superuberziggy :
... 8700k ...corsair h100i v2 ... up to 70 when playing CounterStrike ... have reapplied thermal paste ... great temps for about a week ... CPU overheats very easily ... AIO has a hot tube and a cold tube ... seems like it's not the cooler ...
Q: How old is your AIO?
There are four problems with AIO's:
(1) All AIO's
will eventually fail. It’s not a question of
if; it’s a question of
when. Pumps have moving parts that wear out, so those which run 24/7/365 are prone to premature failure. AIO units are notorious for failures due to inferior pump quality, whereas custom loops typically use high-end pumps which have greater longevity.
(2) Coolant can evaporate over time due to "permeation" which can cause impeller "cavitation" due to bubbles.
(3) AIO's are sealed Closed Loop Coolers (CLC), which unlike custom loops, are not designed to be cleaned of sediments and refilled.
(4) Also unlike custom loops, AIO's use dissimilar metals (aluminum radiator / copper water block). This causes galvanic corrosion which produces sediment over time. Even new AIO's may contain sediment due to inadequate flushing after being manufactured. Some particles can become relatively large over time, which can create blockages resulting in flow problems.
Simply installing, moving, tipping, handling or otherwise disturbing the unit, new or old, is enough to dislodge particles, whereupon the next power-up, the now free-floating particles can circulate into the impeller chamber and restrict or completely stop the impeller. Since the impeller is magnetically coupled to the motor (no direct shaft), the motor will continue to run while the impeller is stalled or stopped. So
"hearing" the motor running or "feeling" vibration does not indicate flow, nor does Pump RPM in various software utilities.
Without an actual in-line sensor, proper flow is difficult to verify. Under normal operation, even at 100% workload, there should be only a minimal temperature differential between the tubes. However, if one tube is hot while the other is cool, it indicates little to no flow. This can be verified by checking the tubes with an infrared (IR) thermometer. Further, if the water block is hot while the radiator is cool, it also indicates little to no flow.
• The information you've provided points to an AIO restriction or blockage problem which is causing little to no flow.
Q: For troubleshooting purposes, do you have an air cooler to temporarily swap out with your AIO? Even the original stock cooler is good enough to change the thermal behavior, which will verify the problem as well as your troubleshooting steps.
I recommend that you RMA your H100i v2. Corsair AIO's have a 5 year warranty, which to their credit, they typically honor without difficulty. This problem will most likely be solved by an RMA replacement.
CT
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