yup and the slower the heat is removed from the heat source. physics 101 guys!Quote:
Originally Posted by unclewebb
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yup and the slower the heat is removed from the heat source. physics 101 guys!Quote:
Originally Posted by unclewebb
So I just finished adding the hd4870 waterblock and a second radiator (another 240) to my silent watercooling ..... the flow sucks of course, but this watercooling is able to remove heat from the ATI very quickly. 55š Full load using ati tool.
I still think this cpu is not right. Tomorrow i'll know for sure
Actually I set 1.53 in BIOS and not sure if vcore on CPU-Z or OCCT is right. Once again it's an OEM chip so I think it requires higher voltage than the retail one. My VID is 1.225 and I've seen other people have it at 4.0Ghz for around 1.3 or less while mine needs more than 1.4V to get it stable. And to get to the 4.2 mark I need like 0.1 more. But what surprise me is the temp is quiet good, as you can see I'm at 34 idle and 65-70 full load (44 idle and 75-80 full load in OCCT). I haven't tried to hit 4.4 or 4.5 yet but I think I should be happy with my chip for now. :DQuote:
Originally Posted by So3oL4Nu
What your temp like at 4.2Ghz?
Have'n fun with my new 8500 and gett'n back into overclocking after a year or so break, initial prodding looks okay. Not claiming its stable here, just use'n orthos as a load atm. Tomarrow if it pass's here i'll play with the memory and see how far i can go on 1.35vcore(my self imposed 24/7 limit), and to think i thought i was happy with my 3.6ghz e6600:rofl:
http://img177.imageshack.us/img177/1...dingvl9.th.jpg
E8500 Q815A557
DFI UT p35 t2r
Mushkin Accent 2x2gb 8500
Xig s1283
HD4780
Sig is outdated by about 2 years.
Just got a new E8500. Batch Q817A328
Not seen any Q817 chips yet so I'll post up how it clocks
i had a Q818. it sucked.. :/ well, by suck i mea 1.28 for 4ghz
1.28V for 4GHz and it sucked? Hmmm, can you say spoiled? :shakes:
Maybe it's your psu that sucks?
RX-630A ~30A
So far stable at 4.275ghz 1.44v...fails 4.3ghz orthos with 1.45v and thats the highest i want to go 24/7 on watercooling...Quote:
Originally Posted by gurusan
Clocks about exactly the same as my other E8500 :/ vid 1.225
Here is my latest result :shocked:
Never even think about this CPU can do this :
http://img512.imageshack.us/img512/7...212czn9.th.jpg
http://valid.x86-secret.com/show_oc.php?id=400440
I tell about this that CPU cant do more than 3650 MHz stable, but finally now i am happy with it, even it's not stable, but i can just write this post here :D
http://www.coolenjoy.net/bbs/data/ov...49/1.jpg_f.jpg
The new E8500 seutaeping E0
Q820A731
FSB600
http://www.coolenjoy.net/bbs/multi_p...ba5348d._f.jpg
http://www.coolenjoy.net/bbs/multi_p...2838_c203e17d.
E8500
Q811A622
http://www.coolenjoy.net/bbs/multi_p...2838_246ceb1a.
E3110
Q748AXXX
http://www.coolenjoy.net/bbs/multi_p...2838_e84babed.
http://www.coolenjoy.net/bbs/multi_p...2838_67789f66.
M/B : DFI DK P45 +
ok well i've been trying to make an automatic database...Just trying this out, we'll see how it goes.
Please fill out all fields. This is only for Wolfdale processors...
Go HERE to submit your clock:
http://www.jotform.com/form/82210321035
I will update the image here regularly but Go HERE for current results:
http://www.jotform.com/grid/82212635027
http://img528.imageshack.us/img528/6378/18686136cq5.jpg
good jop gurusan :)
Sweet! Nice work gurusan.
yeah i think i will start a new thread and keep the 1st post updated.
^^ i have a q817 and im at 4.2 with only 1.328v stable with orthos and prime
cool, submit it in the database.
*submitted*
Nice work gurusan.
Plz submit your E3110 - or update your signature - whatever fits!
k will do.
Also here's the new thread
http://www.xtremesystems.org/forums/...d.php?t=197824
Hm, interesting results in Wolfdale OC database. Are all of you guys running your E8400/E8500 over 1.4V (as you posted) for 24/7 since you posted they are Prime/Orthos/OCCT stable?
