im selling my hella overclocking E8400 just pm for more info...does 4.45ghz at 1.344 volts..and i know it has room for more overclocking in the right hands and boardhttp://www.xtremesystems.org/forums/...1&d=1227678191
Printable View
im selling my hella overclocking E8400 just pm for more info...does 4.45ghz at 1.344 volts..and i know it has room for more overclocking in the right hands and boardhttp://www.xtremesystems.org/forums/...1&d=1227678191
Hey guys, been awhile since I posted on this thread, back in April it was. I had an E8400 C0 revision that ran several months @ 450 x 9 while only requiring 1.30v loaded cpuz vcore. Well, i got bored with my overclock recently (of course), and decided to start pushing the fsb upwards for many reasons, including memory bandwidth. Anyhow, I was linpacking with the chip at 500 x 8.5 (4250) and my temps were getting into the mid to high 70's, while I don't promote those temperatures, I figured for a very short period of time wouldn't hurt (~10-15 minutes while linpack was running, as no other program including orthos/prime could get this cpu that hot.) It seemed i found a new stable clock @ 500x8.5, but within a couple more days of some short benching, i found my chip to be unstable not only at the new clock settings, but also the original 450 x 9 i had been running for MONTHS, so I reverted back to stock settings, and could not find it stable there either. My rig would boot everytime, however would freeze during benching, even at stock speeds, I tried the cpu in a spare gigabyte ds3l board i have but to no avail. I just want to let you all know that my cpu was not killed by voltage, as I had NEVER since i purchased this chip in march of '08 did i ever run more than 1.38vcore thru it for more than a few minutes, and my 24/7 setting was 4ghz @ 1.30v loaded vcore. I believe this cpu to have been degraded by temperature, not voltage. I picked up a new 8400 wolfie e0 revision, let me know what you think :D
Quick question guys....when your computer reboots when you are trying to get more MHZ from your cpu...do you automatically assume it needs more juice or is the any other bios option that could help?
Thanks
nice to know resyn ! thats where my auto shutdown limit is set , had a feeling about penryn and temps all along and keep mine at or below 45*c since day 1 :up:
and no shaolin never assume could be many different things such as vtt or pll let alone ram settings ... good luck
Really nice clocks, that's a great chip. What's the batch number?Quote:
Originally Posted by resyn
These E0 8400s are especially good. With the x9 multi my E8500 needs a lot more voltage than your chip. Awesome chip. :up:
My e8400 E0 is going well. Definitely good bang for buck.
Linpack 10 trials @ 4.23GHz
http://i266.photobucket.com/albums/i...z564MHzPL8.jpg
Orthos 4096K 3 hours passed:
http://i266.photobucket.com/albums/i...8moderatev.jpg
My last E8400 C0 was batch Q750 (450 x 9 @ 1.30v loaded cpuz) - and i considered myself fortunate with that chip, specially being that it was a c0.
This new E0 is batch Q837, pack date 12/04/08. :up:
Yeah, 1.3v from a C0 is actually pretty good. My C0 didn't even do 4GHz at 1.4v, but fortunately I sold it. :DQuote:
Originally Posted by resyn
My E0 isn't as good voltage-wise as some of the E0s on this board, but it's incredible in terms of load temps. At 4.3GHz (1.312v) my load temps are 39C. Your chip is not exactly hot at 56C, but what cooling are you using? I've never seen even 50C from my chip yet, even at 4.4GHz 1.352v.
Thats nuts, 39c loaded @ 4.3ghz, incredible.
As far as my cooling, i'm using a TEC cooler (peltier)
resyn
Nice chip mate ;) I have the same one :up:
I'm using my Zalman 9700. I used it for my Q6600 also but these E0 chips just take the biscuit. These low load temps are actually hilarious, even more so seeing that my chip idles at 33/39C. :yepp:
Quote:
Originally Posted by resyn
What Vtt (vFSB) are you guys using for 4500 MHz?Quote:
Originally Posted by WaterFlex
That is a really cool chip. Mine runs at 58*C in intel burn test and around 50*C in Orthos, cooled by TRUE.Quote:
Originally Posted by LennyRhys
Looks like I've also found 530 x 8.5 (4505) to be stable as well, at all the same voltages.
VTT @ 1.23
MCH @ 1.44
Nice work, thats a killer chip. That's on par with the best e8600's, I saw some Q822A435's doing 4500 @ 1.32v.
[QUOTE=CryptiK;3591620]What Vtt (vFSB) are you guys using for 4500 MHz?
I`m using:
vNB=1,312 (1,3 actual)
vFSB=1,312 (1,3 actual)
PLL=1,500
Full stable. Linpack stable too.
