after a lot of reading ppl say under 1.4V is safe. So like 1.38 and lower is good. That is what I currently have but trying to get past 4.2Ghz without increasing the cpu vcore.Quote:
Originally Posted by Dom7184
you got any ideas lol?
Printable View
after a lot of reading ppl say under 1.4V is safe. So like 1.38 and lower is good. That is what I currently have but trying to get past 4.2Ghz without increasing the cpu vcore.Quote:
Originally Posted by Dom7184
you got any ideas lol?
is 1.296v at 4275Mhz any good ?
this is on a Asus P5B Dlx
yea that is awesome!!Quote:
Originally Posted by Dom7184
you are lucky u got a nice chip unlike me:(:(:(
well i made sure to find out what i was getting they still had a hand full left at http://www.centralcomputers.com/index.htm they got where you can IM them and they checked the sSpec Numbers to make sure it was a E0 and also gave me the Q822A537 Pack Date 8/7/07 there others are the same they have left its a lil more then newegg but they couldnt find out and i didnt wanna take that 50/50 chance ;)Quote:
Originally Posted by misho
That a pretty good patch and pack date.Quote:
Originally Posted by Dom7184
well it rebooted last night lol but just passed a intelburntest at 5 times at max but need to work on the mobo settings cuz highest in windows was 7.5x575fsb :D killed that 480 i max on the E6400 and X3350 i hadQuote:
Originally Posted by LagunaX
but might still get a P5Q Dlx or MAX II idk yet might wait for i7 to come out for and old P965 it still works P5B Dlx
also whats the 24/7 mac vcore you go by ? 1.38- ?
My 8500: SL9BK 827A288 Pack Date: 08/07/08
450x9 1.33750v 1.54 PLL
Yeah on air I go 1.37-1.38 max for 24/7 otherwise it gets too hot.Quote:
Originally Posted by Dom7184
its on water ran OCCT highest was 51c on both and idles at 32c 1.336 idle 1.344 load 4250Mhz just testing what i can get off these volts going to use setfsb to up it some everythime it passes OCCT 1hr test or well say 15x intelburntest be better and also fasterQuote:
Originally Posted by LagunaX
Would it be a bad idea to run 1.42 24/7 if my temp arent too bad?
My max Pi on air :D
http://img367.imageshack.us/img367/6615/sp4860fa9.png
how do you know since Tcase max is 74.1C? Are you using an IR thermometer, or thermocouple on the IHS?Quote:
Originally Posted by LagunaX
;)
So what do you guys think?? 4.2Ghz is my max on 1.38Volts on the CPU?
not bad on a C0 :clap:Quote:
Originally Posted by misho
idk but this old mobo like fsb with this CPU
fsb 1.20 bios
nb 1.365v real
I saw E8500 C0s hittin 4.4+ on same volts in previous pages.. E8400 C0s too.
not all cpus oc the same also might try working on your settings in the bios idk all the new crap they added cuz im on a Asus P5B Dlx P965 not much to mess with in the bios like the P35,P45 etc.Quote:
Originally Posted by misho
Dont look at others results, there can be many differences ;mobo, VID.Quote:
Originally Posted by misho
Great overclock already dom :up:
Well I'm a little pissed and happy about my parents new PC. It runs cool and overclocks well. Unfortunately their E8400 overclocks a lot better than mine.
vCore: 1.25V (BIOS)
http://img515.imageshack.us/img515/3987/4ghz125vif6.png
Mine (C0) needs ~1.4V in order to become stable at 4.0Ghz. :shakes:
good with 1.232v
Well,why don't you change the cpu,i'm sure that for them it's the same thing :D
thanks:)Quote:
Originally Posted by carepolice
but even if its the same VID it might not OC the same there not all the same and but its better then some ppl are getting for 24/7 clocks
I would do the same :p: hope he didnt tell them alreadyQuote:
Originally Posted by Alex-Ro
I'd swapsies.Quote:
Originally Posted by SimpleTECH
Why dont you just swap them as said ^
I belive that your parents doesnt do much whit high oc'd dual core chip :D
LOL! Funniest thing I've read today. Tell Leeghoofd to put your parent's e8400 on his list, LOL! :rofl::ROTF::rofl:Quote:
Originally Posted by SimpleTECH
Lol, you guys are too sweet. :rofl:
Yeah I told them and honestly they wouldn't care. To be honest, I want them to have a relatively 'cool' computer since it gets somewhat hot in their office and I need a chip that can sustain low voltages at higher frequencies.
