I managed to get MIPS MCH 149 for my DFI X38 and after over a month of usage I can share my opinion about it:
- it is hard to use it with QuadCore CPU and high Vcore voltages because this waterblock also covers 2 CPLs (next to PWM) and CPLs almost burn while under load. Then PWMs become not cooled but heated by waterblock

Using my previous Q6700@3,6GHz/1,45Vcore after 15 minutes of 4xStressPrime load session (priority=10), PWM temps easily reached almost 70stC... waterheated
- after changing Q67600@3,6GHz to E8500@4GHz it is muuuuch better with temps - 47stC under Orthos load
Aha, I didn't use any AS5 or A.Ceramique on PWMs - just what left of PWM heatsink, maybe thats the clue...
You can always cut off this part of waterblock that covers CPLs as they can easily work with high temperatures with no danger - but they should not hinder cooling PWM
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