Did you find it needed the 1.3 Vtt was it not stable with less than that?
I have the strange behaviour of my MIIF. It needs Vtt=vNB. I am stable at Vtt=vNB=1,28V too but I like to have it in round numbers. So, 1,30 is nice :DQuote:
Originally Posted by CryptiK
http://img292.imageshack.us/img292/3...0p95hm4.th.jpg
NB: 1.3V
VTT: 1.1
GTL: 61x
NB GTL: 58x
Vdimm: 2.05V
I'm looking to getting an e8500 from newegg, so has anyone recently bough one from there? What's the current batch and how well can it OC?
@resyn
Great Oc on a P35 board there my friend...
I guess it doe's depend on the luck of the
draw when it comes to the Batch#'s
on these Cpu's:yepp:
@shoehorned
What is the rest of your setup you gonna use
for your Rig mb,memory,cooler,psu,etc?
Generally speaking, all E0s overclock well (I have yet to see one that doesn't) so as long as you get the E0 stepping it shouldn't matter what batch # it is. I specifically forked out the extra £/$ to get a guaranteed E0 and I'm glad I did. :yepp:Quote:
Originally Posted by shoehorned
4.5Ghz 1 Hr OCCT stable on air. CPU heatsink/fan is in sig.
This is on an E8400 EO batch # Q832A161.
CPU PLL 1.60
FSB term v 1.30
Dram v 2.15
NB v 1.55
Clock Overcharge 1.00
CPU Gtl .61x
NB Gtl .61x
CPU Clock Skew 1200ps Delay
NB Clock Skew 1000ps Delay
Vcore is set to 1.4125 in BIOS, you can see the load Vcore in screenshot
Highest temp during run was 70c for a few seconds here and there. Average temp was probably 65-66c.
I'm calling this 24/7 usable. Anyone think that's a bad idea?
lochabar
Great job. But I think vNB is high. Try to clock 500x9 and decrease vNB to 1,3.
Yes vNB is high. For 530mhz sync, i need 1.34v on my Maximus II Formula.
To call it stable. Run a good Prime run (small FFTs and blend).
Hi guys!
Based on my bios settings....what do you think I should try to get more out of this?
E8500 E0 Q827A353
http://img171.imageshack.us/img171/1737/imgp5725ri7.jpg
By shaolin95
http://img171.imageshack.us/img171/9946/imgp5727rp1.jpg
By shaolin95
It would seem that I need a lot more voltage to move up from here.
The memory at those timings and FSB and beyond that (520).
I did try relaxing the memory and didnt help either.
It seems that I m stock at 4.2ghz.
With a Scythe Ninja first gen I am afraid of giving it too much juice. According to cpu-z under load the vcore drops to 1.336
Thanks for any recommendation.
PS Do you think I should ask here or in my mobo's specific thread?
Sorry to burst your bubble but 39'C under load with your 9700 is a no way... :rolleyes:Quote:
Originally Posted by LennyRhys
Unless u have <10'C room temp (living in an igloo) or u're not loading correctly your cpu.
An igloo at 9°C? I'd love to see that...Quote:
Originally Posted by JoeBar
E8500 E0 @ 4.4GHz 550*8 at 1.392v :(
That's because of the low multi. With the 9.5 multi it could probably do 4.4GHz on closer to 1.3v. Taking the multi down even just half a step to 9, I need a lot more vcore. Why is your FSB so high lol?Quote:
Originally Posted by Dom7184
Alright, this is one hour OCCT stable also. All settings are the same as the 8.5x/530FSB run, with the exception of the v NB being 1.40 instead of 1.55. Turns out this made the CPU temps lower during load. Max was 66c and average was probably 60c. I kind of butchered the screen shot resizing it, lol.Quote:
Originally Posted by WaterFlex
One weird thing, all of a sudden, memset isn't reading my timings right. I have everything set via the EPP 500 spd you can see in the screen shot. There is no saved timings profile, so memset isn't loading these settings at startup, no idea why it is reading this. EDIT: the tRFC reading of 55 IS correct.
I ran some quick Sandra RAM bandwidth benches at both settings and the numbers are within 400 points with the 530 FSB run being the higher of the two, so am now debating which way to go for 24/7. The age old tighter timings/lower performance level, Vs. higher frequency slightly better bandwidth question. I might even be able to get 8.5x530 with the 1.40 v NB, haven't tried yet.
If this screenie is unreadable, I'll do another run and retake it. Let me know.
Nice speed lochabar, what is your batch number? If you want to know which of the 2 settings is faster, do a superpi 32M run at each setting. The higher FSB setting may win out, but if its only a little better and it requires more voltage/heat etc, maybe the slightly lower setting would be better for 24/7. It's unlikely you would notice a small difference in your day to day use of the pc.
