The Wolfdale Vtt ( FSB Termination ) game.Place your bet!

[drjunk]

I guessed 12 days...

Ill be filling my core2duo voodoo doll full of pins tomorrow

[Alcibiades]

I voted a month. I really like what you're doing here man. There are so many useless myths out there, it's about time somebody either squashed them or actually bring them into the realm of fact.
Thanks for your work dude

+1

u r de cpu-killa

my guess 83 days 7 hours 51 minutes and 06.666666666666666666666666666666666666 seconds

but hopefully i'm wrong, but i'm never wrong, i thought i was wrong once, but i was mistaken

[BenchZowner]

Haha Alcibiades not bad for a general ( both on the humor side and the guessing )

Every system is up and running fine, so... I guess your voodoo dolls ain't working drjunk.
You only have some more hours to...conceive your target and win the bet

[drjunk]

Haha Alcibiades not bad for a general ( both on the humor side and the guessing )

Every system is up and running fine, so... I guess your voodoo dolls ain't working drjunk.
You only have some more hours to...conceive your target and win the bet

lol...i guess not.

Whats the voltage upto now?

[railmeat]

Haha Alcibiades not bad for a general ( both on the humor side and the guessing )

Every system is up and running fine, so... I guess your voodoo dolls ain't working drjunk.
You only have some more hours to...conceive your target and win the bet

benchzowner your tests are really good to watch and amazing actually to see these results.but in your best opion please explained what happened here?


quoting myself

vtt killed qx9650 and other 45nm cpus

i started this thread awhile back based on proven facts what happend to some cpus that were killed with hi vtt put to them.



http://www.xtremesystems.org/forums/...d.php?t=185943


FUGGER himself made a repost in my thread for ALL to see my thread and ppl to be warned.notice post #5 is fugger himself.i never question fugger.

"Repost

Even with a good sink, 1.45v is a lot for 45nm for long term survival."

"fugger"

[Pyroe_Inc]

I dunno 'bout y'all. But i for one would like to see this become "sticky sticky" while the project is running...
Great initiative BenchZ...

[dinos22]

still going

nice

[Ace-a-Rue]

benchzowner your tests are really good to watch and amazing actually to see these results.but in your best opion please explained what happened here?


quoting myself

vtt killed qx9650 and other 45nm cpus

i started this thread awhile back based on proven facts what happend to some cpus that were killed with hi vtt put to them.



http://www.xtremesystems.org/forums/...d.php?t=185943

these are my thoughts on this:

1) what if cooling was insufficient for the board and case...trapped heat kills!

2) bad supply with fluctuating rails can add to the problem

3) poor voltage regulation on the board for those who no longer have their buddies with them

4) design of the heatpipe system can be woefully inadequate...i removed the heatpipe on the IP35 Pro and it was almost pathetic in coverage for silicone and thermal paste or inferior TIM strips.

5) some users kill their cpus because they subject them to almost 24/7 folding at high Mhz (overclocking beyond reasonable limits) or Prime 95 so they can prove to the fold that their system is stable...anyway you look at it, high heat and very high voltage will shorten the life of ANYTHING!

[zanzabar]

maybe u just need a bad regulating board like a ds4/dq6x38 to kill it like anand, i bet the fluctuation would be more deadly than the voltage


edit- with my former rudeness to bench he may have me ignored, so could some1 quote me

[BenchZowner]

maybe u just need a bad regulating board like a ds4/dq6x38 to kill it like anand, i bet the fluctuation would be more deadly than the voltage


edit- with my former rudeness to bench he may have me ignored, so could some1 quote me

You're not on my ignore list.
As for the rudeness... I don't remember anything.
Even if you did, it's ok. We're only human beings

[janolle]

BenchZowner:
It's getting hard to check for updates on this thread when it grows. It would be nice if you could do some updates on the first page. Just a few bits of info like current voltages and procs would suffice.

[BenchZowner]

Good idea janolle.
I'll start later on, gotta hit the road again now.

[zsamz_]

maybe u just need a bad regulating board like a ds4/dq6x38 to kill it like anand, i bet the fluctuation would be more deadly than the voltage

if only it kills the cpu n not the memory too

benchzoner are those heavyduty cpus or reg ones

[Pyroe_Inc]

Any cpu's degrading yet?

[BenchZowner]

Every system is still running fine without any symptoms at all.
On the other side I am having a hard time typing now ( I twisted my finger today ).

[zsamz_]

Every system is still running fine without any symptoms at all.
On the other side I am having a hard time typing now ( I twisted my finger today ).

how much vtt volts you had on your finger

[ahmad]

I think if people realize the dangers of HIGH TEMPs then their chips won't fry. If you never check your temps and keep feeding volts something will go one day or another. Those testing chips should take note of this...

[dinos22]

I think if people realize the dangers of HIGH TEMPs then their chips won't fry. If you never check your temps and keep feeding volts something will go one day or another. Those testing chips should take note of this...

contrary to what you may think i've been told by a reputable industry figure that Intel is more concerned about volts mentioned in this thread than CPU temps so think of it what you will


systems still running huh?

