I4770K and H100i Cooler

[davidst95]

Hi,

I ran a few tests on my I7 4770K and H100i cooler and below are my results. The temperatures are higher then they should be:

3.5 Ghz
Idle
.9V
Corsair CPU - 28C
Corsair H100i - 26C
Gigabyte - 20C
Real Temp - 32C, 32C, 31C, 29C

Prime95 Blend
1.3V
Corsair CPU - 60C
Corsair H100i Temp - 30C
Gigabyte - 49C
Real Temp - 65C, 63C, 63C, 60C

Prime95 Small FFT
1.3V
Corsair CPU - 83C
Corsair H100i - 31.7C
Gigabyte - 74C
Real Temp - 86C, 85C, 84C, 79C


3.8 Ghz
Idle
.9V
Corsair CPU - 31 C
Corsair H100i Temp 27C
Gigabyte - 23 C
Real Temp - 33, 31, 33, 30

Prim95 Blend
1.415V
Corsair CPU - 65C
Corsair H100i - 29.6C
Gigabyte - 59C
Real Temp - 73C, 71C, 70C, 68C

Prime95 Small FFT
1.415V
Corsair CPU 100C
Corsair Temp 33.9C
Gigabyte - 91C
Real Temp - 104C, 104C, 99C, 95C
(drops down to 3.7 GHZ)


4.0 Ghz
Idle
.9 V
Corsair CPU - 33C
Corsair H100i - 29.4C
Gigabyte - 22 C
Real Temp 36C, 35C, 33C, 32C

Prime95 Blend
1.448V
Corsair CPU - 71C
Corsair H100i - 31.3C
Gigabyte - 62C
Real Temp 76C, 77C, 75C, 74C

Prime95 Small FFTs
1.415V
Corsair CPU - 100C
Corsair H100i - 33.8C
Gigabyte - 91C
Real Temp - 105C, 104C, 100C, 92C
(drops down to 3.78 GHZ)


4.2 Ghz
Idle
.91-1V
Corsair CPU 33 C
Corsair H100i - 28.8C
Gigabyte 23 C
Real Temp 35C, 34C, 34C, 33C

Prime95 Blend
1.448V
Corsair CPU 72C
Corsair H100i - 30.7C
Gigabyte 64C
Real Temp - 77C, 77C, 74C, 72C

Prime95 Small FFTs
1.415V
Corsair CPU 98C
Corsair H100i - 33C
Gigabyte - 91C
Real Temp - 105C, 101C, 100C, 91C
(drops down to 3.78 GHZ)


Could this be an issue with my CPU or Cooler? It's strange that the H100i doesn't change temperature. Thanks for any help.

David

 

[EarthDog]

It's likely a bad mount or thermal paste application.

Are you sure the pump is running and everything is hooked up right? Fans spin?

 

[davidst95]

Thanks for the reply. I just replaced the thermal paste and remount the H100i. The fans are spinning around 1200-1400 RPM. How do you know if the pump is running? The Corsair Link says the pump is running at 2247 RPM. Thanks again.

David

 

[EarthDog]

If the system doesn't come with software that shows it (corsair link?), feel the hoses and/or pump for vibrations.

 

[davidst95]

I just updated my previous reply. Corsair Link says the pump is running at 2245RPM and the Pump Fan at 4488. I'm not sure what those numbers mean. Thanks.

David

 

[EarthDog]

Pump and fans are running. Sounds like a bad mount to me.

When you reapplied the pastez when you took it off did was the paste across the whole whole cpu? You did take the plastic off the pump, right?

If you push down.firmly in the pump do the temps drop?

 

[Witchdoctor]

You did take the plastic off the pump, right?

Sorry ..........

I almost fell off my chair reading that. That would be a must do

Agree though, either you pump is not working correctly or a bad mount.

 

[Mandrake4565]

Actually ED those thems aren't bad at all, my 4770k on my benching loop, 4 gal distilled, 360 RX rad, 6 x 2200 rpm fans. Will get into the high 80's at 4.4 with 1.23 cpu v, with 70 f ambient temps running Prime Blend. I'd be happy with those temps on an H100i

 

[Witchdoctor]

Disagree, 100 + @ 4.2 ???

somthing isn't adding up. My TT water 2.0 Extreme holds my 4770K @ 4.6 in the 80's under a LinX load

 

[EarthDog]

Disagree, 100 + @ 4.2 ???

somthing isn't adding up. My TT water 2.0 Extreme holds my 4770K @ 4.6 in the 80's under a LinX load

Exactly. I run a 4930k with a kraken x60 past 4.5ghz.a slightly lesser cooler in the h100i should hold a 4770k to 4.5ghz under its throttling point.

What voltage is used for those clocks? What is your ambient temps? What does your case airflow look like and where is the h100 mounted?

 

[davidst95]

Thanks for the replies. I'm going to put the stock cooler on and see what I get (at least at 3.8 ghz). I hope the cooler is the issue. I don't think the store would take back a CPU.

 

[EarthDog]

Umm, let's fix the h100 dude. Answer questions asked to help get to the bottom of it.

 

[Mr.Scott]

Does the H100i temp not = the water temp?
Coolant temp will not move around as much as the core temp.

 

[davidst95]

Exactly. I run a 4930k with a kraken x60 past 4.5ghz.a slightly lesser cooler in the h100i should hold a 4770k to 4.5ghz under its throttling point.

What voltage is used for those clocks? What is your ambient temps? What does your case airflow look like and where is the h100 mounted?

The voltage is at 1.415 for 3.8ghz and up. The CPU won't boot up if I lower the voltage to 1.25 and 4.2 GHz and up. I have the Corsair C70 case. I have one exhaust fan in back, one intake fan on the bottom and two more fans in the front. All the fans PWN. I have the H100i mounted on top with the fans pushing air up into the radiator. I replaced the H100i stock fans with Noctua NF-F12s.

By ambient temp do you mean room temperature? If so, it's about 75F.

 

[davidst95]

Umm, let's fix the h100 dude. Answer questions asked to help get to the bottom of it.

Sorry I didn't see the other replies.

 

[EarthDog]

Good catch Scotty... If the OP gives us ambients (and answers other questions), we could find out, lol.

Loop temps are low though which, to me, means likely means poor contact on.the flu since the pump and fans appear to be working.

Edit: holy crap.. 1.4+ volts for 3.8ghz? Wow. That's the problem there. You should be at 1.1 or so that low...

 

[davidst95]

Good catch Scotty... If the OP gives us ambients (and answers other questions), we could find out, lol.

Loop temps are low though which, to me, means likely means poor contact on.the flu since the pump and fans appear to be working.

If you think it's poor contact I can try to remount it again. I'm using Artic Silver 5 thermal paste. Should I be using a different kind of paste?

 

[EarthDog]

See my edit... It's the voltage. My cpu uses 1.4v at 4.7ghz... No way the h100 can handle that much voltage with the 4770k. And no way should you require voltage that high at any of the clocks you tried.

The goal is to use the least amount of voltage possible for a given clock speed. Sorry I missed the voltage in the first post, LOL!

 

[davidst95]

I was using Gigabytes Easy Tune software and it set the Voltage at 1.4. I tried your advice and lower the voltage in the BIOS. I couldn't boot to the OS at 1.1V but when I set it to 1.2V and 3.9 ghz I am able to run Prime95 Small FFT test around 82C. I think you might of fixed my issue.

 

[EarthDog]

We did... always use manual voltage.

I'd try 1.25v and see how high it will go and be stable. I would imagine 4.2-4.4Ghz depending on the quality of the CPU. Keep the CPU under 95C while stress testing and all should be well.