I'm running mine 1.44v 24/7....I honestly dont see it being in any danger of being damaged, also temps are very low...especially during normal usage. During gaming and such temps range between 35-40c
Mine can go 4,037 GHz at 1.376V. Under Prime maximum temps are 64-65 C, but while gaming they are 45-47 C max, under idle around 39-40 C, so i should go for 4,037 GHz with no fear of degrading my CPU? I didn't so far wanted to go higher for 24/7 over 1.304V because of Intel's information about max voltage of 1.3625V...Quote:
Originally Posted by gurusan
well if I were you I would definitely push it more.... :)
I want to. It tickles me all the time, but since I spent almost all my money, I'm afraid of degrading my CPU. Temperatures were never the problem for me.. It's almost like I'm looking for approval to do it...:)Quote:
Originally Posted by gurusan
Tested today 4.2Ghz ...my E8400 can do 4.2ghz @ 1.32Vcore...but i really need some water cooling system...77 degres under load are not so good :D...and 50 idle :D...i will try a push pull those days...
Mine is at 1.41v 24/7 and running BOINC the temps usually don't go above ~46*C
Orthos stable for 12+ hours small FFT my max temps were 56*C
I don't mind the voltage or the temps, really. I don't imagine I'll have this chip for that long, and I got it for relatively cheap. If this one somehow degrades, well, by then the E8500 E0 Stepping is under $200 and usually OC's better anyway. Or the Q9550 will have dropped in price. Lots of possibilities.
Under water cooling ? ...i like u're temps :up:Quote:
Originally Posted by zlojack
anyone know when E0 revision will be out? the new e8600 comes default with E0
quick question. I have not overclocked in a while, but want to with my 8400.
I have a Noctua NH-u9B
My 8400 is running at 45(core2) and 52(both under max with HWmonitor.
Would it be safe for me to OC as far as I can without touching the voltage? Or should I get a new HSF, and what do you suggest.
Just got a new set up with the E8400 and a Asus Maximus II Formula MB, but I'm having a problem with it. The CPU is stuck at 6 for the multiplier and I have already turned off E1A and IST. Anybody have an idea on if it is the MB or the CPU causing this problem? Also the CPU is running at 52 at idle, which seems a bit high, even for the stock cooler. :(
Thanks, yeah. Watercooling with the CPU, NB and Mosfets in one loop on a PA120.2 and MCP655. Pretty good:up:Quote:
Originally Posted by So3oL4Nu
I would imagine the retailers will be flushing stock on the old stepping before the new one gets in. I imagine that they'll start to show up in the next month and a half.Quote:
Originally Posted by WhiteFireDragon
For just the stock volts, you should be ok.Quote:
Originally Posted by AndrewL1950
What are you using to measure temps? Try RealTemp and make sure your heatsink is mounted properly. What voltage are you using?Quote:
Originally Posted by bikebuilderdude
As for the multiplier, I'm not familiar with that board, but look around here, there should be a good thread about it.
WoW, nice...i think i saw u're system in the WC thread...nice one :DQuote:
Originally Posted by zlojack
Just made this :
http://img291.imageshack.us/img291/3...4119ee0.th.jpg
I am so happy :D
I'm using core temp and bios at stock settings, but I'm more interested in why I can't get it to run at the rated 3.0ghz. :confused:Quote:
Originally Posted by zlojack
Spent last night tweaking and playing with voltages and didnt make any progress in lowering my vcore any further. Ran a few benches up to 475x9 but couldnt get anything over 4.2ghz stable. Might be able to make some headway once i reacclimate myself better with the motherboard.
Decided to let it prime away 450x9 5:6 1.3vcore(bounces around between 1.29-1.31 under load, no dmm readings). I guess i really shouldnt be upset.
http://img241.imageshack.us/img241/7...rimejh5.th.jpg
ya that sounds screwy perhaps another bios?Quote:
Originally Posted by bikebuilderdude
I was wondering what you guys think of my temps and voltages?!? I think temps are ok. But voltages seems to be a bit high compared to other E8400 owners. However, I have this board, mem and CPU for 3 weeks nog and have been tweaking since then to get it stable. I still have to get my memory stable tho.
