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
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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).