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Overclocking Nehalem Detailed

@ 2008/08/22

There had been a lot of rumors about the overclocking capabilities of the Core 2 successor. Today we learned that the Nehalem top model (default clock speed is 3.2 GHz) was running stable at 4 GHz. More OC details were revealed, too. As usual with chipsets, you need to adjust the multiplier. The QPI connection between the CPU and the chipset got a own value that you need to lower.

In the producer's test 1.7 volt were enough for 4 GHz. Furthermore the Nehalem is said to be quite cool during the procedure - air cooling is sufficient. According to the producer, more than 1.65 volt is dangerous to the integrated memory controller.

Comment from Kougar @ 2008/08/23

Was worried about this. From Anandtech:

Quote:

Nehalem’s design was actually changed on a fairly fundamental level compared to previous microprocessors. Dynamic domino logic was used extensively in microprocessors like the Pentium 4 and IBM’s Cell processor in order to drive clock speeds up. With Nehalem, Intel has removed all domino logic and moved back to an entirely static CMOS design.

Source

Comment from jmke @ 2008/08/23

I think they actually mean 1.7v otherwise the 1.65v is a typo too

I agree that these numbers are way too high for daily use

Comment from thorgal @ 2008/08/23

1.7 Volt was enough !? I bet it was enough :s

I hope they mean 1.3 or something ?

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