Ska snart installera en H100i men nu får man nog tänka om hittade detta inlägg hos Corsair Tech Support
http://forum.corsair.com/v3/showthread.php?t=112396
Är det fler som har problem med H100i .....?????
TESTING PHASE 1
I did a multitude of tests which I detail below for you guys. Note that machine is integrated with H100 at the moment. So all H100i testing took place outside the case.
Test 1 - Corsair Link detection and LED test
Plugged in usb cable from H100i into USB2 MB header. Installed Corsair Link 2.1.7 and it picked up the two fans as well as a bunch of other system stuff. LED configuration works fine and also allows lighting to correspond to load which is nice.
The only issue I had is after rebooting a few times at some point the booting process became excrutiatingly slow. The bios screen would take ages and the windows startup screen would progress painfully slowly. I found that simply removing the usb cable instantly sped it up to normal speed. I don't know why this happened. Maybe it was some kind of conflict between the H100 already plugged in via the cpu fan header and the H100i plugged in at the same time via usb. If anyone knows what's going on here please let me know. I'm hoping once I replace the H100 with the H100i this will work fine.
Test 2 - H100i with no fans; pump only
No noise.
Test 3 - H100i with 2 H100i stock fans
Test performed outside case.
At max rpm while booting - NO GRINDING
At low rpm after booting - GRINDING
At explicit Quiet profile (lowest rpm profile) - GRINDING
At all other profiles faster than Quiet - NO GRINDING
On disconnecting fan cables - NO GRINDING
Test 4 - H100i with 2 H100i stock fans and 2 H100 stock fans
Test performed outside case. Exactly the same results as Test 3.
Test 5 - H100i with 2 SP120 fans
This test was performed by disconnecting the two SP120 fans already connected to my current H100 and plugging them into the H100i pump. Then I altered rpm profiles via link and found the results to tbe exactly the same as Test 3 with one difference - SP120 fans make marginally quieter grinding sounds at low rpm.
Test 6 - Pump noise
There is no noticeable pump noise unless you actually hold the pump directly onto your ear in which case there is a slight buzzing noise but as soon as you take it away from your ear it's inaudible so my guess is that this is normal behaviour and the noise would not be audible once inside your case.
Observations
The grinding only occurs at the lowest rpm profile. I don't know what that rpm boundary above which grinding doesn't occur but I can tell you that any profile above Quiet (which is the lowest profile) works absolutely fine.
An interesting finding was that once you'd gone higher than the Quiet profile, the next being Balanced, changing to any profile between Balanced and Maximum produced no difference in sound level. So starting from Quiet, you'd hear grinding, then switching to Balanced you'd just hear normal fan noise which would be quiet but then switching to say Maximum which was the highest rpm profile would produce no noticeable increase in noise though it would raise the rpm to around 1250 or so. This is good news. It shows the quality of the fans and proves that only the grinding is a problem.
The corsair link software does detect as many fans as you plug in (in real time) and allows you an impressive degree of system monitoring as well as configurability of your H100i fans. It monitors the cpu fans, the corsair ssd temperatures and also the gpu fans. For the H100i fans it provides a range of around five profiles as well as allowing you to set fixed and % based rpms.
Conclusion
The grinding issue although displeasing can be overcome by switching all fans to the Balanced profile. The Corsair Link software for the first few reboots detected the fans fine and did not affect the performance of the machine at all. But at some point the boot process and windows slowed down to a crawl until the usb cable was removed from the MB header. This is the only thing concerning me now. If I can get assurance that this wouldn't happen without both H100 and H100i plugged in then I would feel better and install the H100i. Any feedback from official sources and otherwise welcome. Particularly on what's going on with the slowdown and whether it was because I was using both coolers at once.
TESTING PHASE 2
In phase 2 of testing which I carried out tonight (2012-11-18) I wanted to see if I could first of all get corsair link to re-detect my fans as it was doing previously before it stopped working and I also wanted to see if with updated drivers I could avoid the excruciating slowdown that was occurring with the usb cable plugged into the mb header.
I updated *all* my drivers - bios, chipset, everything I could find off asus's website since this recommendation seems to appear so often in response to posts about problems with the h100i and corsair link. I then uninstalled corsair link and booted the machine with the h100i plugged in to the psu and the usb cable plugged in to the header. The boot was painfully slow. The windows logo animation took absolutely ages and froze occassionally but then continued. At this point I took the usb cable out. Once windows had booted the slowdown persisted. Simple things like windows minimising and maximising were very slow. I rebooted without the usb cable plugged in and everything was fine again.
Then I plugged in the usb cable after booting. This time the slowdown was not there. I installed corsair link and checked if it detected the fans but it didn't. Instead I got a windows taskbar notification saying that the device driver had not been installed correctly. I checked device manager and an HID compliant device kept continually switching between unknown and an HID compliant device with a working device driver. It was alternating about once every two seconds continuously.
At this point, for reasons unknown to me, the two fans plugged into the H100i stopped spinning completely and now there was nothing further I could do or test so I removed the h100i and packed it back into its box for return.
QUESTIONS/POINTS FOR RAMGUY/CORSAIR
1. There is a grinding issue with the fans at low rpm only in Quiet mode above which this problem does not occur.
2. There is a detection issue with corsair link where it does not always detect the h100i. Sometimes it does. At other times it fails to.
3. There is a serious resource issue being caused by the usb cable the root cause of which I don't know but it affects the entire software lifecycle by which I mean right from the point the bios appears through to the point where windows has booted and is being used there is a serious slowdown all the way through even at the bios level.
4. There is a serious resource issue in windows itself where Sierra2.GPU.exe and sierra2service are doing something and taking up resource. I'm not exactly sure what's going on here. With the usb cable plugged in there is definitely a slowdown but whether or not the cable is plugged in the link software does seem to take up more cpu cycles than anything else running on my machine though to be quite frank the Sierra2.GPU.exe was only taking up around 5% cpu so although that's more than all other processes I don't know why it would cause such a slowdown in general. Incidentally, I was thinking this may just be me but there has been another report of choppy/slow behaviour with link on this forum so may not just be me.
Feedback welcome. Although I will not be keeping this device for further testing because I cannot invest any more time in this endeavour it would still be great to get feedback from official sources as to what's going on and what solutions are being made available. Thanks.
