Overclocking Nehalem Detailed

jmke · 22nd August 2008, 22:24

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, 08:00

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

I hope they mean 1.3 or something ?

jmke · 23rd August 2008, 09:38

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, 18:36

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

22nd August 2008, 22:24	#1
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 78,422	Overclocking Nehalem Detailed 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/ __________________

23rd August 2008, 08:00	#2
thorgal [M] Reviewer Join Date: Sep 2005 Posts: 1,887	1.7 Volt was enough !? I bet it was enough :s I hope they mean 1.3 or something ? __________________

23rd August 2008, 09:38	#3
jmke Madshrimp Join Date: May 2002 Location: 7090/Belgium Posts: 78,422	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 __________________

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