Today I got my CPU stable at 4.05Ghz and maybe I can adjust vCore to a lower level but it won't be much I'm affraid. I don't really mind running a high vCore since I'm planning to buy a E8600 of Q9550 by the end of this year or beginning of next year. Nonetheless could this high vCore be related to a bad batch or should I change some other setting?
http://img505.imageshack.us/img505/7057/tempshg9.th.jpg
@ Gurusan
Damn good job on the database!!!! Nice work. :D
Quote:
Originally Posted by Mongoose420
Why ur saying 1,3V then CpuZ clearly shows us that ur setting is 1,35V at bios?:confused:
I have tested same motherboard and CPUz shows a little less than actual bios setting is. Metered by multimeter, true voltage is around 1,34V
Well, according to a lot of testing, the 45nm temp sensors don't do a very good job at idle. That's why a lot of people now use RealTemp, since he did a lot of physical testing and measuring temps with an IR thermometre to determine that TJMax is actually 95*C, not 105. Unless you calibrate CoreTemp to take into account the TJMax is actually 95 degrees.Quote:
Originally Posted by bikebuilderdude
What are your load temps?
E8500 (Q816A479) 10hrs+ Primestable at 9.5x421 ~4ghz 1.32v cooled by a Scythe Ninja Plus Rev. B with dual 12cm fans at 5v.
This one ain't so good, been testing for 3 days now, needs 1.38v+ for 4.2ghz+ :(
Maxed so far at 4.5ghz on 1.448v O_O
It is set to 1.300 in bios with no add. Can either believe it or not. No skin off my neck.Quote:
Originally Posted by Kristoferr
Booting my E8400 to windows as 4.4Ghz but couldn't get it stable since it requires a ridiculously more than 1.6V to run. :rofl:
[QUOTE=Pisklink;3204418]I was wondering what you guys think of my temps and voltages?!?
volts to high for 4.0 temp ok
CPU is not loaded anymore, with laod it could drop abit so it could be perfectly around 1.3ish... and not all boards are alike mate... they are like women... worlds apart sometimes yet sometimes so ressemblant :rofl:Quote:
Originally Posted by Kristoferr
Thought so, but when I set voltage any lower it would crash of not boot at all. I could post a list of my complete settings if that would be helpfull with getting my voltages lower?!?Quote:
Originally Posted by HDCHOPPER
@ Leeghoofd
:yepp: LOL!!!! :ROTF:
I hope someone can help me out here. I keep on getting errors in Orthos on the second core I think. At least the error message appears constantly in the lowest box (see picture). I don't know what to do to let it disappear.
http://img79.imageshack.us/img79/190...failcv6.th.jpg
These are my current settings when stress testing small FFT's:
MP 9
FSB strap 400
FSB 450
PCIE 100
DRAM 1350
Timings 7-7-7-20-2N
Static Read disabled
Dynamic Write disabled
CLK Skew auto
AI clock twister auto
Transaction booster auto
vCore 1,45
CPU GTL 0/2 auto
CPU GTL 1/3 auto
CPU PLL 1,56
VTT 1,28
vDRAM 2,00
vNB 1,57
NB GTL 0,61
vSB auto
LLC performance
CPU spread disabled
PCIE spread disabled
CPU Clock Skew 300ps
NB Clock Skew auto
All energy saving stuff is disabled.
I have same problem. My E8400 Q818... for 3,87 GHz want 1,4125 V, and he is stable on this settings...i try go to 4 GHz but at 1,45v he was unstable...I don't want go up with voltages... I think that 817,818... batches are worst then 815, 814...
here is SS, prime is runing +12H...what you mean about temp, volts...?
http://www.imagesforme.com/out.php/t124290_untitled.JPG
Could you possibly provide your settings as well?
A moment ago I was getting sick of trying for three week now so I decided to set my vNB to 1.64v (with active cooling), NB CLK skew to 200ps, CPU PLL to 1.6v and vCore to 1.4625v (in bios).
At this moment I'm running Orthos at small FFT's for one hour and will keep it running overnight. If it stays stable till tomorrow morning I will try getting my memory stable. After that I will try and reduce voltages. Am I correct that I can lower vCore by adding some GTL reference voltage?
So I just got Realtemp, and it's saying my CPU is at 33, 39. How can that be?
CoreTemp is saying it's at 49-52. Is CoreTemp that wrong?