That said, I will most likely just sell my E8400 in hoping that I can get a E0 someplace else. *crosses fingers*
Their PC specs:
Asus P5Q Pro
E8400 E0 (8x500, E0 stepping, 1.25V)
OCZ Vendetta 2 (using my custom bolt kit, does the job well)
2x1GB Patriot PC2-8500 (crappy overclockers but I had some spare sticks so I decided to use them.. ;))
WD 320GB HDD
Samsung 22X DVD writer
Corsair 620HX
BFG 8800GT OC (sounds funny but came from my build after I upgrade to an 8800GTX)
All inside a 1 1/2 year old Thermaltake Armor. :)
Currently burning in my new Q828A434 VID is 1.25, currently 1.19Vcore (1.250 set in bios LLC disabled) for 8 x 500FSB
http://users.telenet.be/OAP/E8500EO.JPG
will let her burn in some more and then wack her up to 4.5Ghz...
very nice leeghoofd, do you mind posting up your settings for that clock?
Hoooly s**t I needed 1.34V for mine to reach 4Ghz stable!!!!
damnit u guys are lucky to get E0s from the store... NO ONE here in canada sells E0s... And tankguys don't ship to canada :(
:DQuote:
Originally Posted by misho
There is something wrong now... Even in here finland you can go and buy E0 :rolleyes:
Quote:
Originally Posted by kaskuli
kaskuli, I have the brother to your E8500.:)
Mine is E8500 SLB9K Q827A286 Pack Date: 08/07/08
Still testing mine.
thx but I'm still looking for better, thx to Nilos for having me swap this one... other one was 1.25Vcore required for the same ops...Quote:
Originally Posted by gurusan
CPU Voltage: 1.25
CPU GTL Voltage Reference (0/2): 0.645
CPU GTL Voltage Reference (1/3): 0.645
CPU PLL Voltage: 1.56
FSB Termination Voltage: 1.2
DRAM Voltage: 1.94 (4gb Mushkin redline pc8000)
NB Voltage: 1.22
NB GTL Reference: 0.63
SBridge Voltage: AUTO
PCIE SATA Voltage: AUTO
well just passed 20x intelburntest @ 422X9.5
at 1.35 is safe enough for a 24/7 bench test 1.362 is the max keep and eye on your temps as you bench it..a good thing is try to get your system dust free and build up in the fins of your heatsink and if you got alot of case fans keep the blades dusted off also as much as possible to keep good air flow:up:Quote:
Originally Posted by Dom7184
Im on water ;)Quote:
Originally Posted by bigwill68
heres my new e8500http://i37.tinypic.com/s41fnp.jpg
How did you stumble upon those GTL settings mate and why are you using them?Quote:
Originally Posted by Leeghoofd
Trial and error mate, I set for 45nm 0.630 for both and test Vcore, then I try to set one notch Vcore lower and mess with GTL 's up and down... in my case core 1 always capped out, so I tried a bit higher and settled on 0.645... runs linpack test flawlessly and survived OCCT 2 hor CPU test too... stable enough for me... I'm no mathematician but I've read that most 45nm CPU's tend to like to be around 0.8...
