so whats the highest you'd suggest to keep it from degrading?
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so whats the highest you'd suggest to keep it from degrading?
What do you mean proper features?Quote:
Originally Posted by cadaveca
I'm not sure what others suggest, but i personally wouldn't run it over ~1.35-1.4v on air. :shrug:Quote:
Originally Posted by DamienKC
Quote:
Originally Posted by ThatGuy16
That's where I'm going to stay at. Only time will tell if that's correct.
If u have proper air cooling (not stock alu heat spreader...), 1.4V is the max. voltage you should give!Quote:
Originally Posted by PhilDoc
Here is mine:
Tough screen says its 1.360V, actually is 1.352V:cool:
[IMG]http://aycu28.webshots.com/image/430...3540138_th.jpg[/IMG]
My first chip seemed to have degraded after benchmarking at around 1.45vcore. But I can't define degraded.
The second one hasn't been over 1.3vcore and seems to be totally perfect, core temps are completely in sync, and they're scaling perfectly up and down with voltage adjustments.
The one I had jazzed the volts on was solid at first, but then after high vcore, Pll, vtt, nb, basically treating it like a e6000, it started to flake out. I had the 42c stuck core, the different vid, all that. But it could still do 4ghz @ 1.36v blend stable and seemed to perform perfectly well.
With the second one, I had a good idea that it was a good bacth so I decided to play it more careful. I looked at the intel specs and compared them to the headroom (over my vid) I allowed myself on the e6600 - up to 1.4v max. If I used the same percentage of headroom for the e8400 it came out to like 1.275v or something. So for this second one I'm giving it a max of 1.3v, but my 24/7 is at 1.28v.
Anyway, a long ramble but I wanted to share my experience in regards to what might or might not be damage to the chip. It seemed to be more of a damage to the sensor than to the performance of the chip.
Disclaimer - there's no logic to this, just oobservations. I think these chips are awesome if treated properly.
My "core" temps are stuck at 42*c idle, and on load one is 60*c while the other is 52*c.. its weird. Hard to say what to believe, while the "CPU" temp is 25*c idle and 43*C load, fluctuates accordingly to voltage changes and load.
Its all got me scratching my head :hitself:, i'm running 1.28v (bios) for 24/7 use also
Lets just hope that the 3 year warranty doesn't come handy :up:
Quote:
Originally Posted by mrcape
I agree completely. Fantastic chips, should have gotten an Intel long before. Strange thing happening to your chip though.
@laragirl, I agree, but I'm going to stay at 1.36 and what I've gotten thus far.
Yes, thats safe for sure, i am running at that voltage as well, even tough, IMHO 1.4 still okay:up:Quote:
Originally Posted by PhilDoc
I must say, I'm extremely happy with this setup after switching from my x2 5600+ with a 0.2ghz overclock :rofl:
So much more fun with this chip! :up:
of course, AMD need lots of work to catch up.Quote:
Originally Posted by ThatGuy16
Looks like I got a serious dud. I'm up to 1.36v, and still can't get it stable at 4Ghz. Utterly disappointed :(
Also doesn't help that I'm experiencing vdroop at certain vcore settings:
E.g. up to about 1.306v (BIOS), I was getting rock steady vcore. However, upon raising it above that - say 1.318v, I was getting some vdroop during loads. It would drop around .012-.016; very disappointing. I'm thinking this may be linked to the BIOS, or could just be my :banana::banana::banana::banana:ty chip. I dunno.
vDrop ist for a reason, its not a bug, as many thinks!
There are articels as well here on XS, explaining this, and u can google for it, tech guys from brands saying its on purpose...
Then again, 1.4V still good to go with proper air cooling!
Give it more juice!!
Well my point was that I was consistently getting no vdroop up until a certain point, and then all of a sudden it started showing up. Thought it was a bit odd...maybe I should ask in the DFI thread though.
*and again, the VID has changed to 1.0375. *sigh*
Good idea! I am curious what will they answer! Do that!:up:Quote:
Originally Posted by Mav451
In a nutshell yes.Quote:
Originally Posted by Zucker2k
CN
C1E, Speedstep.Quote:
Originally Posted by Zucker2k
Now wait a second!Quote:
Originally Posted by C-N
What do you guys, mean of "dynamic vid"?