You may be better off running say 4.4GHz & DDR2-1174 CL5 if your ram can handle it at a safe voltage.
Batch # is Q832A161. The highest I've gotten this RAM is 1152 and it didn't want to stay there for more than a few hours without errors. I had to dig through some older screen shots to find that and to be honest, I'd forgotten I'd ever gotten it that high. That was while running the CPU at around 4.0 Ghz though. That makes me curious to try a run at the higher RAM frequency with the CPU clocked up at the same time...Quote:
Originally Posted by CryptiK
U're getting there... ;)Quote:
Originally Posted by LennyRhys
naw its the same with this mobo its a p965 chipset and the more fsb the better the bandwithQuote:
Originally Posted by LennyRhys
i own E8400 CO, TRUE120 and DFI P45-T2RS Plus.
i got 475FSBX9 stable with max temp of 62C.
http://img232.imageshack.us/img232/6...zstablecb8.png
i cant get higher then that.. any tips for bios setting?
Well, this RAM is rated at 2.1v max. I've been running it at 2.15 just fine, but 2.20v makes it feel way too hot. Without the extra V, 1062Mhz seems like the best Frequency/timing spot while keeping the vNB at 1.40. RAM bandwidth test in Sandra scores right at 9800 with these settings.Quote:
Originally Posted by lochabar
So, my sweet spot looks to be 8.5x/530 FSB for 4.5Ghz CPU and 1062Mhz RAM. So far anyway...
I am running my e8400 @ 4ghz with 1.225v set in bios and 4gb ocz memory @1069 on p5k premium with transaction boost 3. Working just great, passed 15 linx runs
I've been playing with an OEM E8500 C0 pulled from a Dell. Got it stable at 4.2 on 1.35v CPUZ. 4.5 for some superPi runs under 1.4v. Back on my Q9550 now.
now i am running C0 E8400 @ 466X9 1.42V set in Bios , 1.36V real , load temps priming around 68 , is it ok to leave it 24/7 on this , my ideal temps are not good either , it is around 50c rest of specs in sig
I was able to lower my vcore to 1.240v @ 4.23GHz. The LCD poster reports the load vcore as 1.237v although cpuz reports 1.240v, I'm not sure which is correct. Although I doubt it, I may be able to lower vcore further I will test it later.
10 trials of Linpack after 1 trial, you can see the load voltage
http://i266.photobucket.com/albums/i...GHz1240vDD.jpg
10 trials of Linpack finished, you can see the idle vcore, Vtt, vNB & vdimm
http://i266.photobucket.com/albums/i...3GHz1240vD.jpg
4.3 GHz @ 1.280v (cpuz) 1.270v (LCD Poster) load and 1.320v idle - Linpack Stable
LOAD
http://i266.photobucket.com/albums/i...Hz1280vDDR.jpg
IDLE
http://i266.photobucket.com/albums/i...GHz1280vDD.jpg
Cryptik what's your CPU temp like with such low voltage? Awesome chip btw :up:
Thanks. Load temps at 4.23GHz @ 1.240v are around 55*C and at 4.3GHz @ 1.280v are around 58*C. That is with ambient temp of ~22*C, in 30*C ambients you can add 10*C to each temperature.
That's with a lapped TRUE and a 54 cfm fan.
Good Deal Bro:yepp:that's great would like to see sandra stress test mip's what your reaching under that Oc :yepp:in that Antec 300 are you running the top and rear factory fans with the speed switch that came with the case or different 1's?Quote:
Originally Posted by CryptiK
guys are all 8400's currently at newegg E0's?
If not is there any etailers selling E0's?
thanks
I tried for 4.5GHz again by my E8500 just isn't having it. I went as high as 1.44v in BIOS, already a bit too high for comfort, and it lasted for only a few minutes. I'm settling for the same bus speed but with a 9 multi instead of 9.5, so CPU vcore is down to 1.328 under load, and nice temps of 41C after 2 hours of prime. :up:
I have been running this build since 9/15/08 at the same settings below without any problems.
http://i44.photobucket.com/albums/f1.../OCCT500x8.jpg
http://i44.photobucket.com/albums/f1...TTempGraph.jpg
http://i44.photobucket.com/albums/f1...x8voltages.jpg
Ok the last two days here its been 46 degree's (so 115F), and 40 the day before and it would have to be 30 inside my place as its not heated up lol
(no aircon in the pc room hehe)
My OC as per sig did crash, so had to back it off a bit.
I could probably get the same in a tad lower vcore so i might play around when the weather becomes more reasonable.