Also for some reason, with my Intel 8400, Temp programs keep saying my GHZ changes from 2000 to 3000, and the multiplier keeps changing from 9 to 6. Is this just an error with the programs, or is my motherboard doing something stupid?
RealTemp is generally accepted as the most accurate for 45nm. After a lot of research, UncleWebb found that the TJMax of the 45nm was 10*C lower than was originally thought.
i have my 8400 at 4.6 with a 1.45 vcore...iv tried 4.7 but its a no go.... even with 1.5vcore....
at 4.6 with a 1.45vcore my temps at load with prime reach a lil over 70 but hey its cool its not like im ever going to have it at 100% anyways
it's prime stable? What's your batch number?
Alright, well after trying RealTemp, my cores seem to be at 33c-33c each, under idle. I assume it would be safe for me to overclock?
I still don't know why CoreTemp, and every other temp program was saying they were at 44-52.
WTH I already need around 1.45v for 4.05Ghz!!!! I don't know if it's due to a bad chip or my mobo. Maybe somebody can tell when viewing my batch number (see sig). When it can be confirmed that it is due to a bad chip I will certainly buy a E8600 by the end of this year. I have to admit I still have to fine tune vCore but it won't be much less that is something I'm sure of.Quote:
Originally Posted by xTKxhom3r
Because those other programs set a different Tj-max. They set 105 degrees while RealTemp has set 95 degrees. This is where the 10 degrees difference comes from. I thought that you can adjust the Tj-max setting in CoreTemp by hand in the option menu.Quote:
I still don't know why CoreTemp, and every other temp program was saying they were at 44-52.
Thanks for answering some of the questions I have guys.
I have my 8400 at 3.6ghz, on stock voltage. My ram is at 5-5-5-15 500MHZ X 2
The current ratio is FSB:DRAM 4:5. I have it unlinked in my bios.
My question is, since it's unlinked, would I still get better performance if my ram was 1:1? Would it be worth lowering it to 400MHZ X 2 to get the 1:1 ratio?
Since it's unlinked, I am not really sure if it's hurting my performance, or making it better.
Thanks for any answers.
Getting back into overclocking is taking a bit of re-learning to say the least.
It's hard to say from a distance. You should benchmark your current memory bandwidth and latency with Everest and SiSoft Sandra. Then take notes of the results and subsequently link your memory to the FSB. The advantage of linking your memory is that it runs under spec which means you possibly could lower your timings. You should run the same benchmarks again with the lower timings to see if it had any advantage.Quote:
Originally Posted by AndrewL1950
E8500 Q813A38x OEM chip from Ewiz
http://img137.imageshack.us/img137/9886/4250bestel2.jpg
time to do your gtl & skew tweeking :D from what eye readQuote:
Originally Posted by Pisklink
dont have your board so cant help ya thier
http://i239.photobucket.com/albums/f...9/Temps701.jpgQuote:
Originally Posted by AndrewL1950
As I already mentioned my E8500 (Q816A678) needs 1.376V for 4037 GHz (9,5x425). My CPU FSB 1.2V and nForce SPP 1.4V. CPU FSB is actually CPU VTT. I'm thinking of trying 8x500, but I guess I'll need higher CPU FSB voltage for that. How high for 24/7 is good to go with CPU FSB? In my BIOS settings 1.20V is green while everything over that is in red. I'm aksing 'cause I read that high CPU FSB voltages can kill CPU even before than voltage over 1.4V for vCore...
Thought so as well but at this moment I almost got me some settings which are stable without gtl and skew settings. I'm blend testing at this moment because CPU only and RAM only passed both for +8 hours in Orthos. At least I got some settings by then and can fine tune from there.Quote:
Originally Posted by HDCHOPPER
With LCC at normal instead of performance I need a whooping 1.5v in bios to get it stable under load!!!! :down: :( I got a vdrop of 0.043v and a vdroop of 0.024, together almost 0.07v!!!! :shocked: I think it is really bad and I'm wondering if this is only CPU related?!? :shrug:
I'm not completely sure but I thought 1.3v is still on the save side (read it on OCZ forum). In my Bios 1.3v is the first setting to become yellow and 1.4v becomes red.Quote:
Originally Posted by mskvorc1
Guys, is it possible to rma a cpu because the temps between the cores is rediculously far apart?
