Intel software diagnostic for SB CPUs?

[VirtualLarry]

"It's strange that the Intel Diagnostic did not report an error. Mine, as I'm sure you have seen from my post, failed and the Diagnostic reported IMC at fault."

http://forums.overclockers.co.uk/showthread.php?t=18227516


So is there a software chip-level diagnostic program? That would be very interesting if true.

"I just been contact Intel customer support and they say both i5 and i7 2500 and 2600 chip must NOT go over 1.380v in the bios and the memory volt must NOT go over 1.65v and that's the safer one! "

Another good tidbit.

 

[Nemesis 1]

When ya get an E mail like ya say . Post it so we can see it . Than we can talk to the same people.

With the PLL Overvolt option added to new BIOS, most chips I have seen on forums are hitting 4.9-5ghz+ easily with 24/7 usable volts (max "Safe" voltage is 1.52v per Intel's spec doc here: http://download.intel.com/design/pro...hts/324641.pdf ). Now this is debatable as to how its written. As far as killing A chip . I don't believe 1 word out of anyones mouth who kills a chip as how high they push V. Some of these V I have seen are done by retards, No other word works . So retards it is.

 

[Nemesis 1]

Broken link . Try this The link above worked when I posted but somehow broke . Note its the same as working link.

http://download.intel.com/design/processor/datashts/324641.pdf

 

[Markfw]

Broken link . Try this The link above worked when I posted but somehow broke . Note its the same as working link.

http://download.intel.com/design/processor/datashts/324641.pdf

That says how to identify the VID of a chip. Not sure there will ever be one that high. It doesn't say directly thats the maximum. I would hate to guess by inference.

 

[mnewsham]

http://forums.overclockers.co.uk/showpost.php?p=18190523&postcount=103

"Hi there

Right guys myself and our technical guys have spent the entire weekend and this morning in discussions with Intel regarding the alarming amount of reports of Sandybridge CPU's dying and have been conducting our own testing as have Intel to find out what is a definite no no.


Sandybridge maximum safe voltages

Core Voltage - Not recommended too exceed 1.38v, doing so could kill the CPU, we therefor recommend a range of 1.325-1.350v if overclocking.
Memory Voltage - Intel recommend 1.50v plus/minus 5% which means upto 1.58v is the safe recommended limit. In our testing we have found 1.65v has caused no issues.
BCLK Base Clock - This is strictly a NO, anyone using base clock overclocking could/will cause damange to CPU/Mainboard. (Set manually to 100)
PLL Voltage - Do not exceed 1.9v!!



Processor - Basically we recommend customers not to exceed 1.35v to play it safe, all our bundles are set at 1.3250v or lower, any competitors offering bundles above 4.6GHz you should be enquiring as to what voltage they are using as we believe anything over 1.38v will limit CPU lifespan and anything over 1.42v will likely kill the CPU or severely limit its lifespan.

Memory - Intel recommend 1.50v plus/minus 5% which means 1.60v is the ideal safe maximum, but we have found in our testing all 1.65v memory is fine. We have also found most new 1.65v like Corsair XMS3 will run at its rated timings with just 1.50-1.55v which is well within Intel specifications. So people upgrading to Sandybridge you can still use your old DDR3, but we do recommend you run it at 1.60v or less. We are shipping most of our bundles which feature Corsair XMS at 1.50v-1.55v at rated timings. We've also discussed with Asus and MSI regarding voltages for memory and they also confirm in their testing 1.65v caused no issues with reliability.

Base Clock - To put it simple if you value the life of your components, do not overclock using base clock!

PLL Voltage - Again do not exceed 1.9v!


These are just guidelines we recommend you follow, if you want to push more voltage through your CPU's then just be aware they could die on you. Your warranty is un-affected and we will honor any CPU's that die, we just won't ask questions as to how you killed them.

Not all CPU's are as fragile as others, we have experimented upto 1.50v Vcore and 1.70v memory and had zero issues with reliability, so it seems some of fine when pushing hard.

"

Just thought this might be relevant to this thread

 

[Nemesis 1]

Lets see something official from intel on this . If Its as your saying These chips aren't safe for overclocking . I think alot of AMD supporters are reporting dead chips without ever having one.

 

[Nemesis 1]

That says how to identify the VID of a chip. Not sure there will ever be one that high. It doesn't say directly thats the maximum. I would hate to guess by inference.

Thats true mark . But one would certainly expect 1.45 V to be in the safe limit.

 

[aviat72]

Lets see something official from intel on this . If Its as your saying These chips aren't safe for overclocking . I think alot of AMD supporters are reporting dead chips without ever having one.

Safe for 33% overclocking....

The 32nm Xeons could hit 4GHz without too much hassle.
The SB are from the same process. So 10% more than that 4.4GHz should be reachable. Anything above that is a toss up.

To me the bigger issue is the memory voltage. Because SB has an integrated memory controller, the line voltage of signals being read from the memory will have an affect on SB itself. I do not know whether the line voltage (which signals 1) is bought down to the voltage of the CPU or is it at the voltage at which the RAM is being run.

 

[Nemesis 1]

Ya I agree on the memory voltage. The smart thing would be no more than 1.5 V.

On the CPU O/C the GHZ isn't going to kill the cpu its V required . I see alot of posted results . With 1.5+V. They deserve dead chips . and I hope the 2011 socket cpus do the exact same thing.

 

[aigomorla]

Broken link . Try this The link above worked when I posted but somehow broke . Note its the same as working link.

http://download.intel.com/design/processor/datashts/324641.pdf

Are you referring to page 78?

Becuase if u really think 1.5Vcore is safe.. lets see how long it takes b4 someone breaks one.

If anyone is going to ask me for my advice..

No more then 1.4vcore... seeing how the 980X's can take about 1.4Vcore fine on the new B2 stepping.
If you can bring down load temps another 10C from the stock air 1.4vcore, you can do an extra .5 to .75Vcore for a total of 1.45 or 1.475 provided your load temps are 10C lower then the stock sink with aftermarket sink.

1.5... i am gonna guess.. 4 months under constant load or 8 months with on and off's b4 u see degredations in the cpu.
*my guess*