Sounds good fella, will have to give them a try on my rig when I get chance :up:Quote:
Originally Posted by Leeghoofd
E8400 Q746A489 C0
P5B Deluxe Bios 1236
vCore 1.41
500 x 8.5
CPU WC peak @ 61c
2+ hours and pending :rolleyes:
http://i137.photobucket.com/albums/q...500x85141v.jpg
BooStFeD ;change your coretemps TJmax to 100c
Nice to see another P5B Dlx :DQuote:
Originally Posted by BooStFeD
wut fsb and NB volts are you using ? also heres links to Core Temp 0.99.3 and OCCT Perestroďka 2.0.1 there updated with the 100 tjmax
have you tryed lower Multi and higher fsb ? my max and stable is 580 and it helps the mem in read and write and i didnt have to up the volts that much on the fsb and NB but mines a E8500 E0 idk if the E0 would help the fsb more worth a try
@BooStFeD
Whats your oc speed on your and volts you got volts on 2.1v or 2.0v it's goota be running loose..
I can't tighten my memory up to 4-4-4-12 unless the memory alittle Oc'd about 413 a stick..right
now it's at 991 oc'd at 2.0v...
@Dom7184
Brother you got a monster there:yepp: looks great hey got a question. I'm planning another build in 09 a water build..I been seacrhing around to if there
is different type of water coolant colors available in different types really..I'm looking for a purple color so far all..i have seen is green,clear,blue and..i believe red just wondering have you seen different 1's any where else? bye the I got a clear case myself..but i only used it once it's back in the box where it was shipped it from newegg was'nt keeping things Cool for me:shakes:
http://www.newegg.com/Product/Produc...82E16811148001
http://img508.imageshack.us/img508/2...earcasetu8.jpg
+ shipping cost
E8400 E0Quote:
Originally Posted by BooStFeD
P5Q Deluxe Bios 1406
vCore 1.3360v (1.34375v on bios)
500x8.5
CPU on AIR peak @ 63şC
5+ hours done :D
http://img46.imageshack.us/img46/289...vbiosstdj8.png
25x Linpack done :p:
http://img46.imageshack.us/img46/725...vbiosstgv7.png
That's my 24/7 now.
Dom Thank you for the links ;)Quote:
Originally Posted by Dom7184
I have not tried higher fsb stability testing. Did post at 600*7 though. Bios NB settings is 1.45 and FSB is 1.30. Going to see if i can lower these more.
Just passed IntelBurnTest x5 will do x20 after some FarCry2.
http://i137.photobucket.com/albums/q.../E8400TEST.jpg
bigwill68 Just updated sig. Not using 2x1gb XMS2 anymore. Running 2x2gb Mushkin Ascent
http://www.dangerden.com/store/produ...&cat=63&page=1Quote:
Originally Posted by bigwill68
Hi!
let me share some pics.
4ghz 1.152v prime 1 hour: http://images.netbag.hu/20081028/21400352011.jpg
4ghz 1.136v burntest 5 pass: http://images.netbag.hu/20081028/21385172924.jpg
4.4ghz 1.32v occt 30 min: http://images.netbag.hu/20081028/21422790662.jpg
I hate my C0 4.2ghz needs 1.41 v core :(
4.1ghz isn't bad tho :)
Quote:
Originally Posted by Dom7184
Thanks brother good looking out:up:..saved to my favorites..Now I can order some and have it ready for the build:yepp:
I feel 1.41vcore is not bad. I would not go higher with these cpu's. Pumping 1.41-1.43 to my C0 E8400 for almost 8 months. Still alive and kicking thats for sure :DQuote:
Originally Posted by Quad-Damage
Just got rid of my E8500 (C0) for an E8400 (E0) and the difference is already apparent. Waiting on a Biostar Tpower I45 to be able to test further than where I'm at. The IP35-E beta BIOS that works with E0 CPUs borked the MCH code, so you can't adjust the voltage; hence I can't go farther than this FSB.
3.8GHz, default Vcore (1.25v in BIOS, which is VID; 1.20v after Vdroop) ...this took +.04v from VID with my E8500.
http://www.myalbumbank.com/albums/us...priming3-8.jpg
CPU info:
http://www.myalbumbank.com/albums/us...0/boxlabel.jpg
Will update once I can clock it like it should be clocked. ;)
Quote:
Originally Posted by subaruwrc
AMAZING! E8400 E0 at 1.31V for 4.4Ghz?!