My idle temps:
Ok, here's the deal. Under Intel document about E8000 series processors I've found that max vCore and VTT are 1.45V (with vDrop) here:
On page 17. But under processor specific finder for E8500 says max voltage of 1.3625V.Code:http://download.intel.com/design/processor/datashts/318732.pdf
And what about VTT or CPU FSB voltage than? Is it 1.45V?
yesQuote:
Originally Posted by Zeus
e8400
Code = Q751A357
VID (coretemp 0.99.1) = 1.225
Orthos/game etc stable @ 4005 MHz, 1.304v load
It does 590 FSB (screen) on 1.304v load
http://i266.photobucket.com/albums/i...san/590FSB.jpg
Bench easily at 571 FSB, 1.304v load
http://i266.photobucket.com/albums/i...571fsbcopy.jpg
Absolute max against recommended safe 24/7 maxQuote:
Originally Posted by mskvorc1
Max vcore = 1.3625vQuote:
Originally Posted by mskvorc1
Max VTT = 1.15v
Absolute max vcore = 1.45v
Absolute max VTT = 1.45v
Intel states in the data sheet that anything over the 'max' value may damage the processor.
:eek: my E8400 Q748A142
Does max 5100mhz with tuniq tower 120
Valid Url : http://valid.x86-secret.com/show_oc.php?id=318677
Vcore :( set 1,75v in bios
How about this?!? When I set LLC to normal CPU-z reports 1.432v (in bios set at 1.475v) which corresponds to a vdrop of 0.043v and when under stress it reports 1.408v. This is a vdroop of 0.024v. In total it drops with 0.067v!!!! Isn't that way to much?!? :down: :shakes:
And are these drop mobo or CPU related?
Pisklink ...believe it's mobo
Quote:
Originally Posted by PytonOrm
hahahahaa how long did that sueeeeside shot last :rofl:
exellent man just exellent !!
It wasn't the bios, but the mb and cpu combo. New one works great. Thanks. :cool:Quote:
Originally Posted by HDCHOPPER
Could you give an indication if a total drop of 0.067v is much or not? And how can I determine if its mobo related or not because at default settings it works fine?Quote:
Originally Posted by HDCHOPPER
I was benching with MSI HWs last week... It remains me some dice so I did a quick bench ( only for 15 min. :( ) with P5Q Deluxe + e8500 (Q811A681)... I couldnīt get a good temps, but here are the results at -25C :)
http://img228.imageshack.us/img228/6...mhzcpuzwx9.jpg
Super PI 1.5 8.843s
http://img98.imageshack.us/img98/564...pi88kf4.th.jpg
max. FSB 640MHz
http://img112.imageshack.us/img112/3...640cpuzzt3.jpg
I have one question, which max voltage is save for 24/7? I set 1,425 V for 3,87 GHz, is that to much?
I have a larger vDrop and vDroop on my Q814 (low vid) compared to my Q817 (high vid). So it has to be somewhat processor related. The difference was from almost no drops at all to 0.06-0.07v combined.
Quote:
Originally Posted by H4wk
1.4 pretty safe and 1.45 max (going by intel)
janolle .. eye had both 817&814 both drooped the same on my mobo .04 v (under load)
the drop was the same also (from bios to windows)
needless to say sold the 817 ;)
here is my 24/7 im sure i could do alot better with some better ram!
http://i194.photobucket.com/albums/z...Guage/4000.jpg
Updated
FPO#:Q807A185
http://img141.imageshack.us/img141/7...al90vk3.th.png
;)
I got a question guys. So I overclocked up to 3.8ghz. I actually lowered my voltage compared to what it came at stock. I ran OCCT for an hour, and no errors at all. I was told running OCCT for an hour, was as good as running Prime95 for 24. I have a picture of everything. Could somsone let me know if this is fine, and if with these temps it would be safe to push it more? Under max load using OCCT the temp went up as high as 67c With Vdroop my voltage goes down to 1.272
http://i182.photobucket.com/albums/x46/Trax416/test.jpg
Don't believe everything you read in a forum! I'd much rather be 24 hours Prime small FFTs stable as compared to 1 hour OCCT stable. The important thing is to be stable for whatever you use your computer for. A game crashing isn't as important as a nuclear power plant going down because the guy in the control room was going for a big OC. :rofl:Quote:
Originally Posted by AndrewL1950
Your max temperature in RealTemp only shows 51C. That's the important number. If RealTemp maxed out at 67C then I wouldn't go any higher. If OCCT is showing you 67C then ignore it. At 51C you still have some more head room to give 'er some more voltage and some more MHz without burning down the house. :up:
Thanks for the info. That Realtemp was opened just after OCCT finished. I had another RealTemp running, which maxed out at 67C. So I will not push it any farther until I pick up a True 120. I am using the baby version of Noctua's flagship HSF, so I have a lot of room to work lol.Quote:
Originally Posted by unclewebb
I just wanted to make sure I OC'd it right. I see a lot of people talking about increasing NOrth Bridge temps, etc.., and I don't really understand that.
