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Core Voltage, Core Speed, Multiplier and Bus Speed changing

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Last response: in CPUs
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September 25, 2013 10:52:49 PM

I recently built my computer for gaming, video editing, and programming; however, I downloaded CPU-Z and I began to notice these items listed in the title changing. I am not an expert in CPUs, but I am certain that the Multiplier is supposed to stay the same, same with the Voltage. I hear people talking about this when OC, because you want to have a stable OC. I may be wrong, I may be right, but that is not the issue. I would appreciate if a person with the intelligence of CPUs could help me out. Here are some photos of CPU-Z with the different variables changing http://imgur.com/a/XsSrf#oA2KNjd
EDIT: If you can see the photos, press the cog sign in top right corner and press full screen.
My Specifications:
CPU: Intel Core i7-3770K
GPU: Sapphire Vapor-X 7950
Motherboard: ASUS P8Z77-LK
Memory: G.Skill Ripjaw Series X 2x4gb 1866Mhz
Storage: Caviar Blue 1TB WD
PSU: CX750M
Case: NZXT Phantom
OS: Windows 8 (64-bit)

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a b à CPUs
September 25, 2013 11:15:45 PM

Hanjohnbono said:
I recently built my computer for gaming, video editing, and programming; however, I downloaded CPU-Z and I began to notice these items listed in the title changing. I am not an expert in CPUs, but I am certain that the Multiplier is supposed to stay the same, same with the Voltage. I hear people talking about this when OC, because you want to have a stable OC. I may be wrong, I may be right, but that is not the issue. I would appreciate if a person with the intelligence of CPUs could help me out. Here are some photos of CPU-Z with the different variables changing http://imgur.com/a/XsSrf#oA2KNjd
EDIT: If you can see the photos, press the cog sign in top right corner and press full screen.
My Specifications:
CPU: Intel Core i7-3770K
GPU: Sapphire Vapor-X 7950
Motherboard: ASUS P8Z77-LK
Memory: G.Skill Ripjaw Series X 2x4gb 1866Mhz
Storage: Caviar Blue 1TB WD
PSU: CX750M
Case: NZXT Phantom
OS: Windows 8 (64-bit)


You're just seeing the effects of a feature called Speedstep. Basically, it allows the processor to slow down when not being used, causing it to run cooler. As long as the setting hasn't been turned off in your motherboard's BIOS settings, it is normal.

Casey
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September 26, 2013 6:28:31 AM

Thank you for replying so quickly! I just wanted to make sure that I didn't have a faulty CPU. I also haven't done much to my CPU in my BIOS, so that makes sense that it is at SpeedStep. Would you recommend that I turn SpeedStep off or keep it on?
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a b à CPUs
September 26, 2013 7:10:30 AM

If you are not actively overclocking, I'd leave it on. Heat is the enemy of processors, and Speedstep (or AMD's version Cool n Quiet) will cut down on the heat.

When you are overclocking and testing, the change in clock speed can possibly affect stability.

Casey
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