Hi guys, I'm kind of new to this overclocking stuff but I know the basics. I have a 4790k which I overclocked to 4.8 using 1.31 V on an Asus Maximus VII Hero. When I check to validate the overclock on CPUZ it shows it running at the 4.8 GHz, but in task manager and even at the end of the Unigine Valley benchmark shows it at 0.8 GHz. I've read in other forums that it is a common problem, that task manager doesn't show overclocks how they should be. But I would really like to know whats really happening.
If cpu-z says 4.8 and the bios says 4.8 then its fine. Task manager and benchmark tools are not worried about showing 100% correct clock speeds.
If your computer is idling at the end of a benchmark then your cpu does not need to run at full speed and will run at a low .8Ghz to save power and output less heat.
Otherwise yes, TM is bad at reporting clocks, For the longest time it reported my 4.7Ghz clock at 4.5 while cpuZ was fine.
Ok, Thanks guys.
4.8 with that voltage is is really good for Intel. Hhat temps are you getting?
Task Manager is showing only the real-time clock. GPZ is showing the maximum possible clock.
You should get the AI Suite tools from ASUS if you don't already have them. It will show the real time clock and can be used for monitoring temps. Temperature is one thing you don't want to ignore on an overclocked CPU.
I have an overclocked i7-3960X that is running at 4.3 GHz on all cores. It gets pretty warm even with the best Noctua heatsink I could fit into my case. I went with water cooling to keep the CPU under 70C under full load. I guess you did a bit better with the silicon lottery than I did. ;-)
I'm using Maximus VI Hero with 4770K OC 4.6GHz. Power saving drops clock down to 799 MHz at idle and ramps up as needed. Allowing Asus AI suite power management to handle it all. At idle or low CPU usage applications CPUID shows 799 MHz and 4.6 GHz at max performance. Windows task manager and CPUID agree. I'm using WIn 8.1 CPUID (ROG eddition) v 1.70. CPUID is not static for me but updates all changes to voltage and clocks.
If you're new to over clocking I'd suggest using AI Suite. This app takes a lot of guess work and trial and error out of OC.
Hope this helps.
your pal, wikkett
0.8ghz!!! You broke the overclocking record :). Just kidding.