The voltage the CPU gets under idle or load state, and because there is vDrop, this voltage changes!
OR the actual VID, that Core Temp shows? If thats changing, if it shows different value from time to time?
Pls light me up!:up:
yes, coretemp will show different vids depending on load or idle on a few board, c1e/speedstep dependant.
example, mine shows 1.1125 when loaded, but 1.0375 when idle, when these settings are enabled in bios.
Can't say yet. Never above 1.3625V should be pretty safe since that's the official max VID from Intel. Then they also mention 1.45V as absolute max.Quote:
Originally Posted by DamienKC
im getting idle temp of 16-18deg , 30 under load (35/35 - 49/49 underload for cthe cores)
is this possible at all...thats probably about the temp in this room
I played with these features and could not get my vid. to change whatsoever.Quote:
Originally Posted by cadaveca
Core temp VID.Quote:
Originally Posted by laragirl83
I have seen different VID's straight after a BIOS flash caused bye forgetting to disable C1E & EIST & I have seen different VID's when changing the same CPU between different board.
I had never noticed a VID change as a result of changing CPU vcore or overclocking etc until I put an E8400 in my DFI P35. When I noticed the VID change I rebooted to check my BIOS/CMOS settings to be sure C1E & EIST were disabled & they were, literally 10~15 minutes later my chip was dead.
CN
Scary stuff; well, I can confirm that my vid. is static. This leads me tentatively to the following conclusion: static vid.: :up: ; dynamic vid.: :down:Quote:
Originally Posted by C-N
what bios you running Zucker?
I have concluded that VID is not an intrinsic property of the CPU that is directly coded onto the hardware, but rather is a value that is inferred by software which calculates VID based upon another dependent hardware reading. unclewebb has provided technical details before; he may be the one to provide conclusive proof.
I have seen VIDs of 1.0675, 1.0375, and 0.9xxx (can't remember the exact value, but it was less than 1). Variables which I have noted causing change are booting into Vista vs. XP, booting at default settings after resetting CMOS, and core voltage.
CN's results aside, I am presently not concerned with this discrepancy.
0907.Quote:
Originally Posted by cadaveca
http://www.xtremesystems.org/forums/...d.php?t=173847
This one:
http://img171.imageshack.us/img171/1...rimepg3.th.jpg
4420mhz 1.528V :up:
I have tested the 2 in my bios as well.Quote:
Originally Posted by Zucker2k
My VID has never changed from 1.125, I have tested bios 903 and 907.
Under load or idle, C1E & EIST enabled or disabled the VID stays the same.
I have not seen any "degrading" , right out of the box I have ran this chip at 4.3GHz or higher @ 1.38v. I have primed for 24 hours blend and 15 hours small ffts. Ran OCCT for 12 hours and many sessions of 3DMark, chip is still rock solid and have yet to find any issues with it
Interesting...nice to see a few of us with the same board getting different results...easier to pinpoint problems this way, IMHO.
Just to confirm tho...multi cannot be set manually or VID change does not happen.
I thought it was weird to see the VID change while coretemp wqas running...we are not talking one boot, one vid, another boot, another vid, my cpu will change vid based on..well..i dunno..but while transitioning from idle to load, and back.
can you other guys confirm sensor data(stuck at one value, and which core, which value it's stuck at) and difference between core0 and core 1 temps? FPO/Batch, and pack date? my work week is alsmot over, so I'll be spending some time on this over the next few days, and will be trying my other E8400's out as well.
My chip's VID is 1.125 regardless as well.
Since the first thing I did when got this cpu, is find where I am stable at 4, 4.05, 4.1, 4.15, 4.2....by running orthos every night, and every day while at work....my combined total was 142 hours of orthos runs (recorded... actual may be little higher), 8 hours of linpack, and numerous 3dmark 6 and pcmark5 runs. All of that was at 1.3625 v and less (35hrs was at 1.3625v). Additionally, I ran one 15 mins bench at 1.53v to get sub10spi, and 4 hours of orthos at 1.39v for 4.2mhz.
