Tom's Hardware > Forum > CPU & Components > CPUs > Why my i7 860 can only get to 2.93Ghz?

Why my i7 860 can only get to 2.93Ghz?

Forum CPU & Components : CPUs - Why my i7 860 can only get to 2.93Ghz?

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xyj1232007   10-24-2009 at 02:56:50 PM

hey,i get my 860 yesterday and i enabled the Turbo Boost Technology in the BIOS.But i found even though im running the superpi or CINEBENCH(single cpu model), the 860 can only get to 2.93Ghz nor 3.46Ghz,Who can tell me why?

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Bronze CPUs badge warmon6   10-24-2009 at 03:31:19 PM

What program are you using to monitor the cpu speeds? If you just looking though system info that wont show when the cpu is running at faster speed.

I would use cpu-z to see the speed of the cpu. it shows the info in real time.

For stressing the cpu. Most people on here (including me) use prime95. Just tell prime95 to only work 1 thread be sure turbo boost is working.

------------------------------ I blow up your reality and make my own. :gun:
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xyj1232007   10-24-2009 at 03:44:49 PM

yeah,im using cpu-z,too.And i just tried prime 95 with only one thread,but there is no changing……

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xyj1232007   10-25-2009 at 02:42:54 AM

finally，i found a very very strange fact that the 860 can only be running at 3.47ghz when i set the AHCI model enabled.However it will make my computer note "CMOS checksum bad " when i reboot it.

Reply to xyj1232007
amdfangirl   10-25-2009 at 02:02:17 AM

Turbo Boost only overclocks until it hits the thermal limit specified by the CPU or the highest Turbo boost value. In a nutshell, if your CPU is very hot, Turbo Boost will not overclock.

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