[BenchZowner]

Yeap, killing a chip via high temps is nearly impossible nowadays.
On the other side, some serious voltage can do the trick ( 2.3Vcore should be good enough to kill a E8xxx in 1 hour or a bit more ).

[xTKxhom3r]

Yeap, killing a chip via high temps is nearly impossible nowadays.
On the other side, some serious voltage can do the trick ( 2.3Vcore should be good enough to kill a E8xxx in 1 hour or a bit more ).

DO IT!!!

[zsamz_]

DO IT!!!

do your first lol

dont do it benchzowner we all know it wont last maybe not even an hour lol

[Ace-a-Rue]

you guys, who are mocking this testbed, are freaking ridiculous!...GET SERIOUS!...this is a good test which will put to bed any concerns about HIGH voltages!

[MGreg]

Yeap, killing a chip via high temps is nearly impossible nowadays.
On the other side, some serious voltage can do the trick ( 2.3Vcore should be good enough to kill a E8xxx in 1 hour or a bit more ).

I was able to kill an e8400 (or atleast make it not post) on a asus rampage formula using 1.65v bios and water cooling. Did 48 hours prime95 at 4.25GHz, but wouldn't restart after.

Tried the cpu again 3 months later, still same issue, says corrupt bios, re-flash when installed.

on topic, it was using low 1.28v fsb term

I vote more then a month

[Alcibiades]

We'll start with a Core 2 Duo E8500 "Wolfdale" core 45nm processor and the Asus Striker II Extreme... with 1.6V FSB Termination Voltage ( VTT ) and a "reasonable" overclock with a ThermalRight Ultra-120. F@H or Gaming 24/7

setting up another rig as well,
ThermalRight Ultra-120 + Antec TriCool Fan @ Low
Asus Striker II Extreme
Core 2 Duo E8500 Q806A @ 4.4GHz @ 1.6V
2GB DDR3 @ DDR3-1852 8-7-6-21
GeForce GTX 280

CPU Voltage ( Vcore ) = 1.6V
FSB Termination Voltage ( Vtt ) = 2.0V
PLL Voltage ( Vpll ) = 2.8V

Same ... F@H and gaming 24/7.

This one should die easily as some of you say right ?

guess NOT

... since you have 3x systems might as well have one with high vcore, one with high VTT and one with high PLL while the other ones are at stock heheh

I've set up 3 new systems as per Dino's idea, each running a high voltage ( Vcore or Vfsb or Vpll ) for that purpose.
These 2 have been running for 1 1/2 days already.

DAY 16
Hard to keep track but I count 5 systems UP running ...
+2 more?

The electricity company looves you,
the environmentalists hate you,
we all salute you.

Quick question, don't know if it's a dumb one, but do you cold boot the test machines at all?
or flat 24/7 always on, no reboots?

[railmeat]

For those that are requesting proof that excessive VTT was the cause of the failure, just know that our conclusions are based more on empirical evidence than anything else; however, we have had more than one conversation with Intel CPU power engineers regarding the practical limit of VTT. In general, Intel does an excellent job of providing a wide selection of both technical and educational documents available for download by anyone directly from their website. Oftentimes significant technical insight can be gained by merely taking a few moments to read through some of these publications. As an example, anyone wishing to know more about the 45nm voltage constraints as recommend by Intel can find more information here – http://download.intel.com/design/pro...hts/318726.pdf

Intel® Core™2 Extreme Processor QX9000 Series and Intel® Core™2 Quad Processor Q9000 Series Datasheet (Document Number: 318726-003) was first published in March 2008. Section 2, Electrical Specifications, Subsection 2.6, Voltage and Current Specifications, Table 2-2, titled Absolute Minimum and Maximum Ratings, specifies absolute maximum and minimum ratings for this series of processors. It’s important to note that these values lie outside the functional limits of these processors (i.e. they may not be indicative of warranted operating voltages but are rather intended to serve as warning to those that would run their processors above rated specifications).

Table 2-2 shows maximum voltages for both VTT (FSB Termination Voltage) and VCC (Vcore) with respect to VSS (the processor power ground plane voltage, a.k.a. “ground”). In this case they happen to be equal in magnitude – 1.45V. If anything, this suggests that the use of high VTT voltages can be potentially as damaging, if not more so, than the sustained application of Vcore voltages above this same voltage yet many users continue to operate under the assumption that excessive VTT voltages should be less concerning than higher Vcore voltages.

The attitude that only Vcore can damage a CPU is one that has prevailed for far too long. Many users where initially “shocked” to learn that high PLL voltages (used to provide power to the complex array of circuits used to distribute the CPU’s common clocking signal) could permanently damage or cripple a CPU with little or no advanced warning. Even today there are those that outwardly deny the possibility of failure due to the use of VTT well in excess of Intel’s published maximum specification.

We’ve been trying for a while now to advocate a more intelligent approach to overclocking. Our loss should serve as an example for all as to the potential consequences of ignoring a little good advice. If nothing else, please don’t let our mistake become your mistake, too.

quoted from post 10....guess there wrong
http://www.anandtech.com/weblog/showpost.aspx?i=428