I HAD no idea how to overclock my E6400 - but now I do!

MichaelD

Lifer
Jan 16, 2001
31,528
3
76
*edit 12 Nov*

First; a big THANK YOU to those that offered advice. :beer::)

Well, despite the fact that my AC Freezer 7 isn't here yet, I decided to go for it. I hard set the memory mult to 2, changed FSB to 400 and left all the voltage control settings on AUTO.

Booted up at 3.2GHz right off the bat, no issues. Note the CPU voltage is 1.40 and the memory at 2.1; the MB did that all by itself...NICE~! I like not having to clear the CMOS 142 times to boost voltage by .00001v every time it fails to boot. I don't understand why my memory is now overvolted from the stock 1.9v? It was running at 200MHz before and it's running at 200MHz now. :confused: Can someone explain that, please?


Notice my temps though! :shocked: This is at idle!

OC_at_idle.jpg

Also note the discrepancy in reported temps b/t the Intel TAT and the EasyTune proggy. I tend to believe the Intel proggy, even though it says I have a Pentium M. I know it's reading the die temp and not the socket temp.

I'm going to try a run of 3DM05 and see what happens. I did run SuperPi 1M; 18 seconds. Not bad. I ran SANDRA's CPU/Memory/Multi Med benchies (what a diff in scores!) and they all passed. I'm AFRAID to try Priming with the stock cooler! I will run 3DM though. :evil:

3DM ran fine!! Less than a 100 point increase in score though, which is puzzling. I know 3DM is GPU-bound, but uh, a 50% CPU speed increase should be worth more though.

My freakin' CPU temp was 68C! upon completion of 3DM though. I hope my AC Freezer comes tomorrow!

I rebooted a couple of times, both cold and warm boot and no probs at all. Super.

3DM ran and so did SANDRA and SuperPI, but 12 hours of P95 is the ultimate stability test. I can't try it with the stock cooler though. At stock CPU speeds, my P95 stress temp would go up 20C...no way I'm going to try and push 80C through the stock cooler.

I will, however, play some Oblivion and FEAR and see what happens.

Just played about an hour of FEAR. The difference in performance was VERY noticeable! It smooth as buttah. :D No hiccups of any kind. CPU temp was 65C when I exited the game, though. That is way too hot. The air coming out of my case was hot as well...that's a first for this system.

Assuming that I can pass 12 hours (or more) of P95 once I get my AC Freezer, I will lower the CPU voltage little by little.

Unless there's really no harm in running at 1.42v 24/7? It's only .1 volts over stock, but these newer CPUs are really sensitive to voltage. Thoughts?



_____________________________________________________________________
I used to be a really good overclocker back in the P3/P4/AthlonXP days. It was simple then. Now there are so many bios settings, I'm not sure where to start.

I have a full grasp of the basics; CPU voltage vs. temps, stability, PCI/PCI-E speeds, etc. I just need a place to start with this new fangled stuff! :eek:

Here's what I've got.

Gigabyte DS3 (F7 Bios)
2 x 1GB Corsair PC6400 (I know it's not the best stuff)
E6400 (code on CPU is L629A728. The box says Pack date 22 August, the Version# is D6329-001.)
Stock cooler for now, using AS5, but AC Freezer 7 Pro should be here in a few days!
Antec Trupower 2.0 550.

Where do I start? I don't want a massive overclock just to run benchies; I want STABLE. I get confused b/c my memory is running at 200MHz, but the CPU is running at 266FSB. What do I set everything at? Do I just raise the CPU FSB to 333 or 400? (I like nice, normal dividers), and leave everything else (PCI/E) alone?

Any help would be greatly appreciated! Thanks much. :beer:
 

MichaelD

Lifer
Jan 16, 2001
31,528
3
76
Thanks, QuyenN. That's a great start for me. :)

I don't want to run max voltage; is there any disadvantage with running 333FSB instead of 400?
 

MichaelD

Lifer
Jan 16, 2001
31,528
3
76
Well...that thread was a little help, but not much. Basically it's just a "Here's how I got 3.2GHz like blam!" thread.

I'm looking for more of a "start here for your basic C2D overclocking needs" type answer.

