Hi folks. (Sorry in advance for this longwinded explanation and question.)
I have a Rampage V Extreme (U3.1) using BIOS 3202. My CPU is the 5960X which I've had overclocked to 4.4Ghz (by using the factory overclock preset ... no custom tuning). Power supply: Corsair AX1200i. My cooler *was* the Corsair H110i GT liquid cooler. The case is a Corsair 900D with plenty of fans and ventilation. (I don't mind the noise.) The system is about 1 year old and has been working fine since I built it. During that time, my idle CPU temp has been around 39c, normal operations in the 42c-48c range, and only when I'm gaming or performing some very disk-intensive operation would it occasionally climb in to the 50's or very low 60's.
Just a few days ago, I went to turn it on and moments after the ROG logo appeared, the system simply shut off. A few subsequent attempts to boot the computer failed as well, each time it would simply shut down. Finally, on one attempt, it got as far as displaying an error message ... CPU overheat! This was strange because I had just been using the system the night before (and 365 nights before that as well) with no problems whatsoever. Although the H110 cooler fans were spinning, and the LED logo on the water block was lit, I suspected possible pump failure. I contacted tech. support of the system provider who sold me the cpu/mobo/ram/cooler bundle, and after some experimentation, they too agreed that it was likely water pump failure. Since the entire bundle is still under an extended warranty, they're sending me a new H110i cooler. BUT ...
It's still going to be a few more days before I receive the replacement cooler but coincidentally, a friend of mine happened to have a brand new Corsair Hydro H115i cooler, only a few weeks old and still boxed. He had purchased it quickly without taking the time to determine if it would even work in his case (it won't) and luckily he hadn't gotten around to returning it. So I bought the unit from him figuring that even when the replacement 110i cooler arrives, I can still keep it as a backup. I've installed it using the pre-applied thermal paste that comes with the cooler.
Now here's the problem. After installing the new cooler, I'm once again able to start the system and boot into Windows. Everything seems fine and the system appears to be running well ... with one major exception. My CPU temps are now running much higher than they were before this problem started. During boot up, I can see that my CPU temp is climbing into the 70's and 80's, and occasionally into the 90's. Once the OS is fully running and all startup apps have loaded, it calms down to the low 50's, which is where it pretty much stays when it's idle (about 12 degrees c higher than what it has typically idled at). When I start to run just about any app, it immediately climbs to the high 50's, low 60's. Furthermore, when I tried launching Doom (the new one) last night, the CPU temp momentarily climbed to the low 90s ... JUST DURING THE OPENING SPLASH SCREENS. (It settled down to mid 60's and low 70's for actual game play though, but that's still about 10 degrees c higher than Doom was running at prior.)
As another test, I turned off all overclocking on the RVE, thus setting the 5960 back down to it's base 3GHZ speed. No discernable difference ... perhaps just a few degrees lower across the board, but still very much higher than it used to be. I've tried booting into Safe mode ... No change whatsoever. Same high temps. I've checked for viruses ... none found (my system is reasonably well protected with Anti-Virus, Anti-Malware, Anti-Exploit, etc...) and my overall CPU utilization seems to be about normal, hovering between 0% and 3% during idle times. I also tried reversing the cooler fans (swapping intake vs. exhaust through the top-mounted radiator), but I saw no changes in CPU temp. The water block appears to be seated tightly on the CPU, but I haven't yet tried pulling it off and reseating it (so as to not disturb the thermal paste application). Oh, and I have the Corsair Link cooler settings at "Performance" mode, for maximum cooling.
So ... I'm somewhat at a loss as to what could be causing this sudden increase in CPU temp. With the exception of having upgraded my graphics card to an EVGA 1080 FTW (about a month ago), there have been no other hardware or major software changes.
Does anyone have any thoughts on what could be happening, or perhaps have any ideas as to what I might try next to troubleshoot the problem?
Thanks.
- Tom