But for normal room temps of 22-24 its A-Ok which is good. Im idle CPU @ around 44 degree so its fair warm when its usually 36 or something.
So something to work on! It might have been the ram also, will have to check it out as i can probably back some vdimm off there too :)
I haven't used sandra since about 2006, it's too synthetic IMO. I run the std 140mm top fan and a 120mm LED tricool as the rear fan and a 120mm tricool that came with the case as the front intake, all fans on lowest setting.Quote:
Originally Posted by bigwill68
Just recieved an E8400 from NewEgg.
Batch # Q837A218 SLB9J
Anyone have info regarding this batch? I'm trying to figure out if i should swap it for my current E8400 C0 Batch Q746A489.
These are results from my current E8400.
http://i137.photobucket.com/albums/q.../E8400TEST.jpg
4700Mhz at 1.45v Superpi32 and gaming stable without any crash yet.
1.45 is safe for lets say 1 year ?
Dont dare to try anything harder it might ruin my smile =)
38 Idle and 60 load temp with Scythe Mugen 2
Batch E8400 Q839A293 SLB9J
Still dont know a crap about timings on DDR2 and D9 but its running at 4-4-4-14 523mhz.
DS3 v3.3 Im still learning this Intel stuff.
Voltmodded For vdroop just cause i was bored, dunno about result.
A couple of guys have 4.5GHz stable at 1.33 - 1.34v with Q837's. I'd give it a go it should almost certainly be better than your C0.Quote:
Originally Posted by BooStFeD
Well, I hit 4400, but it requires about .1v more than 4200 and hits almost 13c higher too. What do you think guys, is <70 good enough or too risky for these chips?
In HWmonitor:
Remote 1 ~ Northbridge
Remote 2 ~ Southbridge
Room temp ~ 25C
http://img.photobucket.com/albums/v2...e8400/4400.jpg
i just got an E8400 (Batch# Q837A218) from Newegg and will be testing it in my sig rig this week - i have a C0 in there now that i'm putting in a different box. i'll report back with speeds and volts when i have all that.
Recieved my E8400 from Newegg aswell.Quote:
Originally Posted by xMrBunglex
Batch # Q837A218 SLB9J
Doing some quick testing this E0 seems to be a nice upgrade from my C0.
Reached 495x9 :yepp: going to lower vCore and continue stability testing.
Sorry about this terrible screenshot.... I screwed it up in paint :(
http://i137.photobucket.com/albums/q...8/Untitled.jpg
how about this one I got?
http://i39.tinypic.com/19rvxs.jpg
E8400 500x9
Default vid is 1.2375v
wc
still, without any errors, sometimes the pc simply restarts during IBT... It doesn't seem to be the cpu. IBT would simply show unstable results before the crash and it doesn't...
i think it's awesome for C0! :clap: What settings you are using in BIOS?Quote:
Originally Posted by Jodiuh
try to test with Orthos Blend, i think it will show mistakes.Quote:
Originally Posted by |Oc|REvO_HsArC
Well since the other week with the heatwave here and my BSOD...
I cant get my E8400 to 4320mhz/480FSB/1.280vcore
Im currently on 4185mhz/465FSB/1.296vcore, and thats about it. I CBF'd at the moment edging it up, to find the total limit
So it seems now i cant clock the CPU back to the original setting that was stable in cooler weather (and its cooler again now) :(
Every time i run Prime is fails one of the CPU workers in less than 5mins.
Any idea what would be causing it?
Ram or CPU im guessing... fk this is annoying as it was stable perfectly and passed hours on hours of every test under the sun.
Ok more playing.. E8400 to 4320mhz/480FSB/1.298vcore... failed prime again! Always the same worker, CPU #0
I moved the ram timings out to 5-7-7-18 and upped the volts to 2.16
(they are rated at 533mhz, 5-5-5-15 @ 2.1v)
So i might try 6-7-7-18 later on when i get home
Any ideas peoples?
I've always had a suspicion my ram wasnt totally happy as i set it to what the EPP says in CPU-Z and it never posted.
Maybe they are angry at me hehe
Break it down to testing the ram and cpu separately.Quote:
Originally Posted by R31Nismoid
Test with memtest and see if it the ram. Let it go to 1000% if you can. I've had errors show up at 500-600% and prime was failing after long periods.
http://hcidesign.com/memtest/
IBT stable at 4.275Ghz. 475X9FSB 1.38Vcore.