I just ran 14 hours last night to make sure run at 1.53 for 15 mins did not change anything, and it did not.
I am done with orthos until month from now, I will check couple runs again then. But so far my chip seems rock stable, doing what I want, when keeping chip at/below max VID of 1.3625 (except couple short transgressions).
BTW...wish we could get a single page of data on specifics of what was done to each chip including mobo, vcore and ~time at vcore, batch#, dates, etc...where people saw degradation or death, and what specifically they mean by degradation, ie more volts for ?.
Okay, what about Q746???? then? Pack date is: 1/15/08. Any good?Quote:
Originally Posted by mrcape
It will go well as most of 746 (like mine)
Here goes my BIOS screen for 4GHz
http://aycu39.webshots.com/image/428...4645674_th.jpg
same pack date and stepping as mine. i'd tell you how it does but i need a cpu to flash the bios :[Quote:
Originally Posted by jcniest5
I know the core readings are most likely inaccurate, but on load they read a 7*c difference. Is this normal? The "CPU" (bios reading) says 45 on load while the cores are 52/59 on load.
I'm probably just paranoid :p:
No worries, it happens!:up:Quote:
Originally Posted by ThatGuy16
cold air
bugged P5K Premium pci-e @ 1x over 400fsb (boot at 399fsb and use setfsb for 3D)
Also limited by the ram 4gb gskill PC8000 (last set of crucial 8500 is dead)
http://img98.imageshack.us/img98/631...5mhznb1.th.jpg
http://img98.imageshack.us/img98/814...0mhznn9.th.jpg
http://img98.imageshack.us/img98/768...0mhzyl8.th.jpg
http://img98.imageshack.us/img98/674...0mhzxv6.th.jpg
1/15/08 should be better.
Quote:
Originally Posted by cadaveca
Don't have all the info right now as I am trying to get the chip OC stable on a different system including different mobo, but I can toss some info out.
E8400 Q743A728 pack date 01/04/08 and the vid has changed on the fly in coretemp from 1.100v to 0.9750v.
I also have stuck core temps and if I remember it was 43c on Core "0". I will edit my post when I can confirm, but that was on water and I dont think it goes that low now as it is on air, and reports rediculously high temps.
I have the chip under a Zipang and everest reports high 50c idle @4.0Ghz with 1.2625v and load in low 70c. I also have about a 10c differential between cores at idle and lowers to about 4c differential at load.
Thanks for your help Cadeveca :) How are the little ones doing?
Edit: Nice work Supertim0r :up:
3.8GHz piece if cake on 1.22V but need 1.35 for 4GHz so not bad but i have seen alot better.
Any ways heres my highest Super PI to date, Pretty sure my mobo is holding be back so hopefully will be getting new bios as soon as Chinese New Year ends:D
http://i38.photobucket.com/albums/e1...y2006/pi-1.jpg
And now some 3DMarks results with my 3870, could probably bench at higher Ghz but not to keen on frying me 8400 just yet
http://i38.photobucket.com/albums/e1...y2006/01-2.jpg
http://i38.photobucket.com/albums/e1...y2006/03-1.jpg
http://i38.photobucket.com/albums/e1...y2006/05-1.jpg
http://i38.photobucket.com/albums/e1...ffy2006/06.jpg
My vid has changed from 1.1125 to 1.050. Was testing earlier trying to find some stable settings when it changed.
Anyone else used speedfan to check the coretemps, mine are showing 5c lower than coretemp.
Speedfan idle at stock is about 25c with fans clocked down to about 3/5 speed.
Coretemp shows 31c.
my vid on both E8400 I have changed from 1.125v to 1.05v
this is P5K Premium to DFI Dark P35
Speedfan is still reading tjunction as 100, coretemp 105, if want to read the same, set speedfan>configure, advanced, chip/intel core and set to +5 on both cores.
Quote:
Originally Posted by jcniest5
I have a Q745 packing date of 01/15/08, not the greatest chip, does 4.0 at 1.36v
I've read the entire thread, as well as many more and thought I would add that my Vid in Core Temp has never changed,(1.125v). I do have weirdness as to temps tho. I water cool with water temps at 50 to 53f at all times. Bios shows 2C, SG shows 254c, and core temp has Core0 stuck at 40c, whereas Core1 seems to work with idle of 30C and 100% Load of 45C.
