Originally Posted by wlw wl
Hello George and thank you for coming in!
It's nice to see something other than "There is no problem" or "You are overreacting" or "There is no design flaw, it's probably the fans making noises" coming from a REP and that's all I have been hearing this far.
I have been sharing my thoughts and doubts on these units but if you'd like my re-hashed input on the matter, I'll do that gladly.
There's also 50+ pages thread on the Corsair forum titled "H100 pump noise" and there you would find many people who RMAed the units 3-4 times to no avail (speaking of which, the supposedly introduced RMA test-before-shipping methodology must be flawed).
I have previously tried to talk to tech support about this but they weren't interested and replied that "it's bigger than you might know" etc. so I thought maybe it is, but I shared my thoughts with everyone anyway so someday someone might benefit from it - sorry if you didn't want the details of the design shared...
As for the RMA rates and adapters, I know that the volume of those units that you sell must be big so the RMA rates do seem usually low, but all I can say is that I have to his day sent out well over a hundred adapters, mainly for H80s and H100. Also, I'm not Corsair, so I couldn't afford to send all of them for free, so I have been asking to cover the shipping cost and the parts (to some extent) but if someone didn't they still got the adapter. Success rate of those adapters is somewhere between the 90% and 95% mark and while I have repeatedly highlighted that it's not a real fix - more of a patch - it works quite well for what it is.
I'd like to say thanks - it's kind of embarrassing that an end-user like yourself had to step up when something fell between the cracks, but thanks for doing it. If you don't mind, can you email me directly at firstname.lastname@example.org so I can ask you a couple questions and bring you into the loop on the proposed final solution?
I can tell you for sure that one of the reasons that the issue is hard to track down is that it normally doesn't present itself if your PSU is running the +12V rail at anything less than +12.2V. The problem is that the +12V rail is technically within ATX specification from +11.4V to +12.6V, so people could have a PSU running at +12.3V or something, and get a noisy H100 on it. Then they RMA the unit, and because the root cause is the PSU voltage being handled incorrectly, the problem shows up again for them.
This explains why people who get one bad unit could get another and another and another, but most people don't have the problem at all.
Since the launch of the H80/H100 late last summer, we've sold phenomenal amounts of these things. Add in H60 and the number's even higher. Luckily we're pretty sure we have a fix and I'll post it here when we do.