I set the Vcore higher just for peace of mind. I will have better results when I finally get that new RAM in, and can get this board under water. Still in the process of building it. You should see my other toy ;) Will post pics when I can find my camera.
http://valid.canardpc.com/show_oc.php?id=501725
Ye ive got memtest86 on a boot CD, the ram passed in stock form./Quote:
Originally Posted by gergregg
Will have a crack @ that one overnight and see :)
I've seen a big difference between memtest86 and the windows version. I could memtest86 up to 580mhz and show no errors. In windows I could only muster 565 or so.Quote:
Originally Posted by R31Nismoid
Good luck! :up:
At my local MC store, I saw a few batches: Q828A and Q829A (both with a Pack Date: 09/18/08) and Q842A (Pack Date: 01/14/09). Anybody knows if these OC good or not? I used to own two when it first launched, sold them soon afterward in anticipation of the i7. I've been running on budget CPUs for awhile along with my i7 (since launch). I sold my two budget CPUs and now I need to get an E8400. It will go on my P5B Deluxe (non-WIFI). Anyone with info please post here. TIA...
Damn. I just changed back to 4Ghz. The only difference's would be the obvious increase in Vcore (to 1.344 in windows w/ orthos loaded), a single notch drop in VTT, and of course the bus speed. Aside from that, here ya go:Quote:
Originally Posted by lexus232
http://img.photobucket.com/albums/v2...0/IMG_2786.jpg
http://img.photobucket.com/albums/v2...0/IMG_2787.jpg
It's much friendlier on my room temp wo/ that E8400 pumping out the heat 2 4.4Ghz. IMO, the risks and heat output simply aren't worth the extra 400Ghz.
My Phase Unit just arrived :D along with it a E8500 :D
Heres my first quick test.
http://i292.photobucket.com/albums/m...0FirstTest.jpg
I'v never used a dual or 45nm before so i'm still learning a bit. I know the E8500 is a C0, but i got it really cheap off the builder.
You need increase Vcore by 2-3 notches. I had the same problem when I made my chip to work at 4500 at 1,3 Vcore.Quote:
Originally Posted by |Oc|REvO_HsArC
1,34 is totally stable for me.
Nice chip btw :up:
You are right, that was the problem. :)Quote:
Originally Posted by WaterFlex
I got it fixed last friday by bumping the Vcore up to 1.30v.
Although it really didn't seem to be the Vcore, as my last 8400 would show errors before crashing.
SLB9J's sure are strange.
Up to 4500mhz this chip doesn't show signs of instability on OCCT or IBT if the vcore is not enough. It simply restarts in the middle of the test.
But above 4600mhz the behaviour is different. It shows errors instead of restarting.
My stepping is Q839A270.
I also tried two Q837's but they aren't very good.
ATM i'm testing how low my Vcore can go at stock on my E8500. So far its down to 1.104v.
http://i292.photobucket.com/albums/m...owestVcore.jpg
Anyone know whats the lowest ever for a E8500 C0 at stock?
I would try the lowest in the bios and see whats the highest oc you could get most cpus can run stock on the lowest voltsQuote:
Originally Posted by fatguy1992
testing 4.5GHz 500X9 at 1.448v :down: idk if its not that good ocer or need to get a new mobo p5b deluxe is kind of old
I just picked up an E8500 Batch #Q828A61A running that on an Asus P5Q deluxe and 2x2 gig corsair dominators. Just got the cpu up to 550 fsb with a low multi of 6 and 6.5 just to see if its capable. The only problem I'm havin is the ram keeps crappin out. I have the cpu at 1.325v and had the NB 1.42V with no success, any suggestions would be appreciated.
ps: all other settings left on auto, boots into windows sometimes and when it does fails blend.
might need more NB volts and whats the mem volts at ?Quote:
Originally Posted by vrdublu
The lowest is my BIOS is 0.5v :eek:Quote:
Originally Posted by Dom7184
Well I tried it up to nb 1.52v with no success, the ram was set at 2.10 which I believe translates into 2.20v real. This ram does does 1100 at 2.1, this I am sure of, is it because it's a 4 gig kit the NB has trouble with it at higher fsb? any other ideas ?Quote:
Originally Posted by Dom7184
Auto overvolts on this board so try (my settings at 566):Quote:
Originally Posted by vrdublu
CPU PLL Voltage: --> set 1.56-1.60 (1.60)
FSB Termination Voltage: --> set 1.22-1.26 (1.22)
DRAM Voltage: what your ram needs for the speed you are running
NB Voltage: AUTO --> set 1.26-1.4 (1.32)
NB GTL Reference: AUTO
SBridge Voltage: AUTO
PCIE SATA Voltage: AUTO
Thanks very much, I will try this out and come back with some results, very psyched about tbhis cpu, it's an E0 stepping and easily booted at 550fsb with 1.3125Quote:
Originally Posted by gergregg
Heres my top overclock, still lots of room to go higher
http://www.youtube.com/watch?v=pbmJtRkSlak
Look at the temps at the end
Push that CPU Fatguy1992... C'mon 5Ghz at least... do you really need +1.5 for just 4.7Ghz under that cooling ?
