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HELP! Bios shows CPU running faster than designed, is this possible?

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  • New Build
  • BIOS
  • CPUs
  • Processors
  • Systems
Last response: in Systems
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July 28, 2012 1:37:56 PM

Hi. I have just completed a new build PC, no Windows 7 installed as of yet.

The processor is an i5 3470 3.2GHZ 6mb Cache, Memory 8GB 1600, MB Gigabite Z77-DS3H, 90GB SDD.

When i loaded up BIOS for the first time, it shows my CPU to be running at "3428 mhz". (might have been "3628 mhz"), but the processor is only stated to be a 3.2ghz...? :o 

I read that 1000mhz is 1ghz, so why does BIOS show my CPU to be running at 3428mhz... this equates to 3.4ghz (might have been 3.6ghz) doesnt it? How is this possible? :pt1cable: 

Has my MB overclocked my CPU automatically? Surely it should read; 3200mhz (being 3.2ghz)... im worried its going to burn out, or its stuck in 'turbo mode or something'... (which apparently is 3.6ghz)

Anyone shed any light on this?

Thanks!

Tom

More about : bios shows cpu running faster designed

a b à CPUs
July 28, 2012 1:54:29 PM

Quote:
Intel Core BX80637I53470 i5-3470 Processor
Discover you PC's full potential with the Intel Core BX80637I53470 i5-3470 Processor. The Intel Core i5-3470 CPU features Quad-Core and Hyper-Threading Technologies that deliver fast and efficient computing performance. With this impressive processor, you can seamlessly multitask and finish your work ahead of time. Equipped with an LGA1155 interface, it ensures a stable and reliable connection to your motherboard. To top it all, it offers a whopping 3.20GHz clock speed and 6MB Intel® Smart Cache to experience unrestricted and uninterrupted performance; enjoy a Max Turbo Frequency of 3.6GHz with Intel® Turbo Boost Technology. Purchase the Intel Core BX80637I53470 i5-3470 Processor today!


A computer will run a processor at full speed when initially booting. Just a wild guess, but I imagine that's what you're looking at.
a b à CPUs
July 28, 2012 1:54:52 PM

Absolutely possible. Some mobos (ASUS in particular) overclocks slightly by default, probably to get better benchmarks. Either way, a non-K edition Core i5 has a few unlocked multipliers above max turbo, so running at that speed is fine. Also, the processor can dynamically turbo up to a few bins (few hundred MHZ) above the default when only 1 or 2 or 3 cores are stressed. This is by design.
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