I did up my temp by 15 in bios, which gave me 15c in SG. I guess my only real value is Core Temp Core1/shrug. Tried all 3 bios for the board as well, so no change there. Just an info thread.
Larry
Well in searching about 6 forums, so far I have found subjective reports of the following degraded/dead 45nm chips...many link back to here:D
Most deaths occurred from running above 1.5v and/or benching at ?1.6+, and one died from running fsb 600 for 6 hours 1.4v max. Edit - now one degraded to point of no longer being stable at 4 at any volts, and his was at 1.41v for 3-4 weeks and never saw higher than 1.44 volts and 1.44 for only short time.
Degradation (needing more volts for booting or stability at same mhz), occurred so far at volts 1.4 and higher, many noticed after stress testing orthos/prime/occt at 1.45 and higher, but 2 so far degraded at 1.41 without other significant risk factors. Another report of degradation occurred ? after primed fsb 545 10 hrs and had 511x9 with vcore 1.45 for 1 hour.
I think I am going to keep 24/7 and stress testing at/below VID limit of 1.3625, and for any long stress testing I am beginning to wonder if 1.3625 is safe. Also would not be priming real high fsb, though i would not do that anyways, since I only prime what I would run 24/7.
http://www.csd.dficlub.org/forum/showthread.php?t=5556
E8400 primed 17 hrs at 8.5x500 at vcore 1.35
511x9 vcore 1.45 benching 1 hour
primed fsb 7.5x545 x 10 hours 1.4 vcore.
then 8.5x500 at vcore 1.35 was then only 1 hour prime stable
http://www.xtremesystems.org/forums/...173999&page=45
E8400 needed additional +.075V to be stable at 4ghz (needs 1.45v now)
Known – benching at 8.5x500 at 1.46v and benching 4500mhz at had to be higher volts.
http://www.xtremesystems.org/forums/...21#post2759421
post 1165 E8500 died
Known - benching 1.65v on air, running at 4300 on 1.5V.
http://www.xtremesystems.org/forums/...d.php?t=176287
E8400 Just says using 1.45 bios, 1.41cpuz ? load for 1 week, then became unstable,
http://www.thelab.gr/showthread.php?...0&pagenumber=5
5 E8400's and 2 E8500's post 82 and scanning through other posts
greek forum, 7 people most/all running orthos at 1.5-1.55 volts on water saw degradation within hours or days, and ? all degraded after orthos runs or benching? One saw degradation while running at 1.41 for few days, but now found he had benched at 1.8v in bios, 1.71measured, and now states his chip is burned? translation? dead? another 5 for total of 12 but dont have specifics on other 5 yet (large forum and they have had theirs longer than in US)
http://www.xtremesystems.org/forums/...postcount=3427
E8400 running it at 600 fsb for 6 hrs, no higher than 1.4V
http://www.overclock.net/intel-cpus/...thread-33.html
post 321 ES 9350 died at 1.55vcore, 1.7PLL, benching spi
http://www.overclock.net/intel-cpus/...d-out-yay.html
edit feb 12,2008: new one just went south after running at 1.41 x 3weeks, never went higher 1.44...cant do 4 stable anymore.
Several Qx9650 and some E8400 benching at high volts 1.6+ with dead cpus, I did not bother linking to, I think everyone understands the risks now at high volts.
CoreTemp is not reading the temps correctly on these new 45nm cpu's.
I'm using TT Ultra 120-Xtreme and while in bios the temps read 38c at 1.36v but in windows Coretemp read 61c for both cores and while running orthos it showing 2-3c higher. And that is impossible.
Right now while im typing this "Everst utility" reads my
"Cpu-29c
"Cpu Core # 60c
"Cpu Core # 60c
While running orthos, the only one that shows higher temp during load is the first one that shows 29c, up to 40c load running orthos while #1 and #2 only go up by 2-3c which again is impossible.
So I would suggest you all use Everest utility and only monitor the one that reads as "Cpu" only which 100% reflects the temp from the bios.