I'm trying to start my pc atm, my ud3p is being a b****. Not sure if I need 1.5v, i just set it and it worked :D
Once I manage to get it to start up i'll do some more testing.
im fixing to get a modded Mach GT II for like $5XX range is that a good price ?
just did my income tax lolQuote:
had a desuperheater coil added which gives the condenser more capacity and I also had it refilled and tuned with R507 refrigerant. Its tuned for very heavy loads now with my E8600 @ 5300Mhz 1.75v it will idle around -50c and run about -44c under full load.
whats a good DDR2 Motherboard ive been looking at the Asus Maximus II Formula & P5Q Deluxe for sometime and im going to get a new mobo but the GIGABYTE also look good but idk what to get im looking to get high FSB on Q's also
I tried these settings as you recommended with little success unfortunately. Can't even boot with less then 1.45 or so at 550fsb, this really abffles my mind, since so many report doing this at around 1.32 or so. I jacked it up to nb 1.52v and still seems aunstable. Any other ideas ??? I'm running bios 1702 if that makes any difference.Quote:
Originally Posted by gergregg
Please fill out this template and we'll see what we can try.Quote:
Originally Posted by vrdublu
AI Overclock tuner: Manual
CPU Ratio Setting:
FSB Strap to North Bridge: AUTO
FSB Frequency:
PCI-E Frequency:
DRAM Frequency:
DRAM CLK Skew on Channel A1: AUTO
DRAM CLK Skew on Channel A2: AUTO
DRAM CLK Skew on Channel B1: AUTO
DRAM CLK Skew on Channel B2: AUTO
DRAM Timing Control: Manual
1st Information :
CAS# Latency:
DRAM RAS# to CAS# Delay:
DRAM RAS# Precharge:
DRAM RAS# Activate to Precharge:
RAS# to RAS# Delay : AUTO
Row Refresh Cycle Time: AUTO
Write Recovery Time: AUTO
Read to Precharge Time: AUTO
2nd Information :
READ to WRITE Delay (S/D): AUTO
Write to Read Delay (S): AUTO
WRITE to READ Delay (D): AUTO
READ to READ Delay (S): AUTO
READ to READ Delay (D): AUTO
WRITE to WRITE Delay (S): AUTO
WRITE to WRITE Delay (D): AUTO
3rd Information :
WRITE to PRE Delay: AUTO
READ to PRE Delay: AUTO
PRE to PRE Delay: AUTO
ALL PRE to ACT Delay: AUTO
ALL PRE to REF Delay: AUTO
DRAM Static Read Control: AUTO
DRAM Read Training: AUTO
MEM. OC Charger: AUTO
AI Clock Twister: AUTO
AI Transaction Booster: Manual
Common Performance Level []
Pull-In of CHA PH1: DISABLED
Pull-In of CHA PH2: DISABLED
Pull-In of CHA PH3: DISABLED
Pull-In of CHA PH4: DISABLED
Pull-In of CHB PH1: DISABLED
Pull-In of CHB PH2: DISABLED
Pull-In of CHB PH3: DISABLED
Pull-In of CHB PH4: DISABLED
CPU Voltage:
CPU GTL Voltage Reference (0/2): AUTO
CPU GTL Voltage Reference (1/3): AUTO
CPU PLL Voltage:
FSB Termination Voltage:
DRAM Voltage:
NB Voltage:
NB GTL Reference: AUTO
SBridge Voltage:
PCIE SATA Voltage:
Load Line Calibration:
CPU Spread Spectrum:
PCIE Spread Spectrum:
CPU Clock Skew : Auto
NB Clock Skew : Auto
CPU Margin Enhancement: Performance Level
Quote:
Originally Posted by R31Nismoid
Don't keep torturing these chips. Listen to Lee. He keeps telling you guys not to keep torturing these chips like this. Run IBT a couple of times, then just run Orthos Blend/Memtest, and just *use* the computer and enjoy it.
Running these stress tests (that stress the CPU far more than anything else) repeatedly, especially IBT and sometimes prime small fft on hours/days on end, is not really healthy for these chips when they're pushed too hard. Your chip might be degrading from it. Seen it happen plenty enough. One guy degraded from 3.6 to 3.4 ghz (needed higher vcore--1.34 vs 1.32v) for 3.6 after a few weeks of repeated IBT's. And 1.32v isn't even that high.