Anyway what does absolute max mean? Does it mean CPU can operate under this conditions if not going over max allowed temperatures?
And what's the max safe CPU VTT (CPU FSB) for 24/7 overclock?
Is it better to run memory Linked or Unlinked?If I run Unlinked at max clocks I get better memory bandwidth in Everest but in real life does CPU take advantage of that?
Anyone have any idea why, at idle, and at max load, my cores are 10C apart? Core1 being on the high end, Core 0 being on the low end?
today i got my Q807 E8500 For Rma and i got a new one Q806
it dose a bil lower Mhz from the old one but he can do more fsb stable :p stil 540Mhz wall on my board
after two hours of testing and priming i got this for 24/7
i sill lowering the Vcore to see how stable he can be
and some strange thing : if the core 0 has gtl lower than 73% he is not stable even @ 3017Mhz :/
when i find at what Vcore is stable for 500x8 i will post some ss
The Actual Vcore is 1.34 just as the sidebar measured with a multimeter, abit IP35 Pro has a huge Vdroop and i am just to boring to just it :D
http://img510.imageshack.us/img510/5...0001fz8.th.jpg
Mostly because these sensors are less than perfect. They were designed to accurately trigger thermal throttling at about 95C and thermal shut down at about 125C and I've yet to hear of one processor that couldn't do this job adequately. Each CPU is individually calibrated by Intel for that reason.Quote:
Originally Posted by AndrewL1950
Some of these sensors just aren't great at reporting low temperatures. You can read the RealTemp docs and try the calibration procedure. Your temps should look a little better but they won't be perfect.
For those that missed it, Intel plans to release the full specifications for the 45nm temperature sensors at next weeks IDF. This should make it far easier for all programmers, including myself, to better interpret the data coming from these sensors. I don't think there's anything they can say that is going to make these sensors perfect but maybe there is some additional temp info hiding in these chips that no one knows about.
http://www.anandtech.com/weblog/showpost.aspx?i=478
http://www.tomshardware.com/news/IDF...ture,6154.html
It's wise to not push past 67C. A True will be your new best friend!
Here's the latest beta of RealTemp with a more modern look:
http://www.fileden.com/files/2008/3/...alTempBeta.zip
I'm waiting for the E8400 & E8500 with E0 steppings, they may address the Wolfdale temp sensor issue, the other thing I'm noticing with my E8400 (C0)
is my Vcore is creeping upwards, I need more Vcore today to reach the same overclock than when it was new 6 months ago.
and thanks for the latest RealTemp !
i thing with the new stepping they fixed the degrade too :/
i'am trying mine Q801 ( E8500 ) with 1.55 @ 4.3Ghz he is ok for now :p
but i'am sure in one week i will need more than 1.6 for those Ghz
I'm not sure that a stepping change can fix it. It shouldn't degrade that quickly. Keep testing and let us know. This is very important information. Every Wolfdale seems to have an initial burn in period were it takes less volts to hit higher speeds for the first week. Then, you have to increase the volts. It seems to be a one time thing.Quote:
i thing with the new stepping they fixed the degrade too :/
i'am trying mine Q801 ( E8500 ) with 1.55 @ 4.3Ghz he is ok for now :p
but i'am sure in one week i will need more than 1.6 for those Ghz
Please correct me if I'm wrong.
Is anyone getting E0 steppings for the E8400/8500?
It clearly says in the Intel documentation that if you go beyond the Absolute Maximum core voltage which is 1.45 volts for 45nm, that your "reliability will be severely degraded."
Even in the gray area of 1.40 to 1.45 volts where many people here operate their 45nm processors 24/7, Intel still states that, "neither functionality nor long-term reliability can be expected.