I assume when voltage values are given regarding the degradation of the chips that it would be the reported value, not the value set in the BIOS?
Interesting. I have a very similar batch (Q743A748), same pack date. I too get wicked high temps (but do not have the core differential). And I have also seen "on the fly" VID changes. Are we getting closer to knowing something?Quote:
Originally Posted by turtletrax
Well that first case would be me.:)Quote:
Originally Posted by rge
I will try to fill in the blanks:
511x9 @ 1.45 was ran for maybe an hour, if not less, for benching. The highest clock I stressed with P95 was 500x8.5, anything I did above that was for short periods of time.
When I ran that 545fsb I was using 7.5 multi for 4090mhz. Voltage was, IIRC, 1.4.
And just as above, my 500x8.5 1.35 OC lost its stability. I have got it stable again at vcore 1.376 loaded and slightly different gtl's.
Now to throw a twist into the story: I figured out that if I set vcore to 1.42ish or higher, NO MATTER what the core clock, it will not boot. This mobo has a vcore setting and a special add to fine tune vcore, so I set vcore to 1.35 and used the special add to get to 1.45 and then I was able to boot up at 500x9 again. Mobo or CPU? But still, my 500x8.5 clock requires slightly more vcore to be stable...
Is anyone having problems with Cpu-Z showing wrong multi while idling?
On idle or right now its reading 6x475 or 2850mhz but during load it jumps to 3.8ghz where it should be. I don't get it.
Heh. That's Intel's EIST. Disable it in the bios if you want your full speed all the time.
That's an E8500 not 8400 ;)Quote:
Originally Posted by rge
Yeh I knew it. But i tried disabling it but then my PC wont post and I have to reset the Cmos...Weird huh?Quote:
Originally Posted by AriciU
Of the two that had issues at 1.41, one specified 1.41 measured, the other one was translated greek and was so vague I was not sure if he was actually seeing degradation or variability or what.Quote:
Originally Posted by Capt Proton
The rest, at higher vcore, they do not specify, maybe some will chime in and say, but none could be below 1.4 real, and only one at 1.4 ran 600fsb for 6 hours.
thanks!Quote:
Originally Posted by gfourth
thanks, I fixed it...on the greek thread one or two may have been e8500 as well.Quote:
Originally Posted by AriciU
I'm starting to think these cpu's are cheap for a reason...
I kind of miss my AMD rig arghhh i had the best of the best , DFI Expert with Opty 165 with best stepping doing 2.9ghz at stock voltage...
Honestly, the amd rig felt a bit more responsive....
Why don't you run your cpu at stock? It'll still be faster than your AMD rig.Quote:
Originally Posted by RedBull78
I never said it was faster. I just think it was more responsive or snappier if you know wut im trying to say.Quote:
Originally Posted by Zucker2k
I know my current rig is much faster then my last. But again, i never had to worry about voltages or anything else.
My apologies to everyone on this thread, especially cadaveca, for ever doubting the degrading E8x00 processors issue. The problem is real. Now we just have to find out what a safe maximum voltage should be. Based on the Intel docs I'll be sticking to a maximum of 1.40 volts with my new Wolfie and keeping a close eye on any degrading of performance.
I've started testing with my IR thermometer pointed at my new E8400. I didn't want anything getting in my way of some accurate temp readings so I pulled off the heatsink for a direct shot at the cores.
Anyone that lives in fear when their CoreTemps hit 70C don't need to worry. That's nothing! :eek:
http://img233.imageshack.us/img233/7...twolfiesd7.png
http://img220.imageshack.us/img220/6...fearll6.th.jpg
When I tested my previous E6400 I found that the readings from my IR gun pointed directly at the IHS were exactly equal to what CoreTemp was reporting from about 47C to 85C where it would begin to throttle.
My E8400 is different. I've seen some users reporting maximum CoreTemps of 70C. When CoreTemp reports 70C for my E8400, the IR gun is only showing an actual temperature of 60C. At lower temperatures the difference approaches 15C. I think this will make a lot of sense for anyone that has gone from dual core Conroe to dual core Penryn on the same board.
