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Does this have C3 Stepping?

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a b à CPUs
a b K Overclocking
March 21, 2011 8:17:06 PM

Does this CPU have C3 stepping? http://www.newegg.com/Product/Product.aspx?Item=N82E168...

I have heard that the higher the number after the "C" the higher it can overclock, so I want a C3 product.

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a b à CPUs
a b K Overclocking
March 21, 2011 8:32:44 PM

Yes, that is a C3 stepping. See CPU world listing , HDZ955FBK4DGM is the CPU model number of that CPU.
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a b K Overclocking
March 21, 2011 8:37:06 PM

Thanks!
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a b K Overclocking
March 21, 2011 8:37:35 PM

Best answer selected by HostileDonut.
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a b à CPUs
a b K Overclocking
March 21, 2011 8:37:42 PM

HostileDonut said:
Does this CPU have C3 stepping? http://www.newegg.com/Product/Product.aspx?Item=N82E168...

I have heard that the higher the number after the "C" the higher it can overclock, so I want a C3 product.

You see where is says: Quad-Core Processor HDZ955FBGMBOX

Well, the MBOX shows that it's the C3 stepping. This is just a later revision that made the processor better, thus a higher overclock.

Processors with IBOX were the C2 stepping models.
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a c 117 à CPUs
a b K Overclocking
March 21, 2011 10:12:03 PM

HostileDonut said:
Does this CPU have C3 stepping? http://www.newegg.com/Product/Product.aspx?Item=N82E168...

I have heard that the higher the number after the "C" the higher it can overclock, so I want a C3 product.



I think Psycho dropped that little nugget of wisdom on you without any explanation, and while the statement is factually correct it ain't anywhere close to the whole story.

PhIIs come in 3 flavors: 1) C2 stepping; 2) C3 stepping; and 3) EO stepping (the Thubans).

The C3s have improved voltage characteristics. C2s and C3s generally over-clock the same but the C3 will get you there with less voltage. My understanding is that EO introduced lower-capacitance gating (requiring even less voltage) so EOs tend to go as high (or higher) than C3s with similar/lower voltages (and 2 more cores!).

Here is the BIOS and Kernel Developer’s Guide (BKDG) For AMD Family 10h Processors (pdf) with all the technical info you will ever want to know.

Now ... if you really want to cherry-pick an AMD processor head on over to Xtreme Systems AMD and learn about the OPN & serial numbers.

You may determine the week of the year, day of the week and (most importantly) the location on the wafer where the chip comes from. Chips from the center of the wafer are considered more 'cherry' and of higher quality.







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