If you want to push 1.55 volts or whatever through a 45nm CPU that's fine but if a month or 6 months from now you find that your processor has degraded, you shouldn't be too surprised by that. The only surprising thing would be if your processor didn't degrade. I don't think the new E0 stepping is going to significantly change the laws of physics that limit these CPUs.
2.6 Voltage and Current Specification
2.6.1 Absolute Maximum and Minimum Ratings
At conditions exceeding absolute maximum and minimum ratings, neither functionality nor long-term reliability can be expected. Moreover, if a device is subjected to these conditions for any length of time then, when returned to conditions within the functional operating condition limits, it will either not function, or its reliability will be severely degraded.
http://download.intel.com/design/pro...hts/318732.pdf
What they don't say in the documentation is the time frame they are talking about. It is my understanding that these chips are made to run for 10 - 20 years, maybe longer. For me, I just want a year or two. I'm curious just how fast they degrade. I know that this is a very complicated matter and that no two chips will be the same. Also, there is no formula that says 1.5v at 65degrees will kill a chip in x amount of days. I would like some ballpark figures though. We should start seeing some effects of high voltages within the next few months if this is actually the case. These chips have been out since November of 2007. We're going on ten months. I know some guys had to be running these at 1.5+volts this entire time. I just hope that they tested them properly.
Don't get me wrong, I'm not saying that I don't believe them. I just wish I knew the specifics. I guess that I would need a Ph.D for that.
I like
3.0.5 Package Insertion Specifications
The processor can be inserted into and removed from a LGA775 socket 15 times.
16 times, it will explode.
Thanks for the link. That's good stuff.
How does this work in terms of chips with different vid values? For instance my old e8400 had a vid of 1.25. If i ran it at 1.4, I was overvolting it by 0.15. My new e8400 has a vid of 1.15 so if i ran it at 1.4 i would be overvolting by 0.25. Do these intel reccomendations count for all 45nm chips regardless of default vid?Quote:
Originally Posted by unclewebb
my E8500 Q750A194
http://i240.photobucket.com/albums/f...9507-6-5-1.png
Mumid: My opinion would be that VID doesn't really matter. CPU VID tells a motherboard how much voltage a processor needs to run reliably at default MHz as well as how much voltage is needed to run reliably when C1E / SpeedStep are enabled. It doesn't really change the fact that these are all 45nm chips and the Intel Minimum and Maximum ratings apply to all 45nm CPUs.
I don't think there will ever be enough scientifically collected information to come up with a reliable model to predict the life span and how much these processors will degrade vs time. If you can't afford to run out tomorrow and buy a new one then I'd play it safe and wouldn't go over 1.40 volts. For most people, a tank of gas and a low end processor is about the same price these days so if a processor gets fried, it's no big deal. :D
Rickpatbrown: I think the documentation is very clear about time.
"...if a device is subjected to these conditions for any length of time..."
Obviously Intel needs to be a little conservative to keep the RMA numbers down but if you plan to keep your CPU for a couple of years then going by the Intel docs isn't such a bad idea.
i got a new e8500 q816a (which seems to be a good batch - for e8400). i get very high temps, even at default. its a decent overclocker, ie 4275 @ 1.32v bios, but the idle temps are around 55c. i checked my contact, and even swapped out my hs, but still same. if i was priming for 15 minutes or so @ 72c, the heatpipes on my xig should be hot to the touch? because they are not. i have had 3x 45nm chips like this now (not in a row), a q9450 and an e8600 and this. could they be making really bad contact with the ihs? this is with 3 out of around 10 cpus. vid as reported by realtemp 2.70 is 1.2250v.
Really high idle temperatures are usually a sign of sticking sensors. A good air cooler can dissipate a lot of heat quickly so it might not feel as hot as you think it should. Bad core to IHS contact is a possibility but if this was a problem I don't think it would be a good overclocker.
:rofl: οκ 4600Mhz with 1.8 now :p he is the worst chip i ever got and then he just died when he was priming on 4600Mhz so i show that the degrade cames on even lower voltages less than 1.4V and it is not for the first week only but for the whole life of the chip :DQuote:
Originally Posted by Rickpatbrown
Got my hands on these babies today :)
http://img175.imageshack.us/img175/5...0674ir5.th.jpg
http://img293.imageshack.us/img293/2...0676pj5.th.jpg
Quote:
Originally Posted by Gligy
nice to see mate...waiting results.