Overclocking an E8600 CPU

lshoff

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Apr 26, 2010
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Hello, I've got a EVGA NF68 680i chipset motherboard with all the latest updates.

I recently installed a E8600 chip, and tried to overclock it, (there are those who say that you can easily set the core clock to 4.0 GHZ). When I did I got instantaneous blue screen of death.

I tried also tweaking the voltage up a bit and then doing it, same thing.

I also noticed that the chip runs about 42-48 degrees which is a bit higher than some I'm hearing about (Stock intel Heat sink..).

Any thoughts on this situation?
 

fisshy

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Nov 25, 2009
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After the basic, generic guide, look for a 680i OC guide. The way the BIOS, particularly the memory, works is different from the other boards.

Go through the guides. Then take your core voltage off Auto and set your memory voltage to factory recommended values. Change the Memory Clock (or whatever your BIOS calls it) to either Linked or Unlinked with manual memory settings to twice the FSB. . At an FSB frequency of 333 MHz FSB clock of 1333 MHz), your memory clock should be at 667 MHz. Set memory voltage to the manufacturer's recommended value.

Download CPU-Z to check your FSB:RAM ratio. It should be a 1:1 ratio.

Now you can start working with the FSB frequency.

I could push my old eVGA 680i a little past 440 MHz. But the MCP temp was over 80 C.

The heatsinks for the 45 nm CPU's are just adequate for the stock speed. You need better cooling. For a serious overclock, you will need better than stock cooling. Here are three under $50 heatsinks that are pretty popular:
COOLER MASTER Hyper 212 Plus
http://www.newegg.com/Product/Product.aspx?Item=N82E16835103065
Sunbeam
http://www.newegg.com/Product/Product.aspx?Item=N82E16835207004
Xigmatec Dark Knight
http://www.newegg.com/Product/Product.aspx?Item=N82E16835233029

They all require a somewhat different approach to applying thermal compound.
Suggestions for applying thermal compound:
http://benchmarkreviews.com/index.php?option=com_content&task=view&id=170&Itemid=1&limit=1&limitstart=5

I have two Xig DK's (bought before the other two reached the market) that work pretty well on two of my OC'd Core2 systems.
And they are pretty large, so they might not fit inside your case.
 

lshoff

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Apr 26, 2010
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Thanks also to JSC, really appreciate your information. I think that Fisshy summed it up nicely..."WHOA"! I'll gradually add a better cooler to the chip, and then go into the MOBO/bIOS and explore some of the things suggested here.

Appreciate your help and time! Obviously, overclocking is new to me....