My stupid E8500 C0 needs 1.37V for 4.2Ghz, and over 1.41V for 4.3Ghz
Damnit u guys are soooooo lucky to live in countries that cell E0s///!
I have an 8400 E0 that won't do more than 3950 no matter the volts or settings.
Be happy with what you got, very happy
I wont be happy cuz I deserve more!! I've been waiting for more than 2 months, going to store every week check when they have the new E0s, they never had it... I looked up stores to order from US, had problems paypal, etc etc.. and then at the end from ordering newegg NEW JERSEY warehouse where ppl got E0s, I get a :banana::banana::banana::banana:ty C0, made in June.. thrown on the ground by UPS in front of my door.. all this :banana::banana::banana::banana: for C0, when I could of bought C0 300000 years ago ...Quote:
Originally Posted by Melhisedek
Anyway I guess 4.2Ghz on 1.38 is OK for a C0.........
Edit: After a few months imma just JUICE this shiiet to like 1.5V see what it can handle.. I dont give a crud
My E0 E8400 does 4.4Ghz at 1.31v, but needs 1.39v for 4545MHz...lil too much for me! Currently running 4.0GHz at 1.2v.
Thanks dude.Quote:
Originally Posted by misho
Im really happy with this cpu but i want more :)
mine does the some but I only tried to 1.368v but it failed within a minute in prime...Quote:
Originally Posted by OCX600RR
at 4500mhz...
how much cpu vtt do u use az 4545mhz?
Beszivárgunk ide is lassan:cool:Quote:
Originally Posted by subaruwrc
úgy néz ki.Quote:
Originally Posted by laragirl83
how about E5200 anybody know if batch # 3827A341 any good ???
couldnt resist Fry's had em for 109 bucks with a pos ecs mobo:D
OC the :banana::banana::banana::banana: out of it.!!Quote:
Originally Posted by HDCHOPPER
What to do if my CPU is Small FFT stable for many many hours but fails Large FFT after 45 min? I've bumped up my vDDR, vNB, loosened timings, raised PL... quite frustrating :(
I did some searching and people say it's indicative of the memory being unstable, but I'm running my 4GB GSkill DDR2-1000 PQ slower than rated as well. Looking for general information and will post settings shortly.
you know it ! hahahaha just got my pot too:DQuote:
Originally Posted by misho
dice on it soon hot dam 12.5 multi here eye come :rofl:
IF that is a e8500 c0 u overclocking, tell me ur Vcore and all the other voltages PLZ thanks!Quote:
Originally Posted by zoob
mine from microcenter C0 stepping unfortunately bought at microcenter when they were considerably more expensive
will do 9x450 fsb 4.05 ghz at 1.256V on water
and 5.3 ghz at less than 1.6v on ss
5.5 at 1.6v maybe a touch more on ss
http://valid.x86-secret.com/show_oc.php?id=438653
will be making DICE runs soon
heres the box pack date/batch
http://i24.photobucket.com/albums/c2...3/IMG_7602.jpg
heres my 24/7.http://i34.tinypic.com/2iid1xe.jpg
Guys, help me out here please.
Is this ok for 24/7?
http://img517.imageshack.us/img517/9...vbiosstob1.png
I guess the vcore is fine, but what about the 533 fsb and other volts? Is it too high for 24/7? I like high fsbs :DQuote:
4250MHz (533x8)
vCore = 1.35000v
CPU GTLs = Auto
CPU PLL = 1.54 (or 1.56, don't remember)
FSB = 1.30v
DRAM = 2.10v (1:1) @ 5-5-5-15
NB = 1.28v
NB GTL = Auto
SB = 1.20
PCIe SATA = 1.60
CPU/NB Skew = Normal
All the rest: Auto
I'm either using this config or like radaja is using (500x8) but with a 533 fsb I can use my mems 1:1.
