Originally Posted by Hawk777th
I have a 6600K that is at 4.5Ghz on a H100Gtx and before it never went above 50C on this cooler. It is now hitting 100C and throttling and I am not sure what is going on. The issue comes and goes. Some days when I boot it up it never goes above 70C under load then other days it will hit 100C on desktop???
I checked bios and on the MSI bios I don't see how to check if it is in DC not PWM? I have it set to 100% and tried both the CPUFAN and SYSFAN headers and Bios is showing around 800-1100RPM on the Pump? When I boot to Win 10 and load iCue it is showing the pump turning 3100Rpm???? Can iCue see something that bios can't as far as actual speed of pump? If I look at HW monitor reading it is agreeing with Bios...
What is normal pump speed for this AIO? Which number should I believe?
If the model is H100i GTX (CW-9060021-WW), the OEM is from Asetek and the pump speed should be around 3000rpm. Some motherboards will read the pulse wrong and show 1500rpm. I had two Asetek units (H55 / H75) and they both read 1500rpm on my Z77 motherboard. I don't know a way to confirm it, but if your model is "i", it should have Corsair Link I suppose, then Corsair Link should read 3000rpm, since it is a proprietary software.
You can trust the BIOS reading or HWMonitor, but double check with a few apps like HWiNFO64 and such.
What I suggest is to uninstall the AIO, buy a cheap air cooler like Frio Silent 12, Hyper 212, and test the AIO outside the case. Get a fan cable extension. Or you can even plug without an extension. Just get the pump near a fan connector like SYS_FAN or CHA_FAN and connect it. You can plug the pump with the computer on. Just avoid touching other parts. Just plug the connector. If you want to disconnect it, be careful to not just pull it and bend the motherboard connector or something. Go easy on it. And see if the pump is at 3000rpm or 1500rpm (depending on the motherboard). But the connector has to be set to full speed in the BIOS. Even if the pump connector has 3 pins. Some motherboards have SYS_FANs on a default 7v (my SYS_FAN3 on my Z77 was at 7v by default), and then the rpm will be lower.
These pumps can only run with the motherboard connector set to full speed (I’ve seen a few posts from Corsair engineers). You can change the speed with Corsair Link, but the connector needs to be giving a full 12v to the pump. Otherwise the voltage might vary or fluctuate and break the pump overtime.
If the pump is at 3000rpm, you can reinstall the AIO and reapply a good and reasonably priced thermal paste like MX4. If the temperature is still high (check with HWMonitor and HWiNFO64 as well), there is something wrong with the unit and you should contact the RMA. It could be a clog in the loop or something.
Also check the mounting brackets. Something might have broken and the unit lost contact with the CPU.
Also see if the fans are working properly.
I saw your post about a new AIO, and the market is a bit messy right now. With the new RGB trend, most AIOS are coming with low RPM fans. I think Thermaltake has a top of the line AIO with 1300rpm 12cm fans and 1.6 of static pressure. This is shameful. AIO fans need good static pressure, hence why a Maelstrom 240 is beating the Corsair 360 in some tests, because the Corsair fans are just low grade case fans. And they are charging premium prices for these junks. Most AIO brands are OEMs from Asetek. Aside Asetek, you have Cooler Master and DeepCool and some others, like CooLIT (that provides some Corsair OEMs as well). And the radiators might be produced in a couple factories in Asia for all these brands. At the end of the day, they will all perform under a 1ºC margin if you use the same thermal paste and the same fans for them all. The problem is, with the RGB trend, it is hard to find a standard 240 AIO with good fans and with a reasonable price. Or even a cheap 240 unit for you to replace the fans for new ones, like the Akasa Piranha (great cost benefit).
Just be sure to have a beefier motherboard if you choose a big Noctua cooler. I had an Assassin II and I did not trust my motherboard. I laid down my case (horizontally). I think was Tom's Hardware that only referred these big air coolers for the HEDT Intel motherboards. The Noctua NH-U14S is a good cooler and not a heavyweight. I used it perfectly with my mid tier Z77. There is also a new 12cm Noctua cooler on the market that performs very well.