So curiosity got the better of me today, and while I am not going to run it at this speed now, I just wanted to see what kind of temps I get and if my machine will easily handle 4.5 GHz.
I set it to 4.5 and had voltage at 1.28V at first, and it loaded Windows fine, but Prime95 errored out within about 3-4 minutes. I upped the voltage to 1.308V, and Prime 95 seemed happy for the short little time, but since this was more an experiment rather than a true stress test for stability, I stopped that and opened up IBT for a few runs at Very High settings.
It started running, and never gave an error or BSODed, but the first run was fine...the second run was fine, and had decent speeds. The third and fourth runs, however, were very odd.
They were slower (about the same speed as I get with the machine at 4.1 GHz), and the fans in my system kept speeding up and slowing down, as the load was not pegged at 100% as it usually is during an IBT test. It would load at 100, then drop to 95, load to 100, drop to 90...it was kind of strange.
IBT load temps on the second run peaked at 84C, which is hotter than I'd like, but not unexpected given my cooler. Prime95 was running in the low-mid 70s (and I'm sure actual use would be in the mid-high 60s). On the third and fourth runs, IBT peaked at 79, but due to the varying load would jump from mid 50s to high 70s.
What was happening with the run? While I've reset to 4.1 and plan to keep it there for the time being (don't need the speed...will use 4.5 as a nice bump in a year or so.), is this some odd instability thing with IBT, or was it possible just other CPU tasks were taking focus off of IBT?
I set it to 4.5 and had voltage at 1.28V at first, and it loaded Windows fine, but Prime95 errored out within about 3-4 minutes. I upped the voltage to 1.308V, and Prime 95 seemed happy for the short little time, but since this was more an experiment rather than a true stress test for stability, I stopped that and opened up IBT for a few runs at Very High settings.
It started running, and never gave an error or BSODed, but the first run was fine...the second run was fine, and had decent speeds. The third and fourth runs, however, were very odd.
They were slower (about the same speed as I get with the machine at 4.1 GHz), and the fans in my system kept speeding up and slowing down, as the load was not pegged at 100% as it usually is during an IBT test. It would load at 100, then drop to 95, load to 100, drop to 90...it was kind of strange.
IBT load temps on the second run peaked at 84C, which is hotter than I'd like, but not unexpected given my cooler. Prime95 was running in the low-mid 70s (and I'm sure actual use would be in the mid-high 60s). On the third and fourth runs, IBT peaked at 79, but due to the varying load would jump from mid 50s to high 70s.
What was happening with the run? While I've reset to 4.1 and plan to keep it there for the time being (don't need the speed...will use 4.5 as a nice bump in a year or so.), is this some odd instability thing with IBT, or was it possible just other CPU tasks were taking focus off of IBT?
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