Purchased a E8400 OEM a few months back. Will run 24/7 at 4100 mgz but not 100% stable..... 100% stable at 4050 mgz 1.32 V
Great chip for the price.
Running on older 680i EVGA board with old Corsair Hydrocool.
:up::up::up:
That is perfectly fine. IMO, anything under 1.40V is considered 24/7 worthy. :)Quote:
Originally Posted by Viper.Br
Just make sure you keep account of your temperatures, that's all.
That is a typical/good result for an older C0 e8400 - 4.05ghz required 1.32-1.34v for my older C0's that I sold. You probably will need 1.35-1.37v for 4.1ghz stable which might not be worth the extra heat for the extra 0.05ghz.Quote:
Originally Posted by Badge56
OK Guys I have a question about FSB vs multiplier..
So What is faster?
500mhz x 8 = 4Ghz OR
444Mhz x 9 = 4Ghz ?
Is it the same performance with less multipliers ? or does it loose its performance even at the same CPU frequency?
Help ! thanks
the higher fsb with lower multi will net you better performance, as the memory is tied to the bus speed.... so as the bus speed increases the whole systm speed increasesQuote:
Originally Posted by misho
Punx223 is correct but motherboards, ram, and northbridges are funny - some will be stable at a 9x multi and not at an 8x, etc.
Take the highest stable overclock you can get - it will probably be with the higher multi.
If it is the same ghz, then of course take the lower multi/higher fsb.
REALLY? So it will be better for games (higher FPS)? and what about encoding etc?Quote:
Originally Posted by punx223
Edit: also what is the limit for my memory anyway? Its OCZ Reaper HPC 2x1GB DDR2 8500 .. Right now its running at 2.1V, 1770Mhz, fully stable and passes memtest. How much can I go with this memory?
Edit2: ALso mobo is BIOStar Tpower I45, so that can handle high FSB
Quote:
Originally Posted by misho
theres no way to say for sure what your ram will do.... only testing will tell...
not to mention you will wanna run memtest to make sure your not getting small failures....
even though your memory seems stable it may have small failures you wont see until deep into a good scene on your favorite mp game and she freezes, or BSOD on you
not to mention you dont wanna deal with the corruption if the memory is unstable:shocked:
like laguna said.... it all depends on teh board though.... you will have to figure out what your board likes...
also some boards like certain ram better than others
There is one setting you're forgetting about: tRD
You can have a nice high FSB with a low multi and get higher latency due to a high tRD (Performance Level) which can offset any gains from more bandwidth.
so very true.. without it tweaked right you will not gain from the extra bandwidth.... thank you zlojackQuote:
Originally Posted by zlojack
Yea so I will have to tweak and test the memory timings etc..Quote:
Originally Posted by punx223
Will do that tonight once I get home and unplug my harddrives..
Thanks SimpleTECH. Temps are ok. Now i'll try to find the higher clock with 1.40v set. I'm loving this chip :DQuote:
Originally Posted by SimpleTECH
Here's my E8400 E0, batch Q826A399, week 08/13/08.
http://i183.photobucket.com/albums/x...45GHz1312v.jpg
Folded all night at this speed. And here's a validation:
http://valid.x86-secret.com/show_oc.php?id=439932
Might try for a higher clock later today.
OMFG SEE LOOK AT THIS GUYS ! 1.312V at 4.5Ghz E8400!Quote:
Originally Posted by YMAA
:shocked::shocked::wiggle::wiggle::wiggle::wiggle: :wiggle::wiggle::wiggle::wiggle::wiggle: Why can't I have that :( :( :( :(: :(
I can post like this too but.. is it stable? :rolleyes:Quote:
Originally Posted by YMAA
Stable as a bird. It was running FAH all last night without a hiccup. The chip is getting pretty hot though. I may remount the waterblock later today, I might've shifted it while doing the tubing.
OK SO I tried 9x multipliers higher FSB voltage, higher pll voltage, 8.5x multi still very unstable at 4.3GHz, fails orthos in 2 seconds, games crash real bad...
