Corsair H100i v2 features a powerful CPU paired with efficient cooling liquid.
Corsair H100i v2 features a powerful CPU paired with efficient cooling liquid.
Hello,
TL;DR
Liquid stays around 35°C, which is normal. The answer from Rubixs helped a lot. Reapplying thermal paste (not the first time) and securing the thumb screws without pressure made a big difference. I used just one finger. Temperatures dropped by about 7-8°C! Make sure to use quality thermal paste. A Thermal Grizzly Kryonaut is suggested for overclocking. I also shook the pump after mounting it off, though results were unclear. (Trying to get air from the pump to the radiator.)
Since there’s no cooling category here, this is my first experience with a water cooling setup. The Corsair Link is running and functioning well.
I installed the Corsair H100i v2 yesterday. The paste is correct, applied directly to the CPU, with no gaps and all four thumb screws tight. I observed the temperature staying around 30°C when idle and 35°C under load.
CPU temps are 25-35°C at idle and 65°C under load. Under load, there’s a noticeable gap between the hot CPU and the coolant in the Corsair. The liquid doesn’t seem to get much hotter. This seems unusual since it never exceeded 40°C even when the CPU approached its thermal limit.
I’m currently OCing at 4.7GHz. I stopped because the Corsair isn’t working properly or not at all?
Pump and fans are maxed out under load. The pump runs at 2970rpm, and fans spin up to 2820rpm – maximum. Still insufficient cooling.
Someone in the forum mentioned adding air to the pump. They removed the Corsair, placed the radiator above it, and shook it well. Could that be the solution?
Also, any recommendations for quieter (at least <80-60%) silent fans for the radiator?
I’ve read Noctua NF-F12 are good options.
Best regards,
flashybios
Hi,
Could you explain more about how you check the temperatures?
I’ve recently purchased the same cooler and OCd i7-6700k to 4.5GHz @ 1.3V. During stress tests, I see a maximum of 70°C with room temperature around 22°C. The coolant in the cooler stays below 35°C thanks to the efficient rad cooling.
For context, my previous setup was a 120mm rad CPU cooler, which kept temps well under 85°C during gaming.
Your CPU gets hot when the coolant stays below 35°C. You haven't used water cooling before, so this wasn't expected. Your room temperature is around 21-23°C. You're checking the temperature sensors with HWiNFO64; the BIOS shows fluctuating CPU temps like 30, 38, 33, 40, 36, 42°C, etc. The only consistent reading is from the CPU package itself. This suggests your CPU temperature is likely what you're seeing.
I'm quite frustrated if this setup works with Corsair cooling. If these temperatures are typical for water cooling with the Corsair H100i v2, I don't understand why water cooling would be necessary for an OC CPU. My Scythe air cooler managed 18-30°C during normal use and usually stayed under 5°C when idle. I only know about OC performance at 4.6GHz (vcore 1.406v).
Corsair can handle 35-43°C during normal use, but I'm running at 4.6GHz (vcore 1.406v) now. I'm seeing comments like "No CLC has ever thermally outperformed an equivalent air cooler." and I'm getting really upset about it. This was the main reason I chose Corsair – to cool my NB heatsink with a fan because I was overheating at default settings. I wanted better airflow over the motherboard. My goal was to remove the large CPU cooler that was restricting airflow. Now my motherboard is cool except for the CPU. 😠
The tools you're employing to assess your CPU performance include AIDA64 Extreme, Asus RealBench, and Prime95 v26.6. These are primarily used for stability and temperature evaluation. Most instances the temperatures reached approximately 65°C, which remains significantly below the recommended limits and represents the peak conditions observed in real-world usage—typically around 55°C. It's important to avoid overly tightening the CPU screws; doing so might cause complications. For temperature monitoring, you can utilize Corsair Link Software (http://www.corsair.com/en-gb/landing/cor...e=download). Simply connect the pump to the USB 2.0 header on your motherboard, and you'll be able to gather comprehensive data. I've conducted tests involving an 8-hour Prime95 v26.6 Blend stress test overnight, noting that temperatures fluctuated from 22°C at night to 12°C in the morning. The initial readings were around 65°C, dropping to 55°C by morning. I've recorded some test logs, but they're currently in CSV format; I plan to create a graph later showing average and maximum temperatures along with occurrence percentages.
Liquid temperatures aren't always accurate reflections of your CPU's actual load. The reported temps can change rapidly, and liquid's capacity to handle heat before warming up affects its performance. This behavior is explained in the watercooling section.
I use prime95. The smallest FFTs cause the highest heat.
Thumb screws are tightened by hand using both my thumb and pointer finger as much as possible, ensuring I'm comfortable (not applying too much pressure).
As mentioned earlier, I'm using Corsair Link and everything.
