lose effectiveness (18 months) can not be augmented
- Can not be expanded
- High Cost for quality / materials involved
- No reservoir
Meanwhile, for $10 less, you can get a Swiftech AIO which
- Pump is proven unit with many years of usage in custom loops and 10 x the pump flow
- Thermally efficient copper / brass radiators
- No mixed metals reduces galvanic potential
- Corrosion inhibitors can be augmented if you are concerned
- Can be expanded ... add a GFX card w/ water block for example
- Cost appropriate for quality / materials involved ... every part has years of proven experience in custom loops.
- Reservoir
Here's a performance comparison between the older Kraken X61 versus the older Swiftech (Go to 23:00 mark)
https://www.youtube.com/watch?v=PYKdKVxbnp8
Kraken X61 = 69C @ 56 dbA
Swiftech H240-X = 64C at 46 dbA
So the Kraken leaves the CPU +5C hotter and to get that close it has to be twice as loud.
The CM LP comes in behind the Big Water 3.0 here:
http://www.overclockersclub.com/reviews/cm_masterliquidpro_280/2.htm
Which, going back to the video, the BW3 also loses by a similar margin as the X61.
With the Swiftech, adding a water cooled Asus Poseidon or MSI Seahawk EK X to the system requires little effort.