I guess there is NO way to get this cpu stable above 4.2Ghz without increasing the CPU voltage from 1.38V to something higher...........................
I read some ppl had their CPU for over 8 months on 1.5V running fine.. what do you guys think?
cause your doing something wrong.Quote:
Originally Posted by misho
What are your system specs, misho?
I think once you hit 1.40 volts, you should call it a day for 24/7 use. The difference between 4300 MHz and 4200 MHz is 2.4%. There isn't an application in the world where you will ever notice the difference so why risk stability for such a tiny gain. For benching there's some fun to be had beyond 1.40 volts but for day to day use you don't gain a hell of a lot.
1.40v should be "loaded cpu vcore read by cpu-z or DMM"
nice clock with low voltage :clap: other settings?Quote:
Originally Posted by YMAA
I like your wallpaper :D
These are the settings I can remember for that speed. I'm testing 4.6GHz now.
All skews set to Normal
Pull-ins Disabled
All GTLref set to Auto
vNB - 1.2v
vFSB - 1.2v
vPLL - 1.5v
DRAM - 2.1v (still testing...getting used to the new Mushkins)
EDIT: I'll have to find out how to record BIOS settings directly from the BIOS, I think there's a way to do it.
CPU IS E8500 C0, batch q818a102, date 06/27/08Quote:
Originally Posted by YMAA
MOBO is BIOstar Tpower I45,
memory: OCZ REAPER HPC 2 x 1GB, DDR2 8500
Corsair HX 520watts
COOLING: Thermalright Ultra 120 Extreme paired with 2 x Scythe KAZE ultra 120mm 2000rpm.
Temps at 1.38V is 30 idle, 41C MAX
But look at yours, you can EASILY hit 4.7Ghz with something close to 1.38V, and that is crazy.. Soo lucky u got that cpu LOL :jealous:
Most C0's cannot compare to E0's for higher ghz at lower vcore - a 4.2ghz C0 is a rare gem that unfortunately is not worth as much nowadays...I have a e8400 C0 that takes 1.37v for 4.2ghz...
Try tweaking your GTLref. Start at .63 and work your way up. Some 45nm chips seem to like .63, others like .67. Usually if you're running Prime95 and one thread fails you can maintain that vCore and tweak your GTL.
i need to stablize my cpu at 1.45 v at bios :( to have 4.25ghz ....Quote:
Originally Posted by LagunaX
poor me c0 e84
thats mean i can change the cpu gtl voltage and lower my vcore then check if it is stable or not ?Quote:
Originally Posted by YMAA
K guys I changed GTL voltage, pll etc, memory too but nothing
still VERY unstable
You have to tweak to find it. EVERY CPU likes a different value. Generally what you do is start with a common value, like .63 or .67, then experiment to find what your CPU likes. GTL takes a LONG time to figure out. It helps to change one thing at a time, it may take longer but makes it much easier to isolate problems (things you need to change).
Are you sure it isn't your RAM? Take your RAM well below stock speeds, run at stock voltage, and do a Prime95 small FFTs test to stress just the CPU. Once you've found a speed your CPU likes, clock the RAM back up and see what it likes in terms of clock speed, timings, and voltages.
update today =) all this is on Air with tuniq tower 120
http://valid.x86-secret.com/show_oc.php?id=440390
5130mhz done * even try 5161mhz but when i save at my hdd was it corrupt :(
:D tested benched at 5026mhz with 1,76v and superpi 1M gave me 9,3 sec with timings 4-4-4-4@vmem 2,2v
this usually means nothing as it is not the actual volts the cpu is getting. ;)Quote:
Originally Posted by hktony
hi, what is the maximum CPU speed that you can pass 1 hour prime/orhtos with? ~4800mhz?:p:Quote:
Originally Posted by PytonOrm
:D update again
http://valid.x86-secret.com/show_oc.php?id=440530
5192MHZ done *
what is Wr on E8500 and E0 on air ?