The other test I did was I ran my E6400 and E8400 at the same MHz and core voltage. With a small hand held high speed fan pointing at the cores, the lowest I could get down to with my E6400 was 47C as reported by CoreTemp and the IR gun. The 45nm E8400 is smaller and more efficient so common sense says it should run cooler. CoreTemp was reporting 57C during this test but the IR gun was only showing 42C. 5C cooler makes logical sense. Penryn running 10C hotter than Conroe at idle makes no sense.
From this I would have to say to take the absolute reported temperatures based on the on chip sensors with a grain of salt. Intel does not document these sensors being used for that purpose. All of the chips may have a similar temperature curve to what I found but there is no guarantee of that. The on chip DTS was designed for thermal throttling and for showing distance to the throttling point which CoreTemp reports correctly. Just keep in mind that 50 units of headroom until throttling does not exactly translate to 50C of headroom.
Better yet, just forget about temperatures. That's the least of ones worries with these chips. There's a huge amount of temperature head room, even when grossly overclocked. With Penryn, it's voltage headroom that people need to watch. Sorry for getting off topic but I thought this is info that overclockers need to know. I plan to start a new thread tomorrow with more pictures and details. Hopefully if I haven't damaged my new chip too bad I'll be back with a nice OC in the near future.
unclewebb
Thanks for the info.:up:
Here's my 24/7 settings. I got some questions though. Do you guys think I need to reinstall my heatsink because 76 degrees is high! And are these bio's settings safe enough to last me 2 years? And what's up with the system information under OCCT? Its all wrong. Thanks.
http://i145.photobucket.com/albums/r...ockSTABLE2.jpg
and the bios settings.
http://i145.photobucket.com/albums/r...k/DSC00146.jpg
e8400 SLAPL q746A pack date 1/15/08
OCCT stable on 500x8 (4ghz) @ 1.312v
can't get it to boot at 4.1 no matter which multiplier, haven't messed with anything but cpu and ram voltage :)
temps are 42c idle / 63c load. think i have myself a good chip overall :) 4ghz isn't as high as some but it's at a decent voltage and temp at least.
i can't figure out what to mess with on my bloodiron to get it to boot past 4.0 though
Did you consider going 4Ghz the easier way (i.e. 9x multiplier) so your FSB isn't as high? I'm only pushing 1.296v for 9 x 445, and I have some room (9 x 451 OCCT stable). I'm sure you could get more that way.
I agree with you.Quote:
Originally Posted by RedBull78
My current E6420 on an Asus P5N-E SLI board overclocked to 3.4GHz just doesn't feel as "responsive" as my HTPC build (AMD X2 5000+, Gigabyte GA-MA69GM-S2H) at stock settings 2.6GHz.
Also my previous Opteron 146, DFI Ultra-D s939 build seemed "smoother" as well.
I dunno, it may be all in my head, but of course when it comes to actual performance in applications and games, my current build is faster.
For all purpose workstations (Office applications, etc) I would put together a cheaper AMD X2 system.
I had temperature and stability issues with my E8400 as well, but am still waiting for an updated bios release from Asus.
you should drop the VTT voltQuote:
Originally Posted by dropglock
Quote:
Originally Posted by RedBull78
I just switched from DFI Ultra-D and an Opty 185 at 3.1 and I don't really see that the AMD system was any smoother or snappier. Maybe its just me. I'm very happy with the e8400 and my choice of mb. As far as the degradation, its a little scary, but it appears atm that as long as you keep the vcore reasonable, you wont have any problems. Anyway, I hope you get things worked out. I'm pretty new at this, but I can help, let me know.
Heres my E8400, and what it can do.
http://i138.photobucket.com/albums/q...rydg/3813V.jpg
http://i138.photobucket.com/albums/q...dg/391328V.jpg
http://i138.photobucket.com/albums/q...dg/401352C.jpg
http://i138.photobucket.com/albums/q...ydg/41144V.jpg
And 4.2Ghz @ 1.48V, which I run 24/7, and I can't find the screenshot atm.
yeah can't boot into 4.1 on x9 either, i've tried 8 and 9. i've tested everything to 540fsb on x7 multi so it SHOULD do it...makes no sense to me.Quote:
Originally Posted by Mav451
Guess I am kind of stabilized at 4GHz...
