I guessed 12 days...
Ill be filling my core2duo voodoo doll full of pins tomorrow :D
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I guessed 12 days...
Ill be filling my core2duo voodoo doll full of pins tomorrow :D
Haha Alcibiades not bad for a general ( both on the humor side and the guessing :p: ) :D :rofl:
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 :p:
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"
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...
still going
nice :clap::)
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!:up:
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:
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.
Good idea janolle.
I'll start later on, gotta hit the road again now.
Any cpu's degrading yet?
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 :( ).
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...
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 ).
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!
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
guess NOT :up:
DAY 16
Hard to keep track but I count 5 systems UP running ...
+2 more?
The electricity company looves you,:up:
the environmentalists hate you,:down:
we all salute you.:rocker:
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?
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 :shrug:
http://www.anandtech.com/weblog/showpost.aspx?i=428