Yes it's possible for chips to degrade even at lower voltages.
All chips respond differently, so what may happen to 1 person might not happen to someone else. Board timings/settings may play a part too.
There have been cases where it was the northbridge going south, or RAM, but memtest would pick that up (you'd probably need something a bit tougher on the NB to pick up problems there, like Orthos/prime Blend).
Ok here are my settings as seen in the bios. I can't even boot up without less then 1.42 NB and can't get into windows with less then 1.52, I got as close as the windows logo and scroll thing at the begining at 1.5 but then it crashed.
AI Overclock tuner: Manual
CPU Ratio Setting: 6
FSB Strap to North Bridge: 400
FSB Frequency: 550
PCI-E Frequency: 100
DRAM Frequency: 1100
DRAM CLK Skew on Channel A1: AUTO
DRAM CLK Skew on Channel A2: AUTO
DRAM CLK Skew on Channel B1: AUTO
DRAM CLK Skew on Channel B2: AUTO
DRAM Timing Control: Manual
1st Information :
CAS# Latency: 5
DRAM RAS# to CAS# Delay:5
DRAM RAS# Precharge: 5
DRAM RAS# Activate to Precharge:15
RAS# to RAS# Delay : AUTO
Row Refresh Cycle Time: AUTO
Write Recovery Time: AUTO
Read to Precharge Time: AUTO
2nd Information :
READ to WRITE Delay (S/D): AUTO
Write to Read Delay (S): AUTO
WRITE to READ Delay (D): AUTO
READ to READ Delay (S): AUTO
READ to READ Delay (D): AUTO
WRITE to WRITE Delay (S): AUTO
WRITE to WRITE Delay (D): AUTO
3rd Information :
WRITE to PRE Delay: AUTO
READ to PRE Delay: AUTO
PRE to PRE Delay: AUTO
ALL PRE to ACT Delay: AUTO
ALL PRE to REF Delay: AUTO
DRAM Static Read Control: AUTO
DRAM Read Training: AUTO
MEM. OC Charger: AUTO
AI Clock Twister: AUTO
AI Transaction Booster: AUTO
4th Information :
CPU Voltage: 1.325
CPU GTL Voltage Reference (0/2): AUTO\also tried .630
CPU GTL Voltage Reference (1/3): AUTO\also tried .670
CPU PLL Voltage: 1.54 works best so far\also tried 1.56 and 1.58
FSB Termination Voltage: 1.26 don't really know what this does, seems to work best on auto.
DRAM Voltage: 2.10
NB Voltage: 1.52 boots me into windows then crashes, memory error. Will boot with less but not into windows.
NB GTL Reference: AUTO\also tried .630
SBridge Voltage: auto
PCIE SATA Voltage: auto
Load Line Calibration: disabled
CPU Spread Spectrum: disabled
PCIE Spread Spectrum: disabled
CPU Clock Skew : Auto
NB Clock Skew : Auto
CPU Margin Enhancement: Performance Level
See if those will make a difference.Quote:
Originally Posted by vrdublu
Ok I tried those settings as well and still nothing, getting errors using Vistas mem check. I did try something else though and found interesting results. I went back to my old settings I used with an E6320 which I had hummin along @ 3.22 Ghz till recently, I used exactly the same MB settings and just changed the Cpu Voltage and NB V which btw is now at 1.26 at 458 fsb, so there's something else causing me to fail at 550?? I don't know if this helps, my MB Rev is 1.03G and bios currently used is 1702, I can't remeber if it's the modded one any more. I would really like to get the higher fsb, but these settings seem to be working ok right now. If anyone has any more suggestions on how I can get a higher fsb I would greatly appreciate it, my ram can't do much more then 1100 mhz though.