Please. :D
 

Kwint Sommer

Senior member
Jul 28, 2006
612
0
0
Originally posted by: MichaelD
is there any disadvantage with running 333FSB instead of 400?

You obtain your CPU frequency by multiplying the FSB and the Multiplier (guess where the name comes from). For an E6400 the stock Multiplier is 8 so if you keep that constant 333*8 would be 2.66GHz and 400*8 would be 3.20GHz. Thus the advantage is most importantly a .54GHz increase, the RAM will also run at a faster frequency but that is less significant.
 

MichaelD

Lifer
Jan 16, 2001
31,528
3
76
Thanks Kwint Sommer and N7, I appreciate the help.

What confuses me is that unlike the CPUs of old where you had Multi x FSB = CPU freq, these days you have Multi, FSB, Memory speed and I'm not sure how they interact. :confused:

Right now, my RAM is running at 200MHz, which is what it's spec'd for (PC6400). If I raise the FSB to 400, how does that affect my memory...I am clicking your linked thread now, N7.
 

Marmion

Member
Dec 1, 2005
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In the BIOS main screen hit ctrl+F1, this will bring up 'advanced' options. In the MIB tweaker section, set the memory multi to 2.0 to start off with and try setting FSB at 400. Automatically your ram will be running at DDR2-800 (400Mhz), which will be stock for your ram. Most likely you won't need to change any voltages, I'm running my E6300 at 3.2Ghz with an actual voltage of 1.25v which is undervolted from stock 1.32v, idling at 29/30C using EasyTune and stock fan @ full speed (which I can't hear over my 'noisy' case fan :))
You may also want to disable all the Intel speedstep/thermal stuff to increase stability with your overclock if it isn't stable with it on.
Good luck!
 

Duvie

Elite Member
Feb 5, 2001
16,215
0
71
Originally posted by: n7
Gigabyte seems to like making their bioses ridiculously cryptic, so i'd suggest reading thru here for some ideas:
http://www.xtremesystems.org/forums/showthread.php?t=109719

Also, maybe PM Markfw900, as he has a DS3 & seems to have no trouble getting it to OC well.

Mark has the S3 bios but it is remarkably similar....



Michael I have the DS3...

ONe secret is once you are in the bios hit CTRL-F1 to unlock memory timing settings....


I would really start out running 7x400...drop multi...set ram to cas 5-5-5-15 for safety..bump up vdimm +.1-+.2...board seems to undervolt slightly even at stock..

Bump MCH overvoltage +.1v
Bump FSB voltage +.1v

Set ram to 2x (not auto as sometimes it acts funky in my experience)...

Leave vcore alone for now....


Boot up and test it...pretty simple 2.8ghz OC....

NOw if you want to go higher I would raise the mulit up to 8x again and go from 8x250 up at 10fsb intervals....until you get tyo 8x400 where same settings as above excpet now you may need to bump vcore up to 1.4v set in bios...

Good luck...
 

MichaelD

Lifer
Jan 16, 2001
31,528
3
76
Thanks Marmion and DUVIE for the detailed replies! That's exactly what I was looking for. I wish my AC Freezer 7 was here...I'll probably try it w/the stock HSF just for the heck of it. I doubt I'll hurt anything. Thanks again. :thumbsup:
 

n7

Elite Member
Jan 4, 2004
21,281
4
81
Very nice.
You may be able to lower vcore a bit, which helps a lot for temps, especially with a stock cooler :p
 

imaheadcase

Diamond Member
May 9, 2005
3,850
7
76
I don't get this, so many people give me different answers what is a "ok" CPU temp for core 2 duo under load? Some say 60c some say 70c tops.

Cause under load with NO OC my CPU with intel stock HSF is around 55c under load (using AS5). 1.68ghz CPU at 55c under load?? (thats even with side panel off case, it jumps 5c with it on)

I over clocked to 2.4ghz and it was 70c just in windows not under load! I don't know whats going on, I guess i just need a better HSF/case (have a old INWIN Q500 tower case with fan in front one in back + PS fan blowing out).