FSB Termination 1.30V
NB Voltage 1.45V
http://aycu06.webshots.com/image/428...9772588_th.jpg
NP, hopefully we can figure out what the story is so others aren't so concerned...it's almsot looking like we might be able to figure out if a cpu is gonna degrade or not....Quote:
Originally Posted by turtletrax
Kids are good, driving thier mother up the wall, as always, thanks for asking!;)
Vcore way too high for 24/7 dudeQuote:
Originally Posted by g1raffe
I don't care if people think its too high, or if I think its too high(I recommend <1.4V for 24/7 use to other people), but CPU's still last ages, even with this voltage I'm sure it will last me for longer than I need it. Chances are I would have upgraded in <12months anyway.Quote:
Originally Posted by maxwolfie
Yes, it is also true... If there is no major problem with the CPU or really high voltage, you need to be very unlucky to have a wolfdale die on your hands...Quote:
Originally Posted by g1raffe
Well, its sure as hell it wont last 30 years with voltage around 1.4V, only 15 years, but who cares....?! Eventually you r going to upgrade in a year or 2 maybe 3! And? It will still work like a charm, u can sell it, do what ever u want!:up:
Still, it seems as though pushing it beyond 1.45v can degrade the CPU at a very fast rate (i.e. before you want to upgrade it in 12 months time), and even possibly kill it.
Yup, 15 years. It lasted me a total of 8 days :D First day benches at 1.65v and then 1.48v 24/7 @ 4300.Quote:
Originally Posted by laragirl83
I think you just got very unlucky. :ROTF:Quote:
Originally Posted by AriciU
Yeah, i know, i'm very unlucky with things like these. I waited for a RMA on my Asus for about 2 weeks, got tired of waiting, said screw it and got this nice DFI, re-did the wiring and everything, used the pc for like 5 hours or so and next day cpu was dead :D Now it's another 2-3 weeks waiting time while stuck on this POS P4 2.8 /w 512 ram.
i seem to have noticed something OCing my wolf...i can push the clocks high at low VCore but i have to pump up my NB (~1.6v) & VDIMM (~2.23-2.27v).:( did you guys notice this too? or i am just unlucky with my chip
You have a DFI? Well, I basically left NB at stock, and I'm doing just fine. vDIMM has to be that high though, since the board undervolts like crazy (2.23 >> 2.16 at load). I'm thinking you could probably drop your NB volts to stock and still OC just as well.Quote:
Originally Posted by emoners
My E8400 has done very well on my Blood Iron(God I love DFI's BIOS) It is good up to 4400MHz on air w/ what appears to be a FSB Wall but once I put it under DICE I was able to hit 5388MHz w/ it.Quote:
Originally Posted by DamienKC
1.74v on a wolfy works wonders:D
If you set your
SB 1.05v to 1.15
SBCore/CPU PLL to 1.75
NB Core to 1.61
CPU VTT1.4~1.5v
you should be able to go over 4GHz.
..... I think u just made the point here.:down:Quote:
Originally Posted by AriciU
My 8200
Q745
but what's wrong with coretemp?
it is very weird that my full load temp is 38 degrees
but idle is 35 and almost 10 degress different on those 2 cores.
ariciu you gonna rma proc?
way too muchQuote:
Originally Posted by White B
here VTT@1.13 for E8400@4050
fpo\batc?Quote:
Originally Posted by stephen23
q745 and:::?? :)
not with this board, lowest i think is 1.3Quote:
Originally Posted by karateo
also still no boot...i have to be doing something wrong haha.
Yes , he does . But it is very upset because it will take at least 10 days to change it . Maybe he will get a better one :)Quote:
Originally Posted by TEDY
must have been a bios issue, because after updating to the latest on dfi's site, i'm now happily running OCCT on this:
1.312v on load
I am thinking of buying a E8400, any good stepping you have to propose?
