Overclocking Nehalem Detailed

jmke · 22nd August 2008, 23:24 [**jmke**]

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.

http://www.pcgameshardware.com/aid,6...verclo cking/

thorgal · 23rd August 2008, 09:00 [**thorgal**]

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

I hope they mean 1.3 or something ?

jmke · 23rd August 2008, 10:38 [**jmke**]

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

Kougar · 23rd August 2008, 19:36 [**Kougar**]

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