AI Overclock tuner: Manual
CPU Ratio Setting: 9.5
FSB Strap to North Bridge: 400
FSB Frequency: 458
PCI-E Frequency: 100
DRAM Frequency: 1100
DRAM CLK Skew on Channel A1: AUTO
DRAM CLK Skew on Channel A2: AUTO
DRAM CLK Skew on Channel B1: AUTO
DRAM CLK Skew on Channel B2: AUTO
DRAM Timing Control: Manual
1st Information :
CAS# Latency: 5
DRAM RAS# to CAS# Delay:5
DRAM RAS# Precharge: 5
DRAM RAS# Activate to Precharge:15
RAS# to RAS# Delay : AUTO
Row Refresh Cycle Time: AUTO
Write Recovery Time: AUTO
Read to Precharge Time: AUTO
2nd Information :
READ to WRITE Delay (S/D): AUTO
Write to Read Delay (S): AUTO
WRITE to READ Delay (D): AUTO
READ to READ Delay (S): AUTO
READ to READ Delay (D): AUTO
WRITE to WRITE Delay (S): AUTO
WRITE to WRITE Delay (D): AUTO
3rd Information :
WRITE to PRE Delay: AUTO
READ to PRE Delay: AUTO
PRE to PRE Delay: AUTO
ALL PRE to ACT Delay: AUTO
ALL PRE to REF Delay: AUTO
DRAM Static Read Control: AUTO
DRAM Read Training: AUTO
MEM. OC Charger: AUTO
AI Clock Twister: AUTO
AI Transaction Booster: Manual
Performance Level : 8
Everything Disabled
4th Information :
CPU Voltage: 1.33125
CPU GTL Voltage Reference (0/2): .630
CPU GTL Voltage Reference (1/3): .670
CPU PLL Voltage: 1.54
FSB Termination Voltage: auto
DRAM Voltage: 2.10
NB Voltage: 1.26
NB GTL Reference: AUTO
SBridge Voltage: auto
PCIE SATA Voltage: auto
Load Line Calibration: Enabled : Seemed to really help lower voltages and stabilize things in windows. Had to run over 1.375 in bios with this off because of V droop.
CPU Spread Spectrum: disabled
PCIE Spread Spectrum: disabled
CPU Clock Skew : Auto
NB Clock Skew : Auto
CPU Margin Enhancement: Performance Level
here are my results on my DFI P45-T2RS PLUS 10/03/08, E8400 CO With TRUE120, G.Skill 4GB Pi 800MHZ
http://img21.imageshack.us/img21/8868/4613mhzzy9.jpg
http://img13.imageshack.us/img13/3121/10316sfs9.jpg
lol i just give him Vcore and i don't care if its too much :D
and 24/7 with ASUS P5Q Pro 1406 on 1.336V (for IBT :down:)
http://img10.imageshack.us/img10/889...ableibtin9.png
and pass 5 hours OCCT on 1.328V.
i see that you are post some bios setting, i can give my too if somebody want.
PakaPaka
Good job with old C0 :up:
tanks.
but the CO stepping is old? the EO stepping is old (?)
CO is the older stepping, overal EO clocks better with lower volts... I hope 1406 bios will give better results mate... I did 500FSB out of the box with an E7400 with the 1406 bios
oh ok i remember it wrong.
yes, i hope so too :)
tank you for all your help.
Wow, you guys are doing some amazing things with these 84/8500 CPUs. I have the C0 8500 and I can barely hit 4Ghz at default voltage on air using the 790Ultra chipset. No matter how many volts I throw at the CPU, I cannot get it stable past 4Ghz. I have the Corsair 1800Mhz DDR3 too so I do not know what my problems are.
Quote:
Originally Posted by PakaPaka
Wow that certainly is alot of proof that you got her up to 4 Ghz, bios settings will certainly help, thx.
Well, I got myself an E8400 E0 Q842A247 from my local Micro Center. A search on it turns up nothing. Not sure if this is a good OCing batch or not.
for the 4613mhz i don't have the settings, but for the 4054mhz stable 24/7 i do.Quote:
Originally Posted by vrdublu
those are the setting:
Ai Overclock Tuner : Manual
CPU Ratio Setting : 9
FSB Frequency : 450
PCIE Frequency: 100
FSB Strap to North Bridge : Auto
DRAM Frequency: 901MHZ
DRAM Timing Control: 5-5-5-15
DRAM Static Read Control: Disabled
Dram Read Training : Disabled
MEM OC Charger : Disabled
Ai Clock Twister : Auto
Ai Transaction Booster : Auto
CPU Voltage : 1.3500V in bios, 1.366V at load, 1.328V at idle.
CPU GTL Reference: Auto
CPU PLL Voltage : 1.52
FSB Termination Voltage: 1.26
DRAM Voltage : 2.10
NB Voltage : Auto
PCIE Sata Voltage: Auto
Load Line Calabration : Enabled
CPU Sread Spectrum : Disabled
PCIE Spread Spectrum : Disabled
CPU Clock Skew: Auto
its for IBT 5 run 100% stable, at OCCT pass 5 hours with Vcore 1.328V at load.
Thx that's pretty good OC I think. My E8500 is very close to that @ 4.34 with 1.3125V bios and 1.304 in Windows. All other settings are almost identical as yours. What sort of Temps are you getting ?? I'm on water and apparently I hit 54 C, not likely but that what core temp says. Have you tried a higher fsb ??? I could really use some settings for that if you have those available. If anyone else has some useful information please suggest away.:up:Quote:
Originally Posted by PakaPaka