damien c Posted January 15, 2016 Share Posted January 15, 2016 Basically I have a few systems in my house 2 of them are cooled by H100i's. The first system is a 3930K based system which is overclocked to 4.0Ghz and the second is my system which is a 4790k based system running at stock speed. Now the 3930k's max core temps are 60c to 70c when using OCCT with AVX enabled, and the H100i on that has 4x Scythe GT1850 fans on it in push pull, with a ambient room temp of around 25c. My system which is the 4790k is where the issue presents itself, originally with the Corsair SP120 Quiet Edition, fans on the H100i I was getting max core temps of 85c which is no better than the stock Intel cooler I would suspect. Today I have swapped the fans to 4x Akasa Apache Black 1300rpm fans and the max core temps now are 81c which is lower but still stupidly high. The CPU Core Voltage is 1.250v set the bios as that is the lowest I can get with the system remaining stable. I have searched the internet for ideas on what could possibly be causing these temps and, eventually I found someone saying to put some washers on the back of the CPU Socket behind the motherboard on the backplate, for the cooler in order to make the backplate more secure. I had previously done that which knocked the core temps down to what they are now, as prior to that they were hitting 90c. I have checked that the pump is running and it is running at it's maximum speed according to Corsair Link when I managed to find a thread, with the registry changes required in order to get it to identify and pick up the H100i. I have purchased a temperature monitor for the room with my system in it, and it is currently 23.6c ambient temp and the cpu is basically at idle now whilst I am posting this, and the core temps are 27c 27c 28c 29c which seem really good but as soon as the CPU usage goes up when either, gaming or encoding a video the temps just skyrocket. Here is a video I uploaded showing OCCT running before changing the fans and then after. [ame] [/ame] I honestly cannot understand why the temps are so high, I know that Intel have had issues with CPU temps since Ivy Bridge, but these temps to me are shockingly poor and something that I would not expect from a AIO and I would expect them more from the Stock Intel Cooler. I have checked the mounting and the cooler is mounted securely it cannot be mounted any tighter than it currently is, without damaging the motherboard or the cpu iteself. I have checked the TIM spread after deciding this afternoon after posting the video and the TIM spread was nice and even, not to thin and not to thick. I have the fans plugged in to 12v molex adaptors with the fans on the H100i on one molex adaptor and then the case fans are plugged in to another, so they are not connected to the motherboard, the only thing connected to the motherboard fan headers in the little fan cable coming of the Pump/CPU block unit. I thought as well that it might be because of the heat from my graphics cards which are 2 MSI GTX980Ti Gaming Twin Frozr cards, but even with my old GTX780Ti's which exhausted the air out of the case, the CPU core temps remained the same. I thought it might be a airflow issue with the case, which previously was a Corsair Air 540 so I bought, a Phanteks Enthoo Primo case after selling some old hardware as I am currently on a limited, income due to being my mothers full time carer so I filled, the new case with fans but the CPU core temps remain the same, the only change that was made to temps was the GPU's are now 2c lower than in the Air 540 case. I was even considering putting a cold air duct with a my desktop fan connected to it, and then connected to the fans on the inside of the case on the H100i, and bringing in cold air from outside but the current outside temperature is around 7c, and I really don't want to run the risk of condensation building up in the pc. I do have the original packaged H100i fans, as well as some Scythe Kazi Jyuni 1900rpm fans that, I could try on the H100i but I really don't want the pc to sound like a jet getting ready for take off. I am pretty much all out of ideas, and I am basically now looking at building a custom cpu loop as I have currently sat in a box, 2x XSPC 360x30mm rads, 1x XSPC 240x30mm rad and 1x Alphacool 240x60mm rad with resovoirs, tubing, barbs and fluid the only things I do not have yet is a pump and cpu block, as all that stuff is left over stuff from previous builds. Does anyone have any ideas, before I go and spend up to £150 on a pump etc that I would have to save money for over the next 2 months. Link to comment Share on other sites More sharing options...
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