What gets me is i can OC to 3ghz without having to change any ram timings, just temps jump to high fast. lol
 

MichaelD

Lifer
Jan 16, 2001
31,528
3
76
Imaheadcase: Your temps are WAY too high! E6300, no OC and 55C idle? Something is wrong.

I think your HS isn't seated properly. Even with so-so airflow through the case, you shouldn't be anywhere near 55C at idle.

I would remove the HS, remove all traces of the stock thermal pad from the HS and the CPU (make sure to do a final cleaning with a papertowel with rubbing alcohol on it) and use some AS5!

N7 Yeah, lowering the Vcore is my plan once I get my AC Freezer (hopefully Mr. Mailman delivers it tomorrow) and move the system over to my new P180. No doubt the 1.42 vcore is adding to my temps. A few days of messing w/P95 and lowering the VCore step by step and hopefully I'll be at the same speed with a lower voltage.
 

imaheadcase

Diamond Member
May 9, 2005
3,850
7
76
MichaelD reading is fundamental before you post :)
"Cause under load with NO OC my CPU with intel stock HSF is around 55c under load (using AS5). 1.68ghz CPU at 55c under load??" :p


Let me know how your AC freezer works, its cheap enough I might just get one. Because I can't overclock at all wtihout temps shooting up fast as it is. I don't know how people can over clock any with Stock HSF.
 

Duvie

Elite Member
Feb 5, 2001
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71
Originally posted by: imaheadcase
MichaelD reading is fundamental before you post :)
"Cause under load with NO OC my CPU with intel stock HSF is around 55c under load (using AS5). 1.68ghz CPU at 55c under load??" :p


Let me know how your AC freezer works, its cheap enough I might just get one. Because I can't overclock at all wtihout temps shooting up fast as it is. I don't know how people can over clock any with Stock HSF.

smartarse!!!

It is a 1.86ghz cpu anyways...get that right!!!!

I got better then that with the stock cooler....What are your room temps like? How about case cooling? Got any?
 

imaheadcase

Diamond Member
May 9, 2005
3,850
7
76
Room temps are around 77 (normal), got fan in front (blowing in), 1 in back plus power supply fan blowing out.

 

Duvie

Elite Member
Feb 5, 2001
16,215
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71
Originally posted by: imaheadcase
Room temps are around 77 (normal), got fan in front (blowing in), 1 in back plus power supply fan blowing out.



i would say considering I have room temps around 76f and I am overvolting my E6300 to 1.4625v and at 3.4ghz and under dual Orthos I hit 62c full....

Running 2 instances of F@H I only hit 47-48c

My E6600 at 1.45v and 3.26ghz I hit 62c as well in dual orthos (cache makes it hotter) and under 2 instances of F@H I only hit 47-48c as well....


What HSF are you running? Size of fan and rpm speed?

My buddies E6300 @2.4ghz and default vcore with stock cooler never went over 52c under dual orthos...F@H only took it to 43-44c
 

imaheadcase

Diamond Member
May 9, 2005
3,850
7
76
This conversation could be less if you read original post, 3rd time now your question was in it :p

"Cause under load with NO OC my CPU with intel stock HSF is around 55c under load (using AS5)."

Stock HSF like i mentioned. Fan is set in bios to run at full speed all the time.
CPU is a week 29 one if that matters.
 

Duvie

Elite Member
Feb 5, 2001
16,215
0
71
Originally posted by: imaheadcase
This conversation could be less if you read original post, 3rd time now your question was in it :p

"Cause under load with NO OC my CPU with intel stock HSF is around 55c under load (using AS5)."

Stock HSF like i mentioned. Fan is set in bios to run at full speed all the time.
CPU is a week 29 one if that matters.


well the answer was still given to you....

Look at my stock hsf used on E6300...still cooler then yours, but not by much. I am running 533mhz more but the sonata 2 case is really nice with its use of ducts.....I guess you also used the stock TIM pad that came attached to the bottom of the hsf? may want to try something else
 

imaheadcase

Diamond Member
May 9, 2005
3,850
7
76
Duvie im amazed. Simply amazed..did you read OP? lol

"Cause under load with NO OC my CPU with intel stock HSF is around 55c under load (using AS5)."

AS5 = artic silver 5.