I achieved 5 minutes of stable performance at 4.6GHz with a 1.406v core, with temperatures around 60°C under load.
I also reached 5 minutes at 4.7GHz and a 1.475v core, reaching about 65°C, which is quite high.
I'm puzzled as people seem to easily get this CPU running at 4.8 or 5GHz, while my temperatures are soaring.
I can't proceed further with overclocking. The fan stops within the first couple of seconds.
I expected this watercooler to help push the CPU even more. I might be able to get an air cooler for half the price at the same temps.
What's the issue here? :/
If the liquid temperature is normal, I understand why the CPU is running so hot. It's an AMD chip that melts under load, but...
If I compare this with other users' FX8350 and H100i (from here
http://www.overclock.net/t/1318995/offic...wners-club)
) the numbers look different:
5.1GHz 1.46v load temp 61 (my goal lmao)
4.76GHz 1.53v load temp 69 (slightly higher than mine but only 0.055v difference)
5.1GHz 1.559v load temp 54 (ASUS board, still okay? he's over 1.55v and still cool? room temp 22, maybe he's just playing games?)
4.7GHz 1.475v load temp 47 (EXACTLY what I have; currently at 65°C on prime)
4.8GHz 1.44v load temp 58
4.6GHz 1.46v load temp 58
4.5GHz 1.43v load temp 59
The last four are all under 1.5v and below 60°C, but I'm well over 60°C.
My fans stop in prime, and my temperatures are too high to continue. The fans and pump are maxed out. The Corsair can't handle my FX-8350. My PSU is only bronze. The LLC is set to medium, and I can't increase it higher because I get a black screen. Should there be manual RAM timing for my 4x2GB 1333MHz model?
I only used the multiplier setting. Testing the FSB works, but one should reach 4.8GHz with the multiplier. Apparently, I can't do that thanks to Corsair -.-
Any suggestions? Why isn't the Corsair cooling properly? The air in the pump? It's three days old.
You might consider using a top-tier thermal paste, such as Thermal Grizzly Kryonaut, to slightly reduce temperatures, but... as Rubix mentioned, your AIO seems to be functioning perfectly. Temperatures and all.
Additionally, inquire with the developers about what they're testing. Prime95 is designed for heavy workloads, far exceeding typical daily usage. ASUS Realbench serves more as a "daily load" stability checker.
Apparently the blend test in prime is much more forgiving. I have always choosen small ffts since I watched in a yt video. He said 10-15min with that test show stability when testing OCs. The small fft test crashes after a few secs. I scaled up the vcore until I could run mine like 3-5min and then stopped because of the high temp. I don't see any reason to test hours like other users do. My games don't stress my hardware as much as 8h prime.
I'm right now @4.8GHz and 1.5v. If I test small ffts it instantly crashes but the blender test works for 2min. Haven't tested longer since the cpu is at 61°C which is considered the maximum temp for this chip. Usually it would throttle @61°C.
How do ensure stability? Let's say I want to run my system 5h gaming non-stop with medium high load. If could run 15min or more of prime small ffts I should be fine right? My temps just block this whole thing.
I've reviewed your sticky on closed loop water cooling setup. The temperatures align with the delta values in the charts and diagrams. On stock speed, 4GHz 1.28GHz it's around 23°C-30°C idle. With OC settings (4.7&4.8), I reach 38-50°C idle. While browsing and watching YouTube, it hits 60°C. Using Artic MX2 atm helps, but with the Scythe air cooler and MX2 I was 5-7°C lower than ambient during idle at stock speed. I plan to use a premium thermal paste like Vellinious. While the cooler is on, I'll shake it vigorously. 😀
I'm attempting to extract air from the pump to the radiator. If that doesn't work, I'll consider returning the Corsair unit and replacing it.
Thanks rubix_1011 I've reviewed your sticky on closed loop water cooling. My temperatures align with the delta values in the charts and diagrams. On stock speed 4ghz 1.28v it's 23°C-30°C idle. When OCing (4.7&4.8) I reach easily 38-50°C idle. While browsing and watching yt it's at 60°C. I use Artic MX2 atm. It's not ideal but with my Scythe air cooler and the MX2 I was 5-7°C LOWER than ambient when idle at stock speed. I plan to try premium thermal paste like Vellinious. While I have the cooler out I'll shake it, shake it, shake it.
I'm attempting to extract air from the pump to the radiator. Otherwise, the last resort is to return the Corsair unit. Trying to swap it out. You can't cool below ambient with air cooling, and water cooling only works if you're running a chiller. AMD processors don't accurately report idle temperatures, possibly showing you're running below ambient, but that's not true. It could be said that AMD's idle and near-idle temperature readings are extremely unreliable.