Quote:
Originally Posted by DamienKC
please settings bios
I think mine just degraded. What use to be stable 1 hours OCCT:
1.35 vCore
1.9 vDimm
1.350 VTT FSB Voltage
1.425 NB Voltage
1.6 SB I/O Power
1.05 SB Core Power
failed OCCT in 30 minutes now.
I am gonna try stressing with higher volts in certain areas and see if it fails again.
1.375 VTT FSB Voltage
1.15 SB Core Power
1.7 I/O Power.
PS: I never went above 1.425 vCore while testing. All I want is a good stable 4005/4008 ghz 24/7 usage since I am new to ocing and did not want to risk anything.
Does your FSB VTT need to be that high?
I have not read anyone degrading below 1.4...and plenty people priming long runs at 1.39 and below without issue.
Only ones between 1.4 and 1.44 had confounding issues, like running with high FSB 600, priming with 545 and ? corresponding high FSB VTT or without, and one Greek poster that degraded at 1.41...but turns out in another post he had benched with 1.825v bios few days prior.
But, if you are seeing degradation and not variability could it be your high FSB VTT and not vcore? Isnt 1.15 normal? I have my FSB at 1.15v. Edit..I think 1.10 is recommended for 45nm, where 1.20 recommended for 65nm. list of degradation post 1246.
Due to all the unknown issues I decided to drop my clocks and voltage to 4.1Ghz, which is acceptable, it does 4.1 on 1.32v Load, nothing special but its solid, gone just over 6 hours prime stable so far, which is PLENTY stable for me.
http://img132.imageshack.us/img132/4...establewg4.jpg
Well currently I raised 3 settings in the bios. Here is what I raised:Quote:
Originally Posted by rge
1.375 VTT FSB Voltage
1.15 SB Core Power
1.7 I/O Power.
and now it is 30 min stable for now. I still have 30 min to go to get 1 hour stable OCCT so we'll see. If this is stable I will lower the sb power and I/O power and stress again. But like I said my previous settings was stable 1 hour OCCT, then it failed in 30 min when I stressed again. I'll even stress with the settings that OCCT failed in 30 minutes again just to make sure.
EDIT: Just failed OCCT with 29 minutes to go at:
1.375 VTT FSB Voltage
1.15 SB Core Power
1.7 I/O Power.
The first one with 12/29/07 pack date was slowly dying. It did 4ghz with 1.36V, but it cannot break 4ghz barrier no matter how much voltage I fed it (I gave it up to 1.45V). When it did run at 4ghz, it only reached 27C idle / 55C load.:(
So, I got another one with 1/10/08 pack date. There were also 1/29/08 ones, but I went with the other. This one is doing 4.05ghz (9x450mhz) with 1.31V, but idle temperature is around 47C and max load is around 63C. This setting is stable for 6 hours of Prime95 and 2 hours of OCCP (is it true that 2 hours of OCCP equals 6 hours of Prime95?)
There was a nice deal on Kingston HyperX PC8500 2x1Gb at the Frys', and 4 sticks of them are running at 450mhz with 4-4-4-12 timing nicely.
:D He has speed step enabled, multiply His fsb by 9. by the look of the time He super pi'd Hes got 9x470.Quote:
Originally Posted by kitfit1
Not a clue about degration because ive not got these chips for that long. Gave mine between 1.80v and 1.95 for hours yesterday though benching on LN2. Prime on air stil runs fine at same vcore as before...
http://img.photobucket.com/albums/v6...500195vLN2.jpg
http://img.photobucket.com/albums/v6...e130vE8500.jpg
I guess what I meant was you are still in VID range of cpu vcore, but 25% above suggested VTT FSB. And ? if high VTT FSB is just as bad as high vcore, and ? of stress testing with high VTT FSB is especially bad.Quote:
Originally Posted by dropglock
Could you raise vcore a little, and drop VTT FSB to 1.25 or 1.2 and get stable. And then see if you get any further degradation.
Quote:
Originally Posted by dropglock
Maybe I missed something, but are you sure you have degradation. There's not much difference between getting an hour vs 30min. Maybe the ambient is a little higher this time. I can run Orthos for an hour at 4.3G at 1.35v vcore, but if I have the heater running in the room, it fails after 30min. Turn off the heater and let the room cool down and its back to an hour.