H100i v2 Stress Test High Temperature

[OnlyRiggs]

I'm new here so hello ...

 

Okay so I’m just wondering what exactly is going wrong with this cooler, I’ve seen numerous people run stress test benchmarks such as prime95 with temperatures maxing in the 80’s with my CPU + Cooler Config.

 

However, after conducting a short 7-minute stress test with Prime95 my temperature shortly exceeded (TjMax) for my processor. Which is 100 degrees Celsius.

Tjunction Max is defined as the maximum temperature the cores can reach before thermal throttling is activated to prevent damage.

 

NB: I’m fully aware stress tests are unrealistic loads applied to the CPU, this was conducted to set my upper limits for water loop temperature and custom fan curve.

 

After reading around there are a few people who have said their mounting screws were a little loose, I've checked and it seems stable, any suggestions on what this may be or if this is just normal behaviour for AIO's with P95.

 

Thanks in advance for any replies.

 

Test:

Idle Idle water temperature is at 31.7 Idle CPU average core temperature is 34 Ambient room temperature is 27 Load at idle is 3% Idle Fan speed is - 840RPM

Game Test 7 minutes Game CPU load Water temperature is 33.2 Game load average core temperature is 55 Ambient room temperature 27 Load at Game test 25% Game load fan speed is at 25% -840RPM

High Load Prime95 Torture Test 7 minutes High CPU load water temperature is 36.1 High CPU load average core temperature is 99 Ambient room temperature is 27 Load at high test 100% High load fan speed is at 2580RPM

Test conditions: I allowed temperatures to reach +/- 1 degrees Celsius of the idle temperature before running each test, load tests were carried out for 7 minutes each.

Set up Configuration.

N:B The Corsair H100i v2 is installed according to manufacturers instructions on the water block pump header on the board with CPU-FAN_Monitor Disabled in BIOS to prevent boot error message.

 

 

Below are idle temperatures + fan curve.

 

 

Set to 25% Fan speed until 31 Degrees Celsius.

 

 

Specifications:

CPU: Intel Core i7 6700K

CPU Cooler: Corsair H100i v2 Extreme Liquid CPU Cooler 2xSP120 Fans mounted in push configuration at top of the case.

RAM: 16GB Corsair 2666mhz Vengeance LPX DDR4

GPU: MSI GeForce GTX 1070 Founders Edition – Reference blower exhaust type.

Motherboard: Asus Maximus VIII Ranger ROG Board

Operating System: Windows 10 Home (64-bit)

Hard Drive: Samsung 250GB 850PRO Evo SSD

Secondary Hard Drive 1TB

Case: NZXT H440 2015 Black - three front mounted intake fans, one exhaust fan all running at 900RPM.

PSU: RM 650x Modular

 

 

 

[The Sloth]

RMA AIO, your temps are too high for a stock 6700k with an h100i or mounted it wrong and forget to put thermal paste. 

[Electronics Wizardy]

you probably mounted it wrong, check that.

[Daniel644]

also look at your voltage, my 6700k stock ran WAY higher voltage then it needed, that leads to increased temps, also use Aida64 not Prime95

[OnlyRiggs]

2 minutes ago, Electronics Wizardy said:

you probably mounted it wrong, check that.

It's mounted correctly as far as instructions are concerned. Though I might un-mount and remount to be certain.

5 minutes ago, nerdslayer1 said:

RMA AIO, your temps are too high for a stock 6700k with an h100i. 

That's what I had originally thought, I've had the machine running since last year and performs just fine under normal loads for games usually, although this time around that test shows significant rise for only 25% load. 

 

 

Thanks for the replies.

[OnlyRiggs]

27 minutes ago, Daniel644 said:

also look at your voltage, my 6700k stock ran WAY higher voltage then it needed, that leads to increased temps, also use Aida64 not Prime95

Thanks for this. 

Only just looked and it's running at 1.37V which is far too high for a simple 4.2 OC. I must have overlooked this whilst tweaking.

Going to retest with lowered voltage at 1.25.

[Daniel644]

Just now, PolymerPouch said:

Thanks for this. 

Only just looked and it's running at 1.37V which is far too high for a simple 4.2 OC. I must have overlooked this whilst tweaking.

Going to retest with lowered voltage at 1.25.

I ended up at 4.5 at 1.29v on mine, I started with 1.325 or something like that on the 4.5 overclock and the voltage drop lowered me like 5-10C.

[OnlyRiggs]

This seems a little more acceptable. Just goes to show how one tiny detail can make the difference. 

Thank you for the help.