So, what's the best LCS for the Quad?

[catzilla]

I have heard differing opinions. I just opened mine up and it is a single pump Delphi that isn't leaking. It does, however overheat when stressed. I'm thinking it's time for a repaste.

 

[AphoticD]

I have heard differing opinions. I just opened mine up and it is a single pump Delphi that isn't leaking. It does, however overheat when stressed. I'm thinking it's time for a repaste.

I have the single pump Delphi LCS in my Quad G5 and it is running hot even after a repaste with Thermal Grizzly Kryonaut. I also opened the seals at the CPU coolers and topped it up with about 10mL of water because I could hear some air in the system while moving it around. This made a small difference, but I imagine the grill is probably clogged up and I think it really needs a full flush and fresh coolant. Once I get everything together I'll tear it down again and document my progress.

The reason I mention this is that I believe the single pump Delphi should be more than capable of cooling the Quad. I don't know much about these Liquid cooling systems, so correct me if I'm wrong, but I believe the single-pump unit replaced the dual-pump LCS toward the end of the Quad's production - what would be the reason behind this? Reduced energy consumption, improved cooling capacity or just cost saving?

 

[catzilla]

Well, according to my serial, this unit was produced in week 51 of 2005. After removing the LCS and processors i see no indication of coolant leaks. I do see a big blob of thermal compound. One thing that surprises me is that this machine